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Effects of constitutive parameters on adiabatic shear localization for ductile metal based on JOHNSON-COOK and gradient plasticity models WANG Xue-bin(王学滨) Department of Mechanics... plastic shear deformation between the top and base of ASB depends on the thickness of ASB and the average plastic shear strain. A parametric study was carried out to study the influence of constitutive......
behavior of ZK60 magnesium alloy was investigated at the temperature range from 523 to 673 K and strain rate range from 0.001 to 1 s-1 on Gleeble-1500 thermal simulator. The constitutive equation of hot... temperature and low strain rate, transition stage is not very obvious. The predicted flow stress curves by the developed constitutive equation agree well with the experimental results. Key words: ZK60......
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-09-07 基金项目:国家重点基础研究发展规划资助项目(2006CB705401)；中国博士后科学基金资助项目(20070410302)；中南大学博士后科学基金资助项目(2007年) 通信作者:蔺永诚(1976-),男,湖南浏阳人,博士,副教授,从事材料的高温流变特性及锻造成形工艺数字化仿真研究；电话:0731-8877915；E-mail: yclin@mail.csu.edu.cn ......
ARTICLE J. Cent. South Univ. (2019) 26: 1550-1562 DOI: https://doi.org/10.1007/s11771-019-4111-x Flow behaviour constitutive model of CuCrZr alloy and 35CrMo steel based on dynamic.... Based on the dynamic recrystallization softening effect proposed, the novel elevated temperature flow constitutive models of two different alloys are proposed, and the related parameters are well......
at a temperature of 773 K and a strain rate of 0.001 s-1; the yielding drop phenomenon was discovered. Hyperbolic sine constitutive equation incorporating dislocation variables was presented, and a power law constitutive equation was established. The stress exponent is 3.262, and the activation energy for deformation is 154.465 kJ/mol, indicating that dislocation viscous glide is the dominant deformation......
-casting; rheological behavior; physical simulation; constitutive equation 连续铸轧是一种特殊的金属成形工艺, 连续铸轧过程中金属从熔融状态经两个相向旋转并通有内部循环冷却水的铸轧辊在35~95mm的铸轧区内, 0.1~1.0s左右的时间里面强制冷却而凝固结晶, 最后被轧制成形[1, 2]. 对其变形行为进... and continuous deformation of roll-casting conditions are obtained. Experimental results indicate that four different characteristic stages exist in the whole rheological process, and relative constitutive......
stress; constitutive equation 镁合金由于密度小,比强度,比刚度高,尺寸稳定性和热导率高,机械加工性能好,产品易回收利用,成为21世纪... in 0.01-50 s-1 and deformation temperature ranged in 300-350 ℃. The true stress/true strain curves were obtained in the tests. The flow stress was corrected by the constitutive equations and the constants......
of strain rate upon plastic flow of steel[J]. Journal of Applied Physics, 1944, 15(1): 22-32. Pyroplastic deformation behavior and constitutive equation of Al-Sr alloy WAN Fan, YUN Xin-bing, BI Sheng, PEI... temperature and strain rate on the flow stress and Al4Sr phase of Al-Sr alloy during hot deformation were analyzed, and the constitutive equation of Al-Sr alloy by linear regression analysis......
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