Relevant bibliographies by topics / Work hardening coefficients

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Work hardening coefficients'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Work hardening coefficients"

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Koneva, Nina, and Eduard Kozlov. "Stages of Plastic Deformation in Metallic Nanocrystals." Materials Science Forum 683 (May 2011): 183–87. http://dx.doi.org/10.4028/www.scientific.net/msf.683.183.

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In this paper, analysis of work hardening laws for grains with sizes on nano- and microlevel is carried out. The work is based on experimental data of deformation behavior of mainly pure copper at room temperature (RT). A special attention is given to the interval of grains with the average size between 20 nm and 230 nm. Work hardening stages of active plastic deformation during tension and compression are characterized. The dependence of work hardening coefficients on the average grains size at the nanoscale in the II, IV and VI stages is revealed for the first time. Mechanisms of deformation
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Rajendran, R., M. Venkateshwarlu, Vijay Petley, and Shweta Verma. "Strain hardening exponents and strength coefficients for aeroengine isotropic metallic materials – a reverse engineering approach." Journal of the Mechanical Behavior of Materials 23, no. 3-4 (2014): 101–6. http://dx.doi.org/10.1515/jmbm-2014-0012.

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AbstractThe strain hardening exponent and strength coefficient of the Ramberg-Osgood flow rule are required for the accurate design analysis of the materials of aeroengine components. A direct method of deriving these parameters involves the processing of the complete raw data of tensile testing as per ASTM E-646. More often, a first design effort of aeroengine components is made using catalogue data, as the evaluation of material tensile properties is a time-consuming process that takes place concurrently. Catalogue-supplied data on the monotonic loading typically contains elastic modulus, 0.
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Lee, Bo Young, Dae Hwan An, Jae Sung Kim, Hyung Kook Jin, and Duck Hee Ryu. "Study on Development of a Surface Build-Up Welding Using CH-90 Electrode to Replace Mn-Containing Rail Steel." Advanced Materials Research 15-17 (February 2006): 989–94. http://dx.doi.org/10.4028/www.scientific.net/amr.15-17.989.

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Rail steel at crossing areas bears much higher loads over any other section of a regular railway. Mn-containing casting steel is normally used for its high load-carrying capability and reduced wear rate. However, since Mn-containing casting steel tends to have casting defects, the cost of manufacturing defect-free Mn-containing casting steel becomes quite expensive. Therefore, through the use of welding, this study investigates the possibility of resurfacing Mn-containing rail steel using a CH-90 electrode as an alternative to completely replacing it. In this study, a series of experimental bu
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STRZELCZAK, Katarzyna, and Agata DUDEK. "THE STRUCTURE AND COEFFICIENT OF FRICTION OF WELDED NICKEL ALLOYS INCONEL 625 AND INCONEL 718." Tribologia 281, no. 5 (2018): 109–15. http://dx.doi.org/10.5604/01.3001.0012.7660.

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In this study, the coefficients of friction for three series of welded nickel alloy joints, subjected to different heat treatments (lack of heat treatment, solution heat treatment, precipitation hardening), were determined. Heat treatment of the prepared samples was aimed at eliminating the structural and stress gradient, because the electron beam welding technique is dedicated for constructions with very high quality and strength requirements. Given the nature of the electron beam process, the authors are aware that the obtained weld’s structures are characterized by different properties from
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Grilo, Tiago Jordão, Robertt Angelo Fontes Valente, and R. J. Alves de Sousa. "On the Study of Distinct Algorithmic Strategies in the Implementation of Advanced Anisotropic Models with Mixed Hardening." Key Engineering Materials 554-557 (June 2013): 1174–83. http://dx.doi.org/10.4028/www.scientific.net/kem.554-557.1174.

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In this study, suitable distinct stress integration algorithms for advanced anisotropic models with mixed hardening, and their implementation in finite element codes, are discussed. The constitutive model studied in the present work accounts for advanced (non-quadratic) anisotropic yield criteria, namely, the Barlat et al. 2004 model with 18 coefficients (Yld2004-18p), combined with a mixed isotropic-nonlinear kinematic hardening law. This phenomenological model allows for an accurate description of complex plastic yielding anisotropy and Bauschinger effects, which are essential for a reliable
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Pacheco, Matías, Claudio García-Herrera, Diego Celentano, and Jean-Philippe Ponthot. "Mechanical Characterization of the Elastoplastic Response of a C11000-H2 Copper Sheet." Materials 13, no. 22 (2020): 5193. http://dx.doi.org/10.3390/ma13225193.

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This work presents an elastoplastic characterization of a rolled C11000-H2 99.90% pure copper sheet considering the orthotropic non-associated Hill-48 criterion together with a modified Voce hardening law. One of the main features of this material is the necking formation at small strains levels causing the early development of non-homogeneous stress and strain patterns in the tested samples. Due to this fact, a robust inverse calibration approach, based on an experimental–analytical–numerical iterative predictor–corrector methodology, is proposed to obtain the constitutive material parameters
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Park, Taejoon, Fadi Abu-Farha, and Farhang Pourboghrat. "An Evolutionary Yield Function Model Based on Plastic Work and Non-Associated Flow Rule." Metals 9, no. 5 (2019): 611. http://dx.doi.org/10.3390/met9050611.

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A constitutive law was developed based on the evolutionary yield function to account for the evolution of anisotropy induced by the plastic deformation. For the effective description of anisotropy, the yield stress function and plastic potential were separately defined based on the non-associated flow rule. In particular, for the description of the equivalent status, the accumulated plastic work was employed as an alternative to the accumulated plastic strain. Numerical formulations based on the plastic work were also derived in case the hardening rule, as well as the evolution of the plastic
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Sawicki, Sylwester, Anna Kawałek, Konrad Laber, et al. "Plastometric Testing of Rheological Properties of 5083 and 5754 Aluminium Alloy." Key Engineering Materials 682 (February 2016): 362–66. http://dx.doi.org/10.4028/www.scientific.net/kem.682.362.

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The paper present a method for determining the real steel work-hardening curves based on the cylindrical specimen compression test. The subject of testing were 5083 and 5754 aluminium alloy. The tests were carried out using the physical simulator of metallurgical processes GLEEBLE 3800 (Figure 1a) for the temperature range of 400 ÷ 560 °C and the strain rate range of 0,1 - 1,0s-1. Based on plastic deformation parameters recorded during the experiment, mathematical processing, that is the digital filtration and approximation of the obtained testing results, will be performed. Then, using the in
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Tan, Ye Fa, Bin Cai, Long He, Sheng Qiang Hao, Hua Tan, and Li Gao. "Study on Tribological Behavior and Mechanisms of Weldox960 Steel." Advanced Materials Research 415-417 (December 2011): 2191–95. http://dx.doi.org/10.4028/www.scientific.net/amr.415-417.2191.

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Weldox960 steel is widely used in mechanical structure of military equipments as anti-wear parts. The tribological behavior and mechanisms of weldox960 steel were investigated under dry sliding friction conditions. The results show that friction coefficient of the steel increases from 0.268 to 0.365 with the increase of load. When the loads are smaller than 8N, the wear rates of the steel are in the range of 0.57~0.67×10-3 mm3/m, and the wear mechanism is multi-plastic deformation wear. If the loads are bigger than 10N, the wear rates increase to the range of 1.29~1.43×10-3 mm3/m, and the wear
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Goya, Moriaki, and Koichi Ito. "An Expression of Elastic-Plastic Constitutive Law Incorporating Vertex Formation and Kinematic Hardening." Journal of Applied Mechanics 58, no. 3 (1991): 617–22. http://dx.doi.org/10.1115/1.2897240.

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A phenomenological corner theory was proposed for elastic-plastic materials by the authors in the previous paper (Goya and Ito, 1980). The theory was developed by introducing two transition parameters, μ (α) and β (α), which, respectively, denote the normalized magnitude and direction angle of plastic strain increments, and both monotonously vary with the direction angle of stress increments. The purpose of this report is to incorporate the Bauschinger effect into the above theory. This is achieved by the introduction of Ziegler’s kinematic hardening rule. To demonstrate the validity and appli
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Dissertations / Theses on the topic "Work hardening coefficients"

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Janakiraman, Balasubramanian. "Mechanical property measurement by indentation techniques." Texas A&M University, 2004. http://hdl.handle.net/1969.1/3111.

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The mechanical properties of materials are usually evaluated by performing a tensile or hardness test on the sample. Tensile tests are often time consuming, destructive and need specially prepared specimens. On the other hand, there is no direct theoretical correlation between the hardness number and the mechanical properties of a material although phenomenological relationships do exist. The advantages of indentation techniques are that they are non-destructive, quick, and can be applied to small material samples and localized in fashion. Mechanical properties are typically determined from sp
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Book chapters on the topic "Work hardening coefficients"

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Eliseev, Alexander A., Tatiana A. Kalashnikova, Andrey V. Filippov, and Evgeny A. Kolubaev. "Material Transfer by Friction Stir Processing." In Springer Tracts in Mechanical Engineering. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-60124-9_8.

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AbstractMechanical surface hardening processes have long been of interest to science and technology. Today, surface modification technologies have reached a new level. One of them is friction stir processing that refines the grain structure of the material to a submicrocrystalline state. Previously, the severe plastic deformation occurring during processing was mainly described from the standpoint of temperature and deformation, because the process is primarily thermomechanical. Modeling of friction stir welding and processing predicted well the heat generation in a quasi-liquid medium. However, the friction stir process takes place in the solid phase, and therefore the mass transfer issues remained unresolved. The present work develops the concept of adhesive-cohesive mass transfer during which the rotating tool entrains the material due to adhesion, builds up a transfer layer due to cohesion, and then leaves it behind. Thus, the transfer layer thickness is a clear criterion for the mass transfer effectiveness. Here we investigate the effect of the load on the transfer layer and analyze it from the viewpoint of the friction coefficient and heat generation. It is shown that the transfer layer thickness increases with increasing load, reaches a maximum, and then decreases. In so doing, the average moment on the tool and the temperature constantly grow, while the friction coefficient decreases. This means that the mass transfer cannot be fully described in terms of temperature and strain. The given load dependence of the transfer layer thickness is explained by an increase in the cohesion forces with increasing load, and then by a decrease in cohesion due to material overheating. The maximum transfer layer thickness is equal to the feed to rotation rate ratio and is observed at the axial load that causes a stress close to the yield point of the material. Additional plasticization of the material resulting from the acoustoplastic effect induced by ultrasonic treatment slightly reduces the transfer layer thickness, but has almost no effect on the moment, friction coefficient, and temperature. The surface roughness of the processed material is found to have a similar load dependence.
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Conference papers on the topic "Work hardening coefficients"

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San Andre´s, Luis. "Rotordynamic Force Coefficients of Bubbly Mixture Annular Pressure Seals." In ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/gt2011-45264.

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As oil fields deplete, in particular in deep sea reservoirs, pump and compression systems work under more strenuous conditions with gas in liquid and liquid in gas mixtures, mostly inhomogeneous. Off-design operation affects system overall efficiency and reliability, including penalties in leakage and rotordynamic performance of secondary flow components, namely seals. The paper details a bulk-flow model for annular damper seals operating with gas in liquid mixtures. The analysis encompasses all-liquid and all-gas seals, as well as seals lubricated with homogenous (bubbly) mixtures, and predic
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Boix Salazar, Julio A., Dirk F. de Lange, Alberto Torres Cruz, Hugo I. Medellín Castillo, and Gilberto Mejía Rodríguez. "Elastoplastic Analysis of a Cantilever Beam Under Combined Compressive and Bending Load." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-65396.

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In this study the elastoplastic behavior of cantilever beams under a combined compressive axial load and an imposed lateral bending deflection are analyzed. Eventhough the particular condition of elastoplastic buckling has been studied before, the developed theories are limited to the prediction of the initial failure of the beam. In the current study the elastoplastic behavior of cantilever beams under compressive load at levels below the critical buckling load are studied in order to determine the remaining load bearing capacity of the beam under combined bending and axial loads, including t
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Parle, Dattatraya. "Probabilistic Design and Analysis of Pressure Measuring Probes for Creep Behavior." In ASME 2017 Gas Turbine India Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gtindia2017-4906.

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Pressure probes are typically used to measure the pressure of a fluid stream. These probes are designed to serve for 25 years life under operating pressure and temperature conditions. Therefore, such pressure probes are also designed for safe creep behavior. Typically creep is time dependent phenomenon and it can be classified as Primary, Secondary and Tertiary creep. In the literature, the creep phenomenon is studied analytically and numerically. Literature review reveals that creep analysis requires special material models and its selection depends on operating conditions. This work presents
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Basak, Shamik, and Sushanta Kumar Panda. "Application of Barlat Yld-96 Yield Criterion for Predicting Formability of Pre-Strained Dual Phase Steel Sheets." In ASME 2016 11th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/msec2016-8753.

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The selection of advanced material model considering the anisotropy mechanical properties of the thin sheet is vital in order to estimate stress based forming limit diagram (σ-FLD). In present study associative plasticity theory was applied indulging Barlat Yld-96 anisotropy yield function and the Swift hardening law was implemented for estimating the limiting stresses from the conventional strain FLD (ε-FLD) of an automotive grade dual phase steel DP600. Three different approaches were made to evaluate Yld-96 anisotropy coefficients using experimental results of stack compression and tensile
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Karaman, Ibrahim, and G. Guven Yapici. "Effect of Severe Plastic Deformation on the Mechanical Behavior of Ti-6Al-4V." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-43712.

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The present work focuses on the microstructural evolution and resulting room temperature mechanical properties of P/M Ti-6Al-4V severely deformed at different temperatures (550°C to 800°C) using Equal Channel Angular Extrusion (ECAE). The bulk materials are extruded through two channels of equal cross section intersecting an angle of 90 degree. Microstructure and mechanical properties of extruded billets are reported through electron microsopy observations and tension, compression and hardness experiments. Results are compared for different extrusion conditions including variations in temperat
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Panicker, Sudhy S., and Sushanta Kumar Panda. "Improvement in Material Flow During Non-Isothermal Warm Deep Drawing of Non-Heat Treatable Aluminum Alloy Sheets." In ASME 2016 11th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/msec2016-8756.

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Automotive industries are very much interested in implementing warm forming technology for fabrication of light weight auto-body panels using aluminum alloys without localized thinning or splitting. A non-heat treatable and low formable AA5754-H22 aluminum alloy sheet was selected in the present work, and a laboratory scale warm deep drawing test set-up and process sequences were designed to improve material flow through independent heating of punch and dies. Significant enhancement in cup depth was observed when the temperature of punch and dies were set to 30°C and 200°C respectively. Thermo
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Duan, Xinjian, Arnaud Weck, and David S. Wilkinson. "Elastic-Plastic Limit Analysis for Perforated Plates With Triangular Array of Circular Holes." In ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/pvp2006-icpvt-11-93655.

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The plastic limit load design for a perforated structure that contains a large amount of circular holes has attracted much attention from power industry in recent years. Most of the previous analyses have been built on the elastic-perfectly plastic material model with small strain finite element formulation. In the present work, a series of newly developed heterogeneous unit cells based on large strain finite element formulation are applied to consider the effect of work hardening rate and the unit cell size on the computed limit load and failure modes. The results indicate that as the unit ce
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Hofwing, Magnus, and Niclas Stro¨mberg. "Robustness of Residual Stresses in Castings and an Improved Process Window." In ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/detc2009-86454.

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In this work the robustness of residual stresses in finite element simulations with respect to deviations in mechanical parameters in castings is evaluated. Young’s modulus, the thermal expansion coefficient and the hardening are the studied parameters. A 2D finite element model of a stress lattice is used. The robustness is evaluated by comparing purely finite element based Monte Carlo simulations and Monte Carlo simulations based on linear and quadratic response surfaces. Young’s modulus, the thermal expansion coefficient and the hardening are assumed to be normal distributed with a standard
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Premanond, Varunee, Ratchanee Hato, Pakorn Chumrum, and Jiraporn Sripraserd. "The Effect of Tool Surface Treatment on Friction in Hot Forging Process." In ASME 2009 International Manufacturing Science and Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/msec2009-84062.

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This work considers the influences of various types of die surface treatment, lubricants and temperature on friction for hot forging process of brass. Well-known ring compression test were carried out to evaluate friction coefficient for various conditions. Tool material was hot work tool steel H13 and workpiece material was brass C3771. Tool surface condition selected were normal hardening, treated by hard chrome, plasma nitriding and vacuum nitriding. Tests were conducted with and without lubricants at elevated temperature between 400–600°C. The results of experiments without lubricant show
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Rauth, N. L., Mark J. Miller, X. Jack Xin, Z. J. Pei, and Karen A. Schmidt. "Effects of Air Flow, Draw Temperature and Boundary Conditions on Hardening in Ice Cream Manufacturing." In ASME 2010 International Manufacturing Science and Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/msec2010-34104.

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Energy consumption by the dairy food industry in the United States constitutes 10% of all energy consumed by the U.S. food industry, and reducing energy consumption in cooling and refrigeration of foods plays an important role in meeting the challenge of the energy crisis. Hardening is an important and energy-intensive step in ice cream manufacturing. This work presents Finite Element Method (FEM) investigation of the hardening process in ice cream manufacturing and assesses the accuracy and acceptability of the presented FEM methods. The FEM results are compared to experimentally data from th
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