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Journal articles on the topic 'HSLA'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Li, Ning, Wilasinee Kingkam, Zi Ming Bao, et al. "Effect of Alloying Elements on Mechanical Properties of High-Strength Low-Alloy Steel." Materials Science Forum 1007 (August 2020): 41–46. http://dx.doi.org/10.4028/www.scientific.net/msf.1007.41.

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In this study, the two types of high-strength low-alloy steels were melted and cast in a vacuum induction furnace. Phase transition temperature of HSLA steel was calculated by JMatPro software. The calculation results show that the two different types of HSLA steels which have equal phase proportions of ferrite and austenite at a temperature of approximately 820 and 800 °C in HSLA-I and HSLA-II, respectively. In addition, the effect of chemical composition on the microstructure and mechanical properties of steels were studied. The results indicate that the ultimate tensile stress value of HSLA

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2

Timokhina, Ilana B., Peter D. Hodgson, Simon P. Ringer, Rong Kun Zheng, and Elena V. Pereloma. "Characterization of Nano-Scale Particles in Hot-Rolled, High Strength Low Alloy Steels (HSLA)." Materials Science Forum 561-565 (October 2007): 2083–86. http://dx.doi.org/10.4028/www.scientific.net/msf.561-565.2083.

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The contribution of nano-scale particles observed using Atom Probe Tomography in an increase of yield strength of conventional and advanced HSLA steels was studied. The advanced HSLA steel showed higher yield strength than conventional HSLA steel. There were two types of carbides, which primarily contribute to an increase in yield strength of conventional HSLA steel: (i) coarse TiC with average size of 25±5nm and (ii) fine TiC with average radius of 3±1.2nm. The presence of two types of carbides was found in the microstructure of advanced HSLA steel: (i) nano-scale Ti0.98Mo0.02C0.6 carbides wi

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3

Zhang, Jiarong, Xinjie Di, Chengning Li, Xipeng Zhao, Lingzhi Ba, and Xin Jiang. "Additive manufacturing of Inconel625-HSLA Steel functionally graded material by wire arc additive manufacturing." Metallurgical Research & Technology 118, no. 5 (2021): 502. http://dx.doi.org/10.1051/metal/2021063.

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Functional graded materials (FGMs) have been widely applied in many engineering fields, and are very potential to be the substitutions of dissimilar metal welding joints due to their overall performance. In this work, the Inconel625-high-strength low-alloy (HSLA) Steel FGM was fabricated by wire arc additive manufacturing (WAAM). The chemical composition distribution, microstructure, phase evolution and mechanical properties of the FGM were examined. With the increasing of HSLA Steel, the chemical composition appeared graded distribution, and the primary dendrite spacing was largest in graded

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4

Zhang, Chun Guo, Peng Min Lu, and Jun Hong Li. "Effect of Buffer Layer Thickness on Fatigue and Residual Stress of Welded High-Strength Low-Alloy." Advanced Materials Research 820 (September 2013): 110–13. http://dx.doi.org/10.4028/www.scientific.net/amr.820.110.

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The present work dealt with the fatigue and residual stress (RS) effects of a soft buffer layer (BL) between the parent metal and the weld metal (WM) on welded high-strength low-alloy (HSLA) steel. Six strategies were pursued by varying BL thickness and changing U-notch position with respect to the WM in extended-compact tension specimen. The U-notch position was changed to study the effect of welding RS field, acting along the fatigue crack growth path. The welded HSLAs with BLs strategies were compared to the specimens without BLs strategies, before and after releasing RS respectively. The r

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5

Speer, J. G., and S. S. Hansen. "As-Rolled High-Strength Plate Grades for Navy Shipbuilding Applications." Journal of Ship Production 5, no. 03 (1989): 200–205. http://dx.doi.org/10.5957/jsp.1989.5.3.200.

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As-rolled high-strength, low-alloy (HSLA) steel plates offer a number of benefits compared with heat-treated plates, and this paper discusses laboratory and production experiments which have been conducted to develop as-rolled grades for high-strength Navy shipbuilding applications (for example, HSLA-65 and HSLA-80). A low-carbon niobium/vanadium microalloyed steel is shown to offer favorable combinations of strength, toughness, and weldability. The results indicate that an as-rolled grade which meets the current HSLA-80 strength and impact requirements can be produced in thicknesses up to app

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6

Jindal, Sandeep, Rahul Chhibber, and N. P. Mehta. "Issues in Welding of HSLA Steels." Advanced Materials Research 365 (October 2011): 44–49. http://dx.doi.org/10.4028/www.scientific.net/amr.365.44.

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The application of High Strength Low Alloy (HSLA) steels has expanded to almost all fields viz. automobile industry, ship building, line pipe, pressure vessels, building construction, bridges, storage tanks. HSLA steels were developed primarily for the automotive industry to replace low-carbon steels in order to improve the strength-to-weight ratio and meet the need for higher-strength materials. Due to higher-strength and added excellent toughness and formability, demand for HSLA steel is increasing globally. With the increase of demand; other issues like the selection of filler grade and sel

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7

Christein, J. P., and J. L. Warren. "Implementation of HSLA-100 Steel in Aircraft Carrier Construction—CVN 74." Journal of Ship Production 11, no. 02 (1995): 97–101. http://dx.doi.org/10.5957/jsp.1995.11.2.97.

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High strength low alloy (HSLA)-100 steel was developed to be less sensitive to hydrogen embrittlement than high yield (HY)-100 steel. The primary benefits sought through the use of this new steel were savings in energy, labor, and scheduling that would result from reduced preheat for welding. This paper reviews the overall efforts required to implement the use of HSLA-100 steel during CVN 74 aircraft carrier construction. It discusses the engineering and design effort required to incorporate a new material on a vessel midway through construction. Also included is a discussion of the developmen

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8

Fu, Jie, HuaJie Wu, YangChun Liu, and YongLin Kang. "Nano-scaled iron-carbon precipitates in HSLC and HSLA steels." Science in China Series E: Technological Sciences 50, no. 2 (2007): 166–76. http://dx.doi.org/10.1007/s11431-007-0008-2.

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9

Jiménez-Peña, Carlos, Constantinos Goulas, Johannes Preußner, and Dimitri Debruyne. "Failure Mechanisms of Mechanically and Thermally Produced Holes in High-Strength Low-Alloy Steel Plates Subjected to Fatigue Loading." Metals 10, no. 3 (2020): 318. http://dx.doi.org/10.3390/met10030318.

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High-strength low-alloy steels (HSLA) are gaining popularity in structural applications in which weight reduction is of interest, such as heavy duty machinery, bridges, and offshore structures. Since the fatigue behavior of welds appears to be almost independent of the base material and displays little improvement when more resistant steel grades are employed, the use of bolted joints is an alternative joining technique which can lead to an increased fatigue performance of HSLA connections. Manufacturing a hole to allocate the fastener elements is an unavoidable step in bolted elements and it

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10

Yang, Yu-Ping, T. D. Huang, Steve Scholler, Randy Dull, Charles R. Fisher, and Wei Zhang. "Weld Residual Stress Measurement on Ship Structures." Journal of Ship Production and Design 36, no. 01 (2020): 41–51. http://dx.doi.org/10.5957/jspd.2020.36.1.41.

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Weld residual stresses on ship structures were significantly investigated by using a three-step approach. Step 1 is to measure residual stress on small samples in laboratories to validate measurement methods, step 2 is to measure residual stress on three test panels made of DH36, HSLA-65, and HSLA-80 in a shipyard, and step 3 is to measure residual stress on a large mock-up unit and on a tie-down. Step-1 and step-2 study, presented in the Society of Naval Architects and Marine Engineers-2017 conference, concluded that portable X-ray equipment can be used in a shipyard environment to provide re

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11

Burke, M. G., N. S. Pottore, and A. J. DeArdo. "NbCN precipitation during solidification of HSLA steels." Proceedings, annual meeting, Electron Microscopy Society of America 44 (August 1986): 578–79. http://dx.doi.org/10.1017/s042482010014436x.

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A TEM/STEM investigation has been directed towards improving the quality of continuously cast HSLA steels. The considerable economic advantages to be derived from continuous casting of HSLA steels is being arrested by the greatly reduced hot-ductility of the con-cast structures. Therefore, to determine the cause of this reduction in ductility, a microstructura1 investigation was conducted using unidirectiona11y solidified ingots to simulate the continuous casting process. This is part of an ongoing research program on Nb-bearing HSLA steels.

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12

Tomków, Jacek. "Weldability of Underwater Wet-Welded HSLA Steel: Effects of Electrode Hydrophobic Coatings." Materials 14, no. 6 (2021): 1364. http://dx.doi.org/10.3390/ma14061364.

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The paper presents the effects of waterproof coatings use to cover electrodes on the weldability of high-strength, low-alloy (HSLA) steel in water. With the aim of improving the weldability of S460N HSLA steel in water, modifications of welding filler material were chosen. The surfaces of electrodes were covered by different hydrophobic substances. The aim of the controlled thermal severity (CTS) test was to check the influence of these substances on the HSLA steel weldability in the wet welding conditions. The visual test, metallographic tests, and hardness Vickers HV10 measurements were perf

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13

Shams, Najma. "Carbonitride Precipitates in HSLA." JOM 38, no. 5 (1986): 31–33. http://dx.doi.org/10.1007/bf03257840.

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14

Fox, A. G., V. R. Mattes, S. Mikalac, and M. G. Vassilaros. "Electron Microscope studies of the microstructures in as-quenched and aged HSLA-100 production steels and correlation with mechanical properties." Proceedings, annual meeting, Electron Microscopy Society of America 49 (August 1991): 582–83. http://dx.doi.org/10.1017/s0424820100087227.

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Because of their excellent weldability, high strength low alloy (HSLA) ultra low carbon bainitic (ULCB) steels are finding increasing applications in ship and submarine construction. In order to achieve the required strength and toughness in ULCB HSLA steels it is necessary to control chemical composition and thermo-mechanical processing very carefully so that the desired microstructure and mechanical properties can be achieved. For instance HSLA 100 ULCB steel (nominal yield strength 100 ksi) used by the U.S. Navy in shipbuilding applications can derive its strength and toughness from the fol

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15

Almojil, Marwan, and Pete S. Bate. "Cold Rolling and Annealing Microstructures and Textures of Low Carbon Steels." Materials Science Forum 654-656 (June 2010): 214–17. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.214.

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The development of crystallographic textures of IF and HSLA steels after 20, 50, 70 and 90% cold rolling reductions and subsequent recrystallisation have been investigated using Electron Backscattered Diffraction (EBSD). The HSLA steel was initially processed to give a volume fraction of about 0.2 of fine pearlite colonies, which acted as mechanically hard particles. Both cold rolling and recrystallisation textures are shown to be largely dependent on the rolling reduction for both steels. With increasing rolling reduction, the texture shows gradual intensification of α and γ fibre components.

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16

Chen, Yan Tang, Kai Guang Zhang, and Ji Hao Cheng. "Microstructure Evolution of a HSLA Offshore Steel with Cooling Rates." Advanced Materials Research 583 (October 2012): 306–9. http://dx.doi.org/10.4028/www.scientific.net/amr.583.306.

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The high strength low alloy (HSLA) steels have been extensively used in offshore engineering. The appropriate microstructure of the HSLA structural steels was designedly controlled in steel making for offshore construction. The different microstructures of the steel were formed when shifted the cooling rate after final rolling. Experiment results shown that ferrite and pearlite were observed in the HSLA steel with a cooling rate less than 0.2°C/s. Bainite was formed when the cooling rate ranged from 1.0°C/s to 5.0°C/s and martensite was seen in the steel plate with a cooling rate more than 30°

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17

Montemarano, T. W., B. P. Sack, J. P. Gudas, M. G. Vassilaros, and H. H. Vanderveldt. "High Strength Low Alloy Steels in Naval Construction." Journal of Ship Production 2, no. 03 (1986): 145–62. http://dx.doi.org/10.5957/jsp.1986.2.3.145.

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The Naval Sea Systems Command has recently certified a lower-cost alternative steel to the HY-80 steel presently used in construction of naval surface ships. This alternative steel is based on the commercial development of high strength low alloy (HSLA) steels originally directed to the offshore oil exploration platform and gas line transmission industries. The certification is a result of an ongoing research and development program begun in 1980. This paper addresses several aspects of the HSLA steel development effort, including a discussion of the properties and metallurgy of this steel, an

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18

Winarto, Muhammad Anis, and Taufiqullah. "Cooling Rate Control on Cold Cracking in Welded Thick HSLA Steel Plate." Materials Science Forum 689 (June 2011): 269–75. http://dx.doi.org/10.4028/www.scientific.net/msf.689.269.

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Cold cracking phenomenon is a very significant problem on welding of steel. This phenomenon usually occurs after welding process finishes in more than 24 hours. Crack often takes place in the heat affected zone area. Generally, cold cracking is due to hydrogen diffusion during welding process, residual stress and susceptible microstructure at low temperature (below 150°C). Welding process on thick plate high strength low alloy (HSLA) steel gives a high risk to cold cracking phenomenon. The cooling rate of thick plate during welding may increase the absorbtion of heat compared to thin plate. Co

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19

Yang, Jian Guo, Lu Yong Huang, Hai Bo Pan, Xue Song Liu, and Hong Yuan Fang. "Control of Cold Welding Cracks in 30CrMnSi Steel by Welding with Trailing Impacting and Rolling." Advanced Materials Research 295-297 (July 2011): 1251–58. http://dx.doi.org/10.4028/www.scientific.net/amr.295-297.1251.

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As a kind of the high strength low alloy steel (HSLA), 30CrMoSi has been used widely in some industrial fields. However, just like some HSLA, this steel also faces some problems when it is welded, especially such problem as cold cracking in the welded joints. In this paper, the cold welding cracks and microstructure of the joints of 30CrMoSi steel were studied by scanning electron microscopy (SEM) and optical microscopy (OM), and a method called welding with trailing impacting and rolling (WTIR) was utilized to solve the problem mentioned above by decreasing the residual welding stress which i

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20

Locci, I. E. "TEM Observations of Vanadium Carbide Reversion in an HSLA Steel." Proceedings, annual meeting, Electron Microscopy Society of America 43 (August 1985): 332–33. http://dx.doi.org/10.1017/s0424820100118539.

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Microalloy precipitates in HSLA steels have relatively high equilibrium solubility temperatures. Being equilibrium phases, they are not normally associated with precipitate reversion processes. However, a recent observation has indicated that VC precipitate reversion may occur when HSLA steels are subjected to rapid heat treatment cycles. This investigation sought to determine if VC reversion occurs during rapid austenitization heat treatment cycles applied to a.14 wt% C,.48 wt% Mn and.49 wt% V HSLA steel.As-hot-rolled strips of the alloy were cut into sections VL cm by ∼0.5 cm thick. The equi

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21

Klenam, D. E. P., L. H. Chown, M. J. Papo, and L. A. Cornish. "Phase proportions, carbon equivalent, mechanical properties and their effect on material cost of railway axle steels." MRS Advances 3, no. 37 (2018): 2169–81. http://dx.doi.org/10.1557/adv.2018.348.

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AbstractCommuter trains with solid axle configuration are produced from medium carbon steel due to cost restrictions. High-speed trains have hollow axle configuration for reduced weight and are made from high strength low-alloy (HSLA) steels. The HSLA steels have higher amounts of C, Cr, Ni, Mo, V and Nb, and are more expensive than medium carbon steels. The effects of phase proportions, carbon equivalent (CE), yield strength and ultimate tensile strength (UTS) on material costs of existing railway axle steels were studied using Thermo-Calc. Medium carbon rail axle steels had higher Fe3C phase

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22

Zhang, Mei, Jun Zhang, Yu Xiang Ning, Tao Wang, and Zi Wan. "Springback Behavior of Advanced High Strength Steel (AHSS) CP800." Advanced Materials Research 820 (September 2013): 45–49. http://dx.doi.org/10.4028/www.scientific.net/amr.820.45.

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800MPa grade Advanced High Strength Steels (AHSS), Complex Phase steel CP800, containing microalloying elements, are chosen to test the stamping properties in different test conditions and compared with traditional high strength low alloy (HSLA) steels HSLA S700MC. Tensile test, and HAT shape stamping test are taken to investigate the properties of the materials. Test results indicate that the studied 800MPa grade AHSS shows a better strength ductility balance compared with the reference HSLA steels. Under the same HAT shape springback stamping condition, HSLA steels S700MC always show the lar

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23

Jiang, Hao-Jie, Hong-Liang Dai, Kai Zhu, and Yi-Ming Fu. "Thermoelastoplastic Behavior of a HSLA Steel Plate Subjected to Low-Velocity Impact." International Journal of Structural Stability and Dynamics 15, no. 03 (2015): 1450056. http://dx.doi.org/10.1142/s0219455414500564.

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The thermoelastoplastic behavior of a high strength low alloy (HSLA) steel plate subjected to low-velocity impact is investigated in this paper. A yield criterion related to the spherical tensor of stress is proposed to describe the mixed hardening of the orthotropic material. Based on the classical nonlinear thin plate theory, the incremental nonlinear motion equations are obtained, and are solved by the combination of finite difference method and Newmark method with iterations. To explain the contact process, a thermoelastoplastic contact criterion is developed, of which the validity has bee

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24

Padap, Aditya K., Gajanan P. Chaudhari, and Sameer K. Nath. "Ultrafine-Grained HSLA Steel Processed Using MAF: Dry Sliding Wear and Corrosion Behaviour." Materials Science Forum 710 (January 2012): 276–81. http://dx.doi.org/10.4028/www.scientific.net/msf.710.276.

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As ultrafine grained (UFG) steels obtained by severe plastic deformation (SPD) are useful for structural purposes and micro devices, it is necessary to establish the relation of microstructure with wear and corrosion properties. Very few studies are available that correlate the microstructural changes and the mechanical properties of UFG steels to the degradation phenomena such as wear and corrosion. In present work a HSLA steel was severely deformed by warm (500°C) multiaxial forging (MAF) technique using up to nine strain steps. Submicron sized grain size was obtained after warm MAF. The har

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25

Mandal, P. K., and Ravi Kant. "Effect of Microalloying Elements on Mechanical Properties in the High Strength Low Alloy Steel." Materials Science Forum 830-831 (September 2015): 231–33. http://dx.doi.org/10.4028/www.scientific.net/msf.830-831.231.

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The effect of microalloying elements in Ti-Nb-V containing high strength low alloy (HSLA) steel has been investigated in the present study. The addition of low alloying elements (such as Ti, Nb and V) and distinct heating treatment processes has been used to improve the mechanical properties of HSLA steel. The effect on the microstructure and mechanical properties of normalizing treatment (at 950°C) of as forged steel has been investigated. The microstructural characterization of microalloyed HSLA steel is carried out by using different techniques such as optical microscopy, scanning electron

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Kalinowska-Ozgowicz, Elzbieta. "Kinetics of the precipitation in austenite HSLA steels." Materiali in tehnologije 49, no. 5 (2015): 673–79. http://dx.doi.org/10.17222/mit.2014.139.

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27

Munro, Cameron, Allison E. Nolting, Xin Jin Cao, and Priti Wanjara. "Hybrid Laser-Arc Welding of HSLA-65 Steel Plate: Microstructural and Mechanical Property Evaluation of Butt Welds." Materials Science Forum 706-709 (January 2012): 2992–97. http://dx.doi.org/10.4028/www.scientific.net/msf.706-709.2992.

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High strength low alloy (HSLA) steel, namely HSLA-65, has shown promise as a replacement for more common high strength shipbuilding steels. However, conventional high heat input welding processes can cause significant distortion, often requiring expensive post-weld reworking. Butt welds in HSLA-65 steel were fabricated using a hybrid fibre laser-gas metal arc welding (GMAW) procedure to investigate the efficacy of distortion mitigation via low heat input joining. Heat input from the laser and arc sources were roughly equal at ~5.2 kW each, and plates were welded in either the laser-leading or

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28

Jia, Kun Ning. "Weldability of Ca Microalloyed HSLA Steel." Advanced Materials Research 146-147 (October 2010): 1174–77. http://dx.doi.org/10.4028/www.scientific.net/amr.146-147.1174.

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The welding cold cracking tendencies of Ca microalloyed HSLA steel was evaluated using crack sensitivity index Pcm, oblique Y-groove cracking test and the hardness of simulation CGHAZ(coarse grain heat affected zone) in this paper. The organizational structure and mechanical properties of simulation CGHAZ at different t8/5 was analysised in this paper two. The results show that:steel welding cold crack is less sensitive; the CaO pinning austenite grain boundaries effectively, fining the grain size of CGHAZ, increasing the amount of IFA, and improving the toughness of CGHAZ.The weldability of C

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29

de la Garza, Maribel, Mayra Moreno, Martha Patrizia Guerrero-Mata, Patricia del C. Zambrano, Rafael Colás, and Yvan Houbaert. "Characterization of Galvannealed HSLA Steels." Advanced Materials Research 68 (April 2009): 159–66. http://dx.doi.org/10.4028/www.scientific.net/amr.68.159.

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Galvannealed coatings are obtained by heat treating galvanized steel strips and are widely used in the automotive industry due to their improved properties. The variables influencing coating formation on high strength low alloy steel (HSLA) were analyzed. The study was carried out on samples obtained from an industrial plant and on samples coated in a hot dip process simulator. The mechanical properties of the steel substrate were evaluated, and the morphology and Fe content in the various phases of the coating and its characteristics were analyzed and compared. It was found that the Fe-Zn pha

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30

Mohan, S., Ved Prakash, and J. P. Pathak. "Wear characteristics of HSLA steel." Wear 252, no. 1-2 (2002): 16–25. http://dx.doi.org/10.1016/s0043-1648(01)00834-1.

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31

Liu, Shi Zhong. "Metallography of HSLA Steel Weldments." Key Engineering Materials 69-70 (January 1992): 1–20. http://dx.doi.org/10.4028/www.scientific.net/kem.69-70.1.

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32

Militzer, Matthias, Warren J. Poole, and Weiping Sun. "Precipitation hardening of HSLA steels." Steel Research 69, no. 7 (1998): 279–85. http://dx.doi.org/10.1002/srin.199805550.

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Shams, Najma. "Austenite Grain Size in HSLA." JOM 39, no. 3 (1987): 39–41. http://dx.doi.org/10.1007/bf03258879.

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34

Bassim, M. N., R. J. Klassen, M. R. Bayoumi, and H. G. F. Wilsdorf. "Fracture topography of HSLA steels." Materials Science and Engineering 92 (August 1987): 107–11. http://dx.doi.org/10.1016/0025-5416(87)90160-1.

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Paules, John R. "Developments in HSLA steel products." JOM 43, no. 1 (1991): 41–44. http://dx.doi.org/10.1007/bf03220117.

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36

Pouranvari, M. "On the Failure Mode of Resistance Spot Welded Hsla 420 Steel / Tryb Uszkodzenia Zgrzewanych Spoin Stali Hsla 420." Archives of Metallurgy and Materials 58, no. 1 (2013): 67–72. http://dx.doi.org/10.2478/v10172-012-0152-y.

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Failure mode of resistance spot welds (interfacial vs. pullout) is a qualitative measure of resistance spot weld performance. Considering adverse effect of interfacial failure mode on the vehicle crashworthiness, process parameters should be adjusted so that the pullout failure mode is guaranteed ensuring reliability of spot welds during vehicle lifetime. In this paper, metallurgical and mechanical properties of HSLA 420 resistance spot welds are studied with particular attention to the failure mode. Results showed that the conventional weld size recommendation of 4t0:5 (t is sheet thickness)

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37

Liu, Yan, Jian Ming Wang, Yang Liu, and Chun Lin He. "Effect of Magnesium Addition on the Cast Microstructure of a Kind of HSLA Steel." Applied Mechanics and Materials 395-396 (September 2013): 293–96. http://dx.doi.org/10.4028/www.scientific.net/amm.395-396.293.

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A new technology to obtain a fine-structured and high-toughness HAZ of HSLA steel for high heat input welding is developed using metallurgical thermodynamics, physical chemistry of metallurgy and material processing methods synthetically in this study. A kind of HSLA steel is designed in this experiment. The thermal stability second phase particles which would not be dissolved or aggregated at high temperature will be expected by means of adding magnesium into the steel in the form of Mg-Zr alloy. The effect of magnesium addition on the cast microstructure of HSLA steel was analysed. The resul

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Liu, Yan, Yang Liu, Jian Ming Wang, and Kai Wang. "Effect of Calcium Addition on the Cast Microstructure of a Kind of HSLA Steel." Applied Mechanics and Materials 685 (October 2014): 18–21. http://dx.doi.org/10.4028/www.scientific.net/amm.685.18.

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Using the oxide of high melting-point and high stability to pin the grain boundaries is an effective method to improve the welding performance of the HSLA steel in this study. A kind of HSLA steel is designed in this experiment. The thermal stability second phase particles which would not be dissolved or aggregated at high temperature will be expected by means of adding calcium into the steel in the form of Si-Ca alloy. The effect of calcium addition on the cast microstructure of HSLA steel was analysed. The results show that the cast microstructure is mainly consist of lamellar and acicular f

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39

Varughese, R., and P. R. Howell. "Austenite transformation products in quenched low-carbon HSLA steel." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 4 (1990): 902–3. http://dx.doi.org/10.1017/s0424820100177647.

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The alloy design for the HSLA-100 plate steel aims at optimizing the strength and toughness through developing a refined ferritic microstructure while enhancing the weldability by lowering the carbon levels to 0.04 wt% or less. The austenite grain refining potential of microalloying additions of niobium is coupled with the hardenability effects of Mn, Ni, Cr and Mo to achieve a fine acicular microstructure through water quenching prior to age-hardening through copper precipitation. Wilson et. al, in developing CCT diagrams for these HSLA steels noted that the as-quenched microstructure in the

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40

Zhang, Yinhui, Jian Yang, Longyun Xu, et al. "The Effect of Ca Content on the Formation Behavior of Inclusions in the Heat Affected Zone of Thick High-Strength Low-Alloy Steel Plates after Large Heat Input Weldings." Metals 9, no. 12 (2019): 1328. http://dx.doi.org/10.3390/met9121328.

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Ca deoxidation has been acknowledged recently as an effective oxide metallurgy technology that improves the toughness of the heat affected zone (HAZ) in high-strength low-alloy (HSLA) steel plates after large heat input welding. This paper describes the effect of Ca concentrations on the formation behavior of the non-metallic inclusions in the HAZs of a series of thick HSLA steel plates after large heat input welding at 400 kJ cm−1. The quantitative statistics on the inclusions show that the Ca addition significantly decreases the quantity of the pure MnS sulfide, but increases that of the com

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Mishra, Archana, and Antaryami Mishra. "Artificial Neural Network – An Application to Predict the Fatigue Crack Growth Rate of HSLA Steel and Copper." Advanced Materials Research 630 (December 2012): 8–13. http://dx.doi.org/10.4028/www.scientific.net/amr.630.8.

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In the present work , a prediction method has been used to describe the life of High Speed Low Alloy steel (HSLA Steel ) and Copper under constant load ratio by using Artificial Neural Network (ANN). Therefore a methodology has been developed to determine the fatigue crack growth rate (da/dN) of HSLA steel and Copper under constant amplitude loading at different load ratios i.e. R = 0, 0.2, 0.4, 0.5, 0.6 and 0.8 by adopting an exponential model to raw experimental a – N data. A soft-computing technique, i.e. Artificial Neural Network (ANN) has been formulated and implemented to estimate the fa

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Janjusevic, Zoran, Zvonko Gulisija, Marija Mihailovic, and Aleksandra Pataric. "The investigation of applicability of the Hollomon-Jaffe equation on tempering the HSLA steel." Chemical Industry and Chemical Engineering Quarterly 15, no. 3 (2009): 131–36. http://dx.doi.org/10.2298/ciceq0903131j.

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High strength low-alloyed (HSLA) Cr-Mn-Si steels belong to a group of steels that can reach their full mechanical properties after quenching and tempering. Those properties depend both on the temperature and time of tempering. Knowing the tempering parameters, it is possible to reach the desired properties of the treated steel. Some results on investigating the Hollomon-Jaffe equation (in parametric form) application for tempering of HSLA steel, are shown in this paper. The experiments were performed in real production conditions, using a standard material. The quenching was performed at 870?C

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Hong, Steven, H. C. Lin, C. H. Yang, L. Y. Tseng, and K. M. Lin. "Effects of Heat Treatment and Composition Modification on SAE 8620 Steels." Materials Science Forum 539-543 (March 2007): 4452–57. http://dx.doi.org/10.4028/www.scientific.net/msf.539-543.4452.

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The effects of quench-tempering treatment and composition modification on SAE 8620 steels have been investigated. Experimental results show that the 400°C tempering of SAE 8620 steels can exhibit an excellent overall performance, including the mechanical strength, impact toughness and corrosion resistance. By slightly adding alloy elements into SAE 8620 steels, the modified HSLA steels exhibit excellent hardenability, high mechanical strength and elongation, and ductile fracture behavior. These excellent performances are comparable to those of HSLA-100 steels and can satisfy well the requireme

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Buzolin, Ricardo Henrique, Brianda Rangel Francisco, Erenilton Pereira da Silva, et al. "Dissimilar Friction Stir Welding of HSLA Steel to Austenitic High-Mn TRIP Steel." Materials Science Forum 879 (November 2016): 2306–11. http://dx.doi.org/10.4028/www.scientific.net/msf.879.2306.

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The microstructure and mechanical properties of dissimilar butt-joints between a high-strength low alloyed (HSLA) grade and an austenitic high Mn TRIP steel were investigated. The tool rotation and the tool offset toward the TRIP steel were varied between 300–500 rpm and 1–2 mm, respectively. Tool advancing speed amounted to 100 mm/min. Maximum tension stress was observed for the butt-joint welded with 300 rpm and 2 mm offset. The lowest increase in hardness within the stirred zone also occurred for this FSW condition, indicating that this tool rotation is more promising for welding dissimilar

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Xie, C. L., S. Ghosh, and M. Groeber. "Modeling Cyclic Deformation of HSLA Steels Using Crystal Plasticity." Journal of Engineering Materials and Technology 126, no. 4 (2004): 339–52. http://dx.doi.org/10.1115/1.1789966.

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High strength low alloy (HSLA) steels, used in a wide variety of applications as structural components are subjected to cyclic loading during their service lives. Understanding the cyclic deformation behavior of HSLA steels is of importance, since it affects the fatigue life of components. This paper combines experiments with finite element based simulations to develop a crystal plasticity model for prediction of the cyclic deformation behavior of HSLA-50 steels. The experiments involve orientation imaging microscopy (OIM) for microstructural characterization and mechanical testing under uniax

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Banerjee, Kumkum, and U. K. Chatterjee. "Hydrogen permeation and hydrogen content under cathodic charging in HSLA 80 and HSLA 100 steels." Scripta Materialia 44, no. 2 (2001): 213–16. http://dx.doi.org/10.1016/s1359-6462(00)00594-7.

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Banerjee, K., and U. K. Chatterjee. "Effect of microstructure on hydrogen embrittlement of weld-simulated HSLA-80 and HSLA-100 steels." Metallurgical and Materials Transactions A 34, no. 6 (2003): 1297–309. http://dx.doi.org/10.1007/s11661-003-0241-7.

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Shin, Giseung, Ji hyun Yoon, Dae Whan Kim, Yongho Park, and Jeoung Han Kim. "A Study on the Influence of Laser Power on the Microstructure and Mechanical Properties of Functionally Graded Materials Produced by Direct Energy Deposition." Korean Journal of Metals and Materials 58, no. 11 (2020): 782–92. http://dx.doi.org/10.3365/kjmm.2020.58.11.782.

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This study investigated the effects of laser power on the microstructure and mechanical properties of functionally gradient materials (FGM) produced by direct energy deposition. The FGM consisted of five different layers, which were a mixture of austenitic stainless steel (Type 316L) and ferritic steel (HSLA). During the direct energy deposition, two different laser power conditions (450W and 380W) were used. The ratio of Type 316L and HSAL at each deposition layers were 100:0, 65:35, 50:50, 25:75, and 0:100. After the direct energy deposition process, no cracks or delamination were seen betwe

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Gill, S. J., and T. W. Crooker. "Fatigue Crack Propagation in an HSLA Steel (MF-80) in Air and in Salt Water." Marine Technology and SNAME News 27, no. 04 (1990): 221–24. http://dx.doi.org/10.5957/mt1.1990.27.4.221.

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Fatigue crack propagation was studied in MF-80 HSLA steel in ambient room air and in 3.5 percent sodium chloride salt water. Region II fatigue crack growth rate (da/dN) data were obtained at two load ratios, R = 0.10 and R = 0.67. da/dN values were found to be affected by both load ratio and environment, with the greatest effect being caused by the combination of high load ratio and salt-water environment. Overall, the results of this study suggest that MF-80 HSLA steel may have slightly less Region II fatigue crack propagation resistance than other high-strength steels of comparable strength.

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Park, Hyung-Kun, Hee-Jin Kim, and Chul-Gyu Park. "Development of Preheat-free GMA Welding Wire for HSLA-100 Steel." Journal of the Korean Welding and Joining Society 29, no. 2 (2011): 7–12. http://dx.doi.org/10.5781/kwjs.2011.29.2.007.

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