Acta Metall Sin  1995, Vol. 31 Issue (6): 248-253    DOI:

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CORRELATION BETWEEN YIELD STRESS AND STRAIN RATE FOR METALLIC MATERIALS AND THERMAL ACTIVATION APPROACH

TANG Changguo (Northwestern Polytechnical University; Xi'an 710072)ZHU Jinhua;ZHOU Huijiu (State Laboratory for Mechanical Behaviour of Materials;Xi'an Jiaotong University 710049)

TANG Changguo (Northwestern Polytechnical University; Xi'an 710072)ZHU Jinhua;ZHOU Huijiu (State Laboratory for Mechanical Behaviour of Materials;Xi'an Jiaotong University 710049). CORRELATION BETWEEN YIELD STRESS AND STRAIN RATE FOR METALLIC MATERIALS AND THERMAL ACTIVATION APPROACH. Acta Metall Sin, 1995, 31(6): 248-253.

Abstract References Related Articles Recommended Metrics Download:  PDF(376KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The effect of the strain rate on tensile behaviour has been investigated for 4 metallic materials. From the tests, a two-stage linear relation has been found between yield stress(σ_s) and strain rate(ε),σ_s=σ_0+klgε. A new mechanism of thermal activation produced by the response of thermal vibration of dislocation lines to loading frequences was suggested, from which the critical strain rate calculated is in agreement with the measured one.Base on these studies the disspative map of the effect of ε on σs can be re-divided into rich-, poor-thermal activation region. Key words:  yield stress      strain rate      thermal activation      Received:  18 June 1995      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1995/V31/I6/248 1MeyerLW．3rdConfMechProcHighRatesofStrain．Oxford,1984:812ClarkDS．WoodDS．TransAmSocMet,1950;42:453AlfredSeeger．PhilosMag,1955;46:11944ConradH,JMet,1964;(7):5825CampbellJD．FergusonWG．PhilosMag,1970;21:636张玉华,朱金华．西安交通大学学报,1989,23(Suppl．2):3477Rosenfield,Hahn．ASMQTrans,1966;59:9628FreidelJ著,王煜译．位错．北京:科学出版社,1980:809杨振宇．兵器材料科学与工程,1990;1:710哈宽富．金属力学性质的微观理论．北京:科学出版社,1983:37X [1] WANG Kai, JIN Xi, JIAO Zhiming, QIAO Junwei. Mechanical Behaviors and Deformation Constitutive Equations of CrFeNi Medium-Entropy Alloys Under Tensile Conditions from 77 K to 1073 K[J]. 金属学报, 2023, 59(2): 277-288. [2] CHANG Litao. Corrosion and Stress Corrosion Crack Initiation in the Machined Surfaces of Austenitic Stainless Steels in Pressurized Water Reactor Primary Water： Research Progress and Perspective[J]. 金属学报, 2023, 59(2): 191-204. [3] WANG Nan, CHEN Yongnan, ZHAO Qinyang, WU Gang, ZHANG Zhen, LUO Jinheng. Effect of Strain Rate on the Strain Partitioning Behavior of Ferrite/Bainite in X80 Pipeline Steel[J]. 金属学报, 2023, 59(10): 1299-1310. [4] CHEN Yang, MAO Pingli, LIU Zheng, WANG Zhi, CAO Gengsheng. Detwinning Behaviors and Dynamic Mechanical Properties of Precompressed AZ31 Magnesium Alloy Subjected to High Strain Rates Impact[J]. 金属学报, 2022, 58(5): 660-672. [5] Xiangru GUO, Chaoyang SUN, Chunhui WANG, Lingyun QIAN, Fengxian LIU. Investigation of Strain Rate Effect by Three-Dimensional Discrete Dislocation Dynamics for fcc Single Crystal During Compression Process[J]. 金属学报, 2018, 54(9): 1322-1332. [6] Xudong LI, Pingli MAO, Yanyu LIU, Zheng LIU, Zhi WANG, Feng WANG. Anisotropy and Deformation Mechanisms ofAs-Extruded Mg-3Zn-1Y Magnesium AlloyUnder High Strain Rates[J]. 金属学报, 2018, 54(4): 557-565. [7] Xifeng LI, Nannan CHEN, Jiaojiao LI, Xueting HE, Hongbing LIU, Xingwei ZHENG, Jun CHEN. Effect of Temperature and Strain Rate on Deformation Behavior of Invar 36 Alloy[J]. 金属学报, 2017, 53(8): 968-974. [8] Xu YANG, Bo LIAO, Jian LIU, Wei YAN, Yiyin SHAN, Furen XIAO, Ke YANG. Embrittlement Phenomenon of China Low Activation Martensitic Steel in Liquid Pb-Bi[J]. 金属学报, 2017, 53(5): 513-523. [9] Yun CAI,Chaoyang SUN,Li WAN,Daijun YANG,Qingjun ZHOU,Zexing SU. STUDY ON THE DYNAMIC RECRYSTALLIZATION SOFTENING BEHAVIOR OF AZ80 MAGNESIUM ALLOY[J]. 金属学报, 2016, 52(9): 1123-1132. [10] SUN Chaoyang, HUANG Jie, GUO Ning, YANG Jing. A PHYSICAL CONSTITUTIVE MODEL FOR Fe-22Mn-0.6C TWIP STEEL BASED ON DISLOCATION DENSITY[J]. 金属学报, 2014, 50(9): 1115-1122. [11] LIU Dingming, ZHANG Bo, WANG Jie, WANG Aimin, WANG Yandong, ZHANG Haifeng, HU Zhuangqi. INFLUENCE OF TEMPERATURE ON QUASI-STATIC MECHANICAL PROPERTIES OF Zr-45Ti-5Al-3V ALLOY[J]. 金属学报, 2014, 50(12): 1498-1504. [12] LIU Yu, LI Yan, LI Qiang. EFFECT OF CATHODIC POLARIZATION ON HYDROGEN EMBRITTLEMENT SUSCEPTIBILITY OF X80 PIPELINE STEEL IN SIMULATED DEEP SEA ENVIRONMENT[J]. 金属学报, 2013, 49(9): 1089-1097. [13] DONG Danyang, LIU Yang, WANG Lei, SU Liangjin. EFFECT OF STRAIN RATE ON DYNAMIC DEFORMATION BEHAVIOR OF DP780 STEEL[J]. 金属学报, 2013, 49(2): 159-166. [14] DONG Danyang, LIU Yang, WANG Lei, YANG Yuling, LI Jinfeng, JIN Mengmeng. EFFECT OF STRAIN RATE ON DYNAMIC DEFORMATION BEHAVIOR OF LASER WELDED DP780 STEEL JOINTS[J]. 金属学报, 2013, 49(12): 1493-1500. [15] ZHANG Bo, FU Huameng, ZHU Zhengwang, ZHANG Haifeng,DONG Chuang,HU Zhuangqi. EFFECT OF W FIBER DIAMETER ON THE COMPRESSIVE MECHANICAL PROPERTIES OF THE Zr-BASED METALLIC GLASS COMPOSITES[J]. 金属学报, 2013, 49(10): 1191-1200. No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed