Prediction of high temperature flow stress for AISI 4120 steel during hot compression
To investigate the hot deformation behaviors of AISI 4120 steel,isothermal compression tests were conducted using Gleeble-1500 thermal-mechanical simulator in the temperature range of 1073-1373K with the strain rate of 0.01-10s-1.The hyperbolic sine law in Arrhenius type is used in the constitutive modeling for AISI 4120.The influence of strain is incorporated in constitutive analysis by considering the effect of strain on material constants α,n,Q and In A.The flow stress values predicted by the developed constitutive equations show a good agreement with experimental results,which reveals that the developed constitutive equations could give an accurate and precise prediction for the high temperature flow behaviors of AISI 4120 steel.The predictability of developed constitutive equation was further quantified in terms of correlation coefficient (R) and average absolute relative error (AARE).The R and AARE were found to be 0.9847 and 8.0372% respectively,which reflects the good prediction capabilities of the developed constitutive equation.
AISI 4120 steel Hot compression Constitutive equation Flow stress prediction
Mingping Zou Wujiao Xu Pengcheng Wang
College of Material Science and Engineering,Chongqing University,Chongqing 400044,China
国际会议
重庆
英文
339-342
2012-11-10（万方平台首次上网日期，不代表论文的发表时间）