Effect of Pulse Current on Tensile Deformation Behavior of IN718 Alloy
The pulse current was performed on the IN718 alloy during tensile test at room temperature and elevated temperature in the present study.The effect of pulse current on the deformation behavior of the alloy and the mechanisms were investigated.The results show that the deformation resistance decreases and the elongation increases significantly of the alloy during tensile test at room temperature and 1073 K with the increase of pulse current.And as the pulse current energy increases,the effect of pulse current on the strength and plasticity of the alloy increases.The electroplastic effect of pulse current can promote the dislocation motion,and thus decrease the deformation resistance of the alloy during the tensile deformation.The pulse current reduces the starting temperature of recrystallization,promotes the recrystalllization nucleation,and thus makes it possible that the dynamic recrystallization would occur at lower temperature than that in the conventional temperature field.This is the main reason for the decrease of deformation resistance and the increase of plastic deformation ability of IN718 alloy under pulse current.
IN718 alloy Pulse current Electroplastic Deformation resistance Dynamic recrystallization
Yang Liu Lei Wang Fei Feng Xudong Lu Beijiang Zhang
Key Laboratory for Anisotropy and Texture of Materials,Northeastern University,Shenyang 110819,China Department of High-temperature Materials,Central Iron and Steel Research Institute,Beijing 100081,Ch
国际会议
The 6th Cross-Strait Conference on Advanced Engineering Materials (第六届海峡两岸工程材料研讨会)
南京
英文
56-63
2011-11-08（万方平台首次上网日期，不代表论文的发表时间）