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Journal articles on the topic 'Strain deformation effect'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Kawulok, Rostislav, Ivo Schindler, Jaroslav Sojka, et al. "Effect of Strain on Transformation Diagrams of 100Cr6 Steel." Crystals 10, no. 4 (2020): 326. http://dx.doi.org/10.3390/cryst10040326.

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Based on dilatometric tests, the effect of various values of previous deformation on the kinetics of austenite transformations during the cooling of 100Cr6 steel has been studied. Dilatometric tests have been performed with the use of the optical dilatometric module of the plastometer Gleeble 3800. The obtained results were compared to metallographic analyses and hardness measurements HV30. Uniaxial compression deformations were chosen as follows: 0, 0.35, and 1; note that these are true (logarithmic) deformations. The highly important finding was the absence of bainite. In addition, it has be

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2

Tsai, M. Y., C. H. Huang, and C. Y. Huang. "Hygrothermal Effect on Deformations of QFN Electronic Packaging." Journal of Mechanics 22, no. 4 (2006): 271–79. http://dx.doi.org/10.1017/s1727719100000927.

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AbstractThe hygrothermal-mechanical behavior of a quad flat non-lead (QFN) package without a chip inside is investigated experimentally and numerically. The present study is focused on understanding the effect of the inherent hygrothermal behaviors of epoxy molding compound (EMC) on the deformations of QFN package. Prior to studying the package, the coefficient of moisture expansion for the EMC is measured experimentally. Full-field moiré and Twyman-Green interferometries are used for measuring the real-time in-plane and out-of-plane deformations of the specimen, respectively, under thermal an

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3

Wu, C. L., Z. R. Wang, and Wen Zhang. "Research of Formation Mechanics on Nanostructured Chips by Multi-Deformations Based on Finite Element Method." Advanced Materials Research 989-994 (July 2014): 352–55. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.352.

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Formation of chip is a typical severe plastic deformation progress in machining which is only single deformation stage. The rake angle of tool is governing parameter to create large strain imposed in the chip. Effect of rake angle and deformation times on effective strain, mean strain, strain variety and strain rate imposed in the chip are researched respectively. The result of simulation have shown that the chip with large strain and better uniform of strain along the longitudinal section of chip can be produced with negative rake angle at some lower cutting velocity by multi-deformations in

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4

Wang, H. L., Xiu Xi Wang, and H. Y. Liang. "Molecular Dynamics Simulation and Analysis on the Stress Induced Crystallization Behavior of Metallic Glass Cu." Solid State Phenomena 121-123 (March 2007): 1011–16. http://dx.doi.org/10.4028/www.scientific.net/ssp.121-123.1011.

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The compressive deformation of metallic glass Cu was studied under uniformly distributed strains with different rates at 1 K temperature using molecular dynamics simulations. The interaction between atoms in the system adopts the embedded atom method (EAM) reported by Mishin. We found that MG Cu is an elastic/perfect plastic material and the Young modulus is about 50 Gpa with strain rates from 0.1ns-1 to 10 ns-1. At low strain rates the sample deforms inhomogeneously and the amorphous phase transforms continuously to a crystalline phase. It was observed that the nucleation, growth and mergence

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5

Higginson, R. L. "The Effect of Strain and Strain Path during Deformation on the Recrystallisation of a Particle Containing Aluminum-Manganese Alloy." Materials Science Forum 550 (July 2007): 363–68. http://dx.doi.org/10.4028/www.scientific.net/msf.550.363.

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The effect of strain path on an aluminium-manganese alloy has been studied using single pass rolling and simple compression tests. Strain paths of 0, 90 and180° have been studied in terms of texture development and recrystallisation behaviour and compared with equivalent positions in the rolled slab. The effects of the individual deformations on the dislocation sub-structure have been studied using transmission electron microscopy. The study has shown that although samples can be deformed to the same strain via nominally the same stain path change the deformation mode can fundamentally influen

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6

Dolzhenko, Anastasiia, Marina Tikhonova, Rustam Kaibyshev, and Andrey Belyakov. "Microstructures and Mechanical Properties of Steels and Alloys Subjected to Large-Strain Cold-to-Warm Deformation." Metals 12, no. 3 (2022): 454. http://dx.doi.org/10.3390/met12030454.

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The effect of large-strain cold-to-warm deformation on the microstructures and mechanical properties of various steels and alloys is critically reviewed. The review is mainly focused on the microstructure evolution, whereas the deformation textures are cursorily considered without detailed examination. The deformation microstructures are considered in a wide strain range, from early straining to severe deformations. Such an approach offers a clearer view of how the deformation mechanisms affect the structural changes leading to the final microstructures evolved in large strains. The general re

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7

Miao, Cheng Liang, Guo Dong Zhang, and Cheng Jia Shang. "Effect of Nb Content on Hot Flow Stress, Dynamic Recrystallization and Strain Accumulation Behaviors in Low Carbon Bainitic Steel." Materials Science Forum 654-656 (June 2010): 62–65. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.62.

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Compressive deformation behaviors of low carbon steels with different Nb contents were investigated in the temperature range 900oC to 1100oC and strain rates from 0.05s-1 to 2s-1 by single pass deformation. Multi-pass compressive deformation processes were also carried out to examine strain accumulation under different Nb contents. In single pass deformations, dynamic recrystallization (DRX) can be observed in the case of low strain rate and high temperature, and the higher Nb steel exhibits higher deformation activation energy (Qdef) and critical strain value (εc) for the onset of DRX. Howeve

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8

de Melo Pereira, Alexandre, Marcelo Costa Cardoso, and Luciano Pessanha Moreira. "Effects of Strain-Rate and Deformation Mode on Strain-Induced Martensite Transformation of AISI 304L Steel Sheet." Applied Mechanics and Materials 835 (May 2016): 216–21. http://dx.doi.org/10.4028/www.scientific.net/amm.835.216.

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Metastable austenitic stainless steels are prone to strain-induced martensitic transformation (SIMT) during deformation at room temperature, as in the case of sheet metal forming processes. SIMT is influenced by chemical composition, grain size, temperature, deformation mode or stress state and strain-rate effects. In this work, uniaxial and plane-strain tension tests were performed in AISI 304L sheet to evaluate the SIMT as a function of strain-rate. Feritscope and temperature in-situ measurements were performed during the uniaxial tensile testing. Digital image correlation (DIC) technique wa

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9

Huang, Shaoping, Yuanhai Yang, Henglin Xiao, et al. "Effect of Loading Direction on Deformation and Strength of Heterogeneous Paleo Clay Samples." Sustainability 15, no. 22 (2023): 15852. http://dx.doi.org/10.3390/su152215852.

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Landslides result from weak surfaces with varying rock-soil properties, posing a significant concern for engineering and accurate deformation analysis. This study investigated the macroscopic physical and mechanical properties of paleo clay specimens during triaxial compression testing, aiming to elucidate the deformation mechanisms exhibited by these specimens under varying loading directions at both the loading and unloading ends, and numerical simulation methods were carried out to simulate actual engineering scenarios. The analysis encompasses deformation patterns, stress–strain relationsh

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10

Gautam, Sachin, and Ravindra Saxena. "A finite element study on effect of frictional heating in the taylor rod impact problem." World Journal of Engineering 11, no. 6 (2014): 529–42. http://dx.doi.org/10.1260/1708-5284.11.6.529.

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In an impact phenomenon the material is subjected to very short duration high force levels resulting large plastic deformations and rise in temperature at high strain rates. A circular rod impacting against a rigid surface called as Taylor rod impact test is widely used for determining the mechanical behaviour of materials subjected to high strain rates with associated increase in temperature. A three-dimensional large deformation, thermo-elasto-plastic, dynamic, contact, finite element formulation is developed to study the effect of temperature rise due to plastic deformation and surface fric

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11

Fan, Beibei, and Maozhi Li. "Effect of Strain Rate on Mechanical Deformation Behavior in CuZr Metallic Glass." Materials 17, no. 11 (2024): 2507. http://dx.doi.org/10.3390/ma17112507.

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Tensile tests were performed on Cu64Zr36 metallic glass at strain rates of 107/s, 108/s, and 109/s via classical molecular dynamics simulations to explore the underlying mechanism by which strain rate affects deformation behavior. It was found that strain rate has a great impact on the deformation behavior of metallic glass. The higher the strain rate is, the larger the yield strength. We also found that the strain rate changes the atomic structure evolution during deformation, but that the difference in the atomic structure evolution induced by different strain rates is not significant. Howev

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12

Yang, Qiuyue, Min Ma, Yuanbiao Tan, Song Xiang, Fei Zhao та Yilong Liang. "Initial β Grain Size Effect on High-Temperature Flow Behavior of Tb8 Titanium Alloys in Single β Phase Field". Metals 9, № 8 (2019): 891. http://dx.doi.org/10.3390/met9080891.

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The high-temperature flow behavior of TB8 titanium alloys with two different grain sizes was investigated in this present work. Results show that a significant characteristic of stress drop is visible at the start stage of the hot deformation process when the strain rates are 100 and 10−1 s−1. With the further increasing of strain, the flow stress initially rises to a maximum value and subsequently attains a plateau for the strain rates of 100 s−1 and a slight decrease for the strain rates of 10−1 s−1. Only dynamic recovery occurs under these deformation conditions. When the strain rates drop

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13

Plugin, Andrii, Artem Iefimenko, Olga Borziak, Edwin Gevorkyan, and Olena Kaliuzhna. "Effect of mineral additives to a gypsum wet deformation." E3S Web of Conferences 280 (2021): 07003. http://dx.doi.org/10.1051/e3sconf/202128007003.

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The influence of mineral additive, i.e. ground granulated blast-furnace slag on artificial gypsum stone humidity strains has been studied. The slag content was varied in the range from 0 to 0.33 by weight based on the total amount of the mixture. The measurements were carried out on prism samples with dimensions of 160x40x40 mm. The samples were placed vertically in containers with water, the deformations were measured using dial indicators. It was established that the humidity strain value depends on the content of the granulated milled blastfurnace slag. A maximum strain of over 0.001 m/m is

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14

Селютина, Н. С., та Ю. В. Петров. "Моделирование временных эффектов необратимого деформирования на основе релаксационной модели пластичности". Физика твердого тела 61, № 6 (2019): 1015. http://dx.doi.org/10.21883/ftt.2019.06.47673.238.

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The analysis of plastic deformation of metals and polymethylmethacrylate under dynamic loading is carried out using a relaxation model of plastic deformation. The invariance of the parameters of the relaxation model of plasticity to the strain history allows us to obtain any set of deformation curves from a united viewpoint, both monotonic, with varying yield strength, and non-monotonic, with emerging and varying yield drop, as it is observed in experiments. The increase of the yield strength of high-strength 2.3Ni-1.3Cr steel together with the hardening effect both under high-rate and slow de

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15

Wang, X. B. "Temperature-Dependent Shear Strain Localization of Aluminium-Lithium Alloy in Uniaxial Compression Using Zerilli-Armstrong and Gradient Plasticity Models." Materials Science Forum 519-521 (July 2006): 789–94. http://dx.doi.org/10.4028/www.scientific.net/msf.519-521.789.

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Gradient-dependent plasticity where a characteristic length is involved to consider the microstructural effect (interactions and interplaying among microstructures due to the heterogeneous texture) is introduced into Zerilli-Armstrong model based on the framework of thermally activated dislocation motion. Effect of initial temperature on the distributions of plastic shear strain and deformation in adiabatic shear band (ASB), the axial compressive stress-axial compressive strain curve, the shear stress-average plastic shear strain in ASB curve and the plastic shear strain corresponding to the o

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16

Sakharova, Nataliya A., Milena M. Vieira, José Valdemar Fernandes, and Manuel F. Vieira. "Strain Path Change Effect on Deformation Behaviour of Materials with Low-to-Moderate Stacking Fault Energy." Materials Science Forum 587-588 (June 2008): 420–24. http://dx.doi.org/10.4028/www.scientific.net/msf.587-588.420.

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Stacking fault energy (SFE) plays an important role in face centred cubic (f.c.c.) metals and alloys in determining the prevailing mechanisms of plastic deformation. Low SFE metals and alloys have a tendency to develop mechanical twinning, besides dislocation slip, during plastic deformations. Deformation behaviour and microstructure evolution under simple and complex strain paths were studied in 70/30 brass, with small and intermediate grain sizes, which corresponds to a f.c.c. material with low SFE. Simple (rolling and tension) and complex (tension normal to previous rolling) strain paths we

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17

Cleja-Ţigoiu, Sanda, and Victor Ţigoiu. "Strain Gradient Effect in Finite Elasto-plastic Damaged Materials." International Journal of Damage Mechanics 20, no. 4 (2010): 484–514. http://dx.doi.org/10.1177/1056789510386816.

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In this article we propose a strain gradient model for elasto-plastic materials in which there exist zones with structural inhomogeneities, characterized by nonlocal deformations. We assume the existence of an anholonomic configuration, called damaged configuration, which is associated with the second-order plastic deformation. We proved how the damage may be coupled to the second-order plasticity introducing a tensorial damage variable, Qd, as a measure of the nonmetricity of the plastic Bilby-type part of the connection, which characterizes peculiar structural defects. The constitutive and e

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18

Butler, James P., Hiroshi Miki, Stephanie Squarcia, Rick A. Rogers, and John L. Lehr. "Effect of macroscopic deformation on lung microstructure." Journal of Applied Physiology 81, no. 4 (1996): 1792–99. http://dx.doi.org/10.1152/jappl.1996.81.4.1792.

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Butler, James P., Hiroshi Miki, Stephanie Squarcia, Rick A. Rogers, and John L. Lehr. Effect of macroscopic deformation on lung microstructure. J. Appl. Physiol.81(4): 1792–1799, 1996.—Using an anisotropic theory of diffuse light scattering in lungs, we measured the fractional changes in geometric mean linear intercepts in orthogonal directions when freshly excised rabbit lungs were subjected to isovolume uniaxial strains. Results from the optical technique were compared with morphometric estimates of fractional changes in mean linear intercepts from the same strained and unstrained (control)

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19

Achenbach, J. D., and N. Nishimura. "Effect of Inertia on Finite Near-Tip Deformation for Fast Mode-III Crack Growth." Journal of Applied Mechanics 52, no. 2 (1985): 281–86. http://dx.doi.org/10.1115/1.3169041.

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The combined effects of finite deformation and material inertia have been analyzed for fast crack growth under antiplane loading conditions. A steady-state dynamic solution has been obtained for the finite strain on the crack line, from the moving crack tip to the moving transition boundary with the zone of small strains. The crack propagates in a material with a response curve in uniform shear that is linear at small strains, and which remains constant once a critical strain has been exceeded. The corresponding quasi-static solution is given in the full zone of large deformation. For the dyna

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20

Zhang, Qing Ping, and Zhi Geng Fan. "Large Deformations of Low Density Open-Cell Elastomeric Foams: Kelvin Model Study." Applied Mechanics and Materials 117-119 (October 2011): 550–55. http://dx.doi.org/10.4028/www.scientific.net/amm.117-119.550.

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Based on Kelvin model, the large deformations of elastomeric foams were simulated by finite element method (FEM). Numerical results indicated that edge bending, edge stretching and edge torsion were important deformation mechanisms of low density open-cell Kelvin foam. The hyperelasticity of the cell material had little effect on the macro-mechanical properties of the foam at low strain in [111] direction and finite compressive strain in [100] direction when edge bending was the main deformation mechanism of the foams. With the increase of the uniaxial tensile strain, edge stretching played no

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21

Park, Taehyo, and G. Z. Voyiadjis. "Kinematic Description of Damage." Journal of Applied Mechanics 65, no. 1 (1998): 93–98. http://dx.doi.org/10.1115/1.2789052.

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In this paper the kinematics of damage for finite elastic deformations is introduced using the fourth-order damage effect tensor through the concept of the effective stress within the framework of continuum damage mechanics. However, the absence of the kinematic description of damage deformation leads one to adopt one of the following two different hypotheses. One uses either the hypothesis of strain equivalence or the hypothesis of energy equivalence in order to characterize the damage of the material. The proposed approach in this work provides a relation between the effective strain and the

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22

Rajput, Ashutosh, and Surajit Kumar Paul. "Effect of void in deformation and damage mechanism of single crystal copper: a molecular dynamics study." Modelling and Simulation in Materials Science and Engineering 29, no. 8 (2021): 085013. http://dx.doi.org/10.1088/1361-651x/ac3051.

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Abstract The current study investigates the deformation and damage mechanism of single crystal copper in the presence of a void located at the copper cell center. Tensile and compressive deformations are conducted in two loading modes, uniaxial and triaxial. Alteration in mechanical properties is observed due to the presence of void in different deformation modes. In uniaxial deformation, a smooth gradient in stress and strain distribution are evident before dislocation nucleation, i.e. in the elastic domain. However, inhomogeneity in stress and strain distribution are noted during the plastic

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23

Lam, D. C. C., and A. C. M. Chong. "Characterization and modeling of specific strain gradient modulus of epoxy." Journal of Materials Research 16, no. 2 (2001): 558–63. http://dx.doi.org/10.1557/jmr.2001.0080.

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Microscale sensing and actuating components are prevalent in microelectromechanical systems. Deformations of microscale components are dependent not only on the strains in the body, but also on the strain gradients. The contribution of strain gradients to plastic hardening is characterized by the specific strain gradient modulus of the material. The specific strain gradient modulus has been predicted to vary with the plastic strain. The moduli of plastically prestrained epoxy specimens were experimentally characterized in this investigation using nanoindentation. Prestraining induced softening

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24

Gertsriken, D. S. "Effect of an Impulse Loading on Localization of Diffusing Atoms in Metals." Defect and Diffusion Forum 277 (April 2008): 91–97. http://dx.doi.org/10.4028/www.scientific.net/ddf.277.91.

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Distribution and mobility of own and impurity atoms in metals subjected to different loadings: quasi-static plastic strains; quasi-static deformations in combination with impulse; sluggish and fast elastic deformations, including alternating, impulse plastic strains are investigated by methods of an autoradiography, layer-by-layer radiometric analysis and secondary ionic mass spectrometry. The common regularities of migration of atoms at deformation of metals are found, and threshold values of a strain rate, corresponding to change of the diffusion mechanism and localization of penetrating ato

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25

Ren, An Chao, Yu Ji, Gui Feng Zhou, and Ze Xi Yuan. "Effect of Deformation Temperation on Dynamic Recrystallization Behavior for High-Carbon Steel." Advanced Materials Research 199-200 (February 2011): 1880–84. http://dx.doi.org/10.4028/www.scientific.net/amr.199-200.1880.

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Isothermal constant strain rate compression tests on high-carbon steel are carried out under deformation temperation of 850°C, 950°C, 1050°C、1150°C and 1250°C respectively and deformation of 0.7 using the THERMECMASTOR-Z thermal simulator at a strain rate of 1s-1. The austenite grain morphology before and after deformation and the true stress-strain curves during the deformation process are analyzed. The experimental results show that increased deformation temperation can obviously contribute to the grain refinement. And under the same strain rate conditions, as the deformation temperation ris

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26

Stepanova, L. N., A. N. Kurbatov, S. I. Kabanov, S. A. Beher, V. V. Chernova, and E. S. Terekhova. "RESEARCH OF THE POSSIBILITY OF COMPLEX APPLICATION OF ACOUSTIC EMISSION METHODS, TENSOMETRY AND EFFECT OF ACOUSTOELASTICITY FOR CONTROL OF CARBON PLASTIC RESTRICTS UNDER STATIC LOADING." Kontrol'. Diagnostika, no. 319 (January 2025): 13–25. https://doi.org/10.14489/td.2025.01.pp.013-025.

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The article presents results of studying the process of destruction of carbon fiber reinforced plastic samples under static tension. To control defects, strain gauge, acoustoelasticity effect and acoustic emission method were used. The possibility and advantages of using the acoustoelasticity method for determining deformations in a composite material are shown. The relationship between the deformation of carbon fiber and the time parameters of Lamb waves measured by the ultrasonic system "Acoustic-1" is established. The reliability of defect location is ensured by the acoustic emission method

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27

Tashkinov, A. A., and V. E. Shavshukov. "Elastoplastic interaction of grains in polycrystalline materials." PNRPU Mechanics Bulletin, no. 4 (December 15, 2019): 175–90. http://dx.doi.org/10.15593/perm.mech/2019.4.17.

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A new method is developed for solving boundary value problems of elastoplastic deformation of polycrystalline materials based on the field-theoretical approach. The boundary value problem for inhomogeneous global strain fields in differential form is transformed into a system of integral equations for mesostrain tensors in grains. In this approach, strain at any point of any grain represented as a superposition of homogeneous macrostrain and contributions of interactions with strain in given grain and all another grains of polycrystalline body . It is shown that the effects of the interaction

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28

Kaibyshev, R., and V. Kazyhanov. "Texture and Microstructure Evolution During Superplasticity of the Metal Matrix Composite PM 2014 Al–20% Al2O3." Textures and Microstructures 32, no. 1-4 (1999): 83–99. http://dx.doi.org/10.1155/tsm.32.83.

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The effects of superplastic deformation (SPD) on grain structure and texture evolution of the Al 2014–20%Al2O3 composite produced via powder metallurgical method were investigated in conjunction with surface relief observations. Samples were deformed in tension at different strains in the range of true strain rates 10-4–100 S-1 at temperature 500C. It was found that SPD strains have a large effect on both texture and grain size. At the initial stage of superplastic flow, deformation bands are formed in the aluminum matrix along the tension direction. Simultaneously, the initial 〈111〉 fiber tex

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29

Wu, Taowen, Ning Wang, Minghe Chen, Dunwen Zuo, Lansheng Xie, and Wenxiang Shi. "Effect of Pre-Strain on Microstructure and Tensile Properties of Ti-6Al-4V at Elevated Temperature." Metals 11, no. 8 (2021): 1321. http://dx.doi.org/10.3390/met11081321.

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Research on pre-deformation influences on material properties in multistep hot forming is of important scientific interest. In this paper, hot tensile tests at 850 °C and a strain rate of 0.001 s−1 were performed to study the microstructural evolution and mechanical properties of Ti-6Al-4V with pre-strains at 0.05, 0.1 and 0.15. The tensile test results showed that the specimen with 0.05 pre-strain exhibited higher flow stress and larger elongation. Additionally, increasing the pre-strain resulted in a decrease in ultimate tensile strength (UTS) and elongation (EL). The EBSD results showed tha

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Liu, Shuaiyang, Aiqin Wang, and Jingpei Xie. "Effect of Deformation Temperature, Strain Rate and Strain on the Strain Hardening Exponent of Copper/Aluminum Laminated Composites." Advanced Composites Letters 27, no. 4 (2018): 096369351802700. http://dx.doi.org/10.1177/096369351802700401.

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In order to investigate the strain hardening behaviour of Cu/Al laminated composites, isothermal compression tests were conducted in the temperature range of 300–450 °C and stain rate range of 0.01–1 s−1. Based on the experimental data, stain hardening exponent n was calculated to evaluate the strain hardening ability of Cu/Al laminated composites during the deformation process. The results show that deformation temperature, strain rate, strain and laminated structure are all responsible for the evolution of flow stress during the isothermal compression. The highly non-linear character of Ln σ

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31

Liang, W., and M. Zhou. "Response of copper nanowires in dynamic tensile deformation." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 218, no. 6 (2004): 599–606. http://dx.doi.org/10.1243/095440604774202231.

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Molecular dynamics (MD) simulations with an embedded atom method (EAM) potential are carried out to analyse the size and strain rate effects in the tensile deformation of single-crystal copper nanowires. The cross-sections of the wires are squares with dimensions of between 5 and 20 lattice constants (or 1.8-7.2nm). Deformations under constant strain rates between 1.67 × 107 and 1.67 × 1010s−1 are analysed. It is found that the yield stress decreases with specimen size and increases with loading rate. On the other hand, ductility increases with specimen size and strain rate. The influence of s

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32

Sun, Huasheng, Lingwei Wang, Shenwei Chen, Hengwei Deng, and Jihua Zhang. "A Precise Prediction of Tunnel Deformation Caused by Circular Foundation Pit Excavation." Applied Sciences 9, no. 11 (2019): 2275. http://dx.doi.org/10.3390/app9112275.

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In comparison with tetragonal retaining structures, circular retaining structures have an advantage in terms of controlling the deformation caused by foundation excavation, and are a reasonable choice in engineering practice. Many results have been obtained regarding the effect of tetragonal excavation on the deformation of an adjacent tunnel. Nevertheless, a sufficient understanding of the circular excavation’s effect on the deformation of an adjacent tunnel is currently lacking. Therefore, this study focused on the problem of precise predicting tunnel deformation below a circular excavation.

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Zhu, Baohui, Xiangdong Wu, Min Wan, et al. "Effect of Cold Deformation on Microstructure and Mechanical Behavior of Commercially Pure Grade 4 Titanium Strip." Metals 12, no. 7 (2022): 1166. http://dx.doi.org/10.3390/met12071166.

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The microstructure and mechanical behavior of commercially pure grade 4 (Gr.4) titanium strips with different deformations were studied by optical microscope (OM), scanning electron microscopy (SEM), transmission electron microscopy (TEM), uniaxial tensile test, and hardness test. The work-hardening characteristics of a Gr.4 strip were analyzed with a true-stress–strain curve. The results show that cold deformation can significantly improve the strength and hardness of a commercially pure titanium Gr.4 strip, which has significant work hardening characteristics. With the increase in deformatio

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34

Long, M. J., H. H. Zhang, X. H. Yang, W. Guo, S. Y. Ai, and D. F. Chen. "Study on dynamic recrystallization of ultra-high strength 22MnB5 steel during hot rolling." Journal of Physics: Conference Series 2635, no. 1 (2023): 012022. http://dx.doi.org/10.1088/1742-6596/2635/1/012022.

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Abstract The effect of deformation temperature and strain rate on the recrystallization behavior of ultra-high strength hot formed 22MnB5 steel was systematically studied by isothermal compression experiments, and the microstructure was characterized and analyzed. The results show that the peak stress and peak strain of 22MnB5 steel decrease with increasing deformation temperature and increase with increasing strain rate. The dynamic recrystallization of 22MnB5 steel is more sensitive to temperature and less affected by strain rate. The recrystallization behavior is significant during isotherm

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35

Chen, Yong Nan, Jian Feng Wei, Yong Qing Zhao, and Xue Dan Ma. "Effect of Deformation Parameters on Deformation Behavior of Ti14 Alloy during Semi-Solid Compression." Materials Science Forum 620-622 (April 2009): 287–90. http://dx.doi.org/10.4028/www.scientific.net/msf.620-622.287.

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The effects of the process parameters on the deformation behavior of Ti14 alloy have been investigated by compressive tests, at temperature between 1000°C and 1150°C and with strain rates from 5×10-3 S-1 to 5S-1. The results revealed that deformation temperature and strain rate have significant effect on the peak flow stress, the flow stress decreases. The response time required by deformation was affected by the strain rates and liquid fraction was done by the temperature. At higher temperature, transforms deformation mechanism was changed from sliding between solid particles to flow of liqui

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Yan, Geng, Yanli Lin, Shuo Wang, et al. "Experiment for Measuring Mechanical Properties of High-Strength Steel Sheets under Cyclic Loading by V-Shaped Double-Shear-Zone Specimens." Materials 16, no. 13 (2023): 4645. http://dx.doi.org/10.3390/ma16134645.

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The simple shear test shows significant advantages when measuring the hardening and shear properties of thin sheet metal at large strains. However, previous shear tests had an end effect caused by local stress concentration and a boundary effect caused by deformation overflow, resulting in non-uniform strain distribution in the shear zone. Therefore, a unique V-shaped double-shear-zone specimen is proposed to measure the Bauschinger effect under cyclic shear loading conditions in this paper. Simple shear experiments and three different types of cycle shear experiments are conducted to analyze

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Pereira, António, Fábio Fernandes, and Bruno Filipe. "Effect of Deformation Path on the Microstructure and Mechanical Behavior of TWIP980 Steel." Journal of Manufacturing and Materials Processing 3, no. 1 (2019): 12. http://dx.doi.org/10.3390/jmmp3010012.

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Recent technological advances have made it possible to manufacture steels with both high strength and high ductility. This is the case for Twinning-Induced Plasticity (TWIP) steels which are characterized by a twinning deformation mechanism, which is responsible for its excellent properties. In this work, TWIP980 steel was tested under tensile loading along the rolling direction until pre-deformations of 10%, 20%, and 30% were reached. In order to assess the effect of the deformation path, the pre-deformed samples were reloaded in directions of 0°, 45° and 90° against the rolling direction. Mi

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Zhang, Liping, Genchen Peng, Fan Yang, et al. "Effect of Welding Gap of Thin Plate Butt Welds on Inherent Strain and Welding Deformation of a Large Complex Box Structure." Materials 17, no. 9 (2024): 1934. http://dx.doi.org/10.3390/ma17091934.

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In this study, an effective numerical model was developed for the calculation of the deformation of laser-welded 3 mm 304L stainless steel plates with different gaps (0.2 mm, 0.5 mm, and 1.0 mm). The welding deformation would become larger when the welding gaps increased, and the largest deformation values along the Z direction, of 4 mm, were produced when the gap value was 1.0 mm. A larger plastic strain region was generated in the location near the weld seam, since higher plastic deformation had occurred. In addition, the tensile stress model was also applied at the plastic strain zone and d

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Onovo, Harrison. "DYNAMIC IMPACT RESPONSE OF NANOSIZED PRECIPITATES BEARING WASPALOY." Journal of Engineering Research [TJER] 19, no. 2 (2023): 180–89. http://dx.doi.org/10.53540/tjer.vol19iss2pp180-189.

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Dynamic response of nanosized precipitates bearing (NPB) Waspaloy, a class of superalloy, is crucial to design structural components for critical rotating applications and other severe dynamic impact predisposed applications. The focus of this study is, therefore, to investigate the compressive dynamic behaviour of NPB Waspaloy at a high strain rate under various deformation conditions. The technique of modified split Hopkinson pressure (MSHP) bar was implemented through impact deformation of Waspaloy under wide-ranging deformation temperatures (-180 - 750 oC) and strain rates of (4*103 - 7.5*

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Song, Zhixiang, and Junwen Zhang. "Progressive failure mechanical behaviour and response characteristics of sandstone under stress-seepage coupling." Journal of Geophysics and Engineering 18, no. 2 (2021): 200–218. http://dx.doi.org/10.1093/jge/gxab008.

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Abstract Conventional triaxial loading tests with different confining pressures and stress-seepage coupling tests on sandstone with different confining pressures and seepage pressures were conducted. A permeability model considering strength and strain was established, which better characterized the progressive deformation mechanical behaviour of sandstone under stress-seepage coupling. The results showed the following. (i) The confining pressure not only affects the peak strength of sandstone but also affects the axial deformation under conventional triaxial loading conditions. (ii) Compared

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Sun, Lin, K. Muszka, Bradley P. Wynne, and Eric J. Palmiere. "The Effect of Strain Path Reversal during Austenite Deformation on Phase Transformation in a Microalloyed Steel Subjected to Accelerated Cooling." Materials Science Forum 715-716 (April 2012): 667–72. http://dx.doi.org/10.4028/www.scientific.net/msf.715-716.667.

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In the present study, monotonic and cyclical torsional deformations of an X-70 microalloyed steel were conducted at austenite temperatures below the recrystallisation-stop temperature (T5%). The austenite deformation is followed by accelerated continuous cooling to allow the investigation of the strain reversal effect on the subsequent phase transformation mechanisms. The transformation behaviours were studied by a dilatometry method, and the microstructures of the transformed products have been analysed using electron back scatter diffraction (EBSD). The results of this study shows that altho

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Kundu, Amrita, Claire L. Davis, and Martin Strangwood. "Effect of Strain on Recrystallisation during Hot Deformation of Nb-Containing Microalloyed Steel." Materials Science Forum 715-716 (April 2012): 690–95. http://dx.doi.org/10.4028/www.scientific.net/msf.715-716.690.

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The Dutta-Sellars equations for predicting recrystallisation and precipitation in microalloyed steels have been assessed for accuracy over a range of strain levels (0.15 to 0.45) during hot deformation (975-1075 °C) of a homogenised 0.045 wt % Nb steel. It has been found that the model predicts the deformation state well at a strain of 0.3 whereas at both lower and higher strains i.e. 0.15 and 0.45, the agreement is less good. The differences between prediction and experimental measurement have been related to solute drag and precipitate potential of Nb.

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Sakai, Taku, and Hiromi Miura. "Ultrafine Grain Formation in Aluminum Alloys during Hot Severe Plastic Deformation." Materials Science Forum 706-709 (January 2012): 1829–34. http://dx.doi.org/10.4028/www.scientific.net/msf.706-709.1829.

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The evolution process of ultrafine grains during hot severe plastic deformation (SPD) was studied in several aluminum alloys. The structural changes can be characterized by the evolution of deformation bands such as microshear bands (MSBs) at moderate strains. The process of strain-induced grain formation can be categorized into the three stages irrespective of deformation mode and temperature: i.e. i) an incubation period for new grain evolution in low strain; ii) a grain fragmentation by frequent development of MSBs and subsequently new grains in medium strain, and iii) a full development of

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Wang, Qiang Song, Dong Mei Liu, Guo Liang Xie, Wei Bin Xie, Yang Li, and Xue Cheng Gao. "High Temperature High Strain-Rate Tensile and Compressive Deformation Behaviors of Cu-Zn-Sn-Al Alloy." Materials Science Forum 817 (April 2015): 55–62. http://dx.doi.org/10.4028/www.scientific.net/msf.817.55.

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The present work gives a systematic study on the high temperature and high strain-rate deformation behaviors of a two-phase α/β Cu-Zn-Sn-Al alloy, by combining the split Hopkinson bar experiments and microstructural investigations. The results show that under high strain-rate, both the dislocation slip and deformation twins within the α phase contribute to the plastic strengthening of Cu-Zn-An-Al alloy, resulting in the strain-rate-hardening effect. As the deformation temperature increases, the shapes of the stress-strain curves are mainly influenced by the temperature-softening effect and the

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Vakulenko, Ihor, Serhii Oleksandrovich Plitchenko, and Ahmet Fatih Yılmaz. "Influence Degree and Scheme of Hot Reduction on Properties of the Carbon Steel." İmalat Teknolojileri ve Uygulamaları 6, no. 1 (2025): 150–56. https://doi.org/10.52795/mateca.1634663.

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This study examines the impact of hot plastic deformation at 1250°C on austenite grain refinement and mechanical properties in carbon steel for railway wheels. The deformation strategies—single-step versus two-step compression with equivalent total strain—were compared to assess their effects on austenitic microstructure and material performance. Austenite grain size was quantified via light microscopy and quantitative structural analysis, while mechanical properties were evaluated using a universal tensile testing machine, following the ASTM E8 standard, at room temperature. (strain rate: 10⁻

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Date, Hidefumi. "Effect of Strain Rates on the Transformation Behavior of Ni-Ti Alloy." Materials Science Forum 539-543 (March 2007): 3231–36. http://dx.doi.org/10.4028/www.scientific.net/msf.539-543.3231.

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In order to clarify the effect of strain rates on phase transformation behaviors of Ni-Ti alloy, a compressive test using a cylindrical specimen of polycrystalline Ni-Ti alloy of Ti-50.69 at% Ni was carried out at a high strain rate and a low strain rate. The transformation temperatures were determined by a differential scanning calorimeter (DSC) using a sample cut from a compressed specimen. The transformation temperatures of the specimens before deformation were Ms= 303 K, Mf = 287 K, As = 297 K and Af = 319 K, respectively. The compressive test was carried out using specimen heated from liq

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Chen, Tiantian, Ming Wen, Hao Cui, Junmei Guo, and Chuanjun Wang. "Hot Deformation Behavior and Processing Maps of Pure Copper during Isothermal Compression." Materials 16, no. 11 (2023): 3939. http://dx.doi.org/10.3390/ma16113939.

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In this study, pure copper’s hot deformation behavior was studied through isothermal compression tests at deformation temperatures of 350~750 °C with strain rates of 0.01~5 s−1 on a Gleeble-3500 isothermal simulator. Metallographic observation and microhardness measurement were carried out of the hot compressed specimens. By analyzing the true stress–strain curves of pure copper under various deformation conditions during the hot deformation process, the constitutive equation was established based on the strain-compensated Arrhenius model. On the basis of the dynamic material model proposed by

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Higginson, R. L. "The Effect of Strain Path on the Recrystallisation of an Aluminium Manganese Alloy." Materials Science Forum 467-470 (October 2004): 375–80. http://dx.doi.org/10.4028/www.scientific.net/msf.467-470.375.

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The strain path undergone by a material can have a significant influence on the deformation behaviour, recrystallisation kinetics, grain size and crystallographic texture. To study the influence of strain path, samples of an aluminium-1%manganese alloy have been subjected to a number of strain path changes. These have been achieved using combinations of plane strain and free compression to give strain paths of 0, 90, and 180°. The development of the dislocation substructure resulting from each stage of deformation was studied using Electron Back Scatter Diffraction (EBSD) and Transmission Elec

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Shikula, E. "NONLENEAR DEFORMATION OF GRANULAR COMPOSITES." Collection of scientific works of the State University of Infrastructure and Technologies series "Transport Systems and Technologies", no. 36 (December 30, 2020): 121–31. http://dx.doi.org/10.32703/2617-9040-2020-36-13.

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The model of nonlinear deformation of a layered material with physically nonlinear layers is proposed. The laminate is considered a two-component material with random layers. The basis is the stochastic differential equations of the physically nonlinear theory of elasticity L.P. Khoroshun. The solution to the problem of the stress-strain state and effective properties of the composite material is constructed by the averaging method. An algorithm for determining the effective deformable properties of a layered material with physically nonlinear layers has been developed. The solution of nonline

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Ren, An Chao, Yu Ji, Gui Feng Zhou, and Ze Xi Yuan. "Effect of Strain Rate on Dynamic Recrystallization Behavior for V Micro-Alloy High-Carbon Steel." Advanced Materials Research 602-604 (December 2012): 401–4. http://dx.doi.org/10.4028/www.scientific.net/amr.602-604.401.

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Isothermal constant strain rate compression tests on high-carbon steel are carried out under strain rate of 1s-1, 10s-1 and 50s-1 respectively and deformation of 0.7 using the THERMECMASTOR-Z thermal simulator at a temperature of 1000°C. The austenite grain morphology before and after deformation and the true stress-strain curves during the deformation process are analyzed. The experimental results show that increased strain rate can obviously contribute to the grain refinement, and when the strain rate is at low level (e.g. 1s-1)，increased strain rate can further help refine the grains. And u

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