Influence of Pseudoelasticity on Mechanical Behavior of TiNi Alloy under Dynamic Impact Loading  

作　　者：Xu Renbo Cui Lishan Zheng Yanjun Chen Hongling 

机构地区：[1]Department of Materials Science and Engineering, China University of Petroleum, Beijing 102249, China

出　　处：《Petroleum Science》2007年第1期86-89,共4页石油科学（英文版）

摘　　要：The mechanical behavior of TiNi alloy and Cr12MoV alloy under dynamic impact loading was investigated with a self-made impact testing system. The real-time contact force was measured with a piezoelectric force sensor and digital signal processing system during impact. Equations for predicting instantaneous velocity anti displacement were presented. The results showed that the TiNi alloy exhibited a plateau of maximum contact force with increasing impact height. At the plateau stage, TiNi alloy in the parent phase can absorb impact energy and keep the maximum contact force nearly identical due to its pseudoelasticity.The mechanical behavior of TiNi alloy and Cr12MoV alloy under dynamic impact loading was investigated with a self-made impact testing system. The real-time contact force was measured with a piezoelectric force sensor and digital signal processing system during impact. Equations for predicting instantaneous velocity anti displacement were presented. The results showed that the TiNi alloy exhibited a plateau of maximum contact force with increasing impact height. At the plateau stage, TiNi alloy in the parent phase can absorb impact energy and keep the maximum contact force nearly identical due to its pseudoelasticity.

关 键 词：TiNi alloy mechanical behavior contact force impact energy PSEUDOELASTICITY 

分 类 号：TG17[金属学及工艺—金属表面处理]