Indentation size effect and strain rate sensitivity of Ni3Ta high temperature shape memory alloy

被引：15
|
作者：
Shuitcev, A. V. [1 ]
Tong, Y. X. [1 ]
Li, L. [1 ]
机构：
[1] Harbin Engn Univ, Coll Mat Sci & Chem Engn, Inst Mat Proc & Intelligent Mfg, Harbin 150001, Heilongjiang, Peoples R China
来源：
VACUUM | 2019年 / 160卷
基金：
中国国家自然科学基金;
关键词：
Ni3Ta; Shape memory alloys; Rate sensitive; Indentation size effect; MARTENSITIC-TRANSFORMATION; ACTIVATION VOLUME; NANOCRYSTALLINE; DEFORMATION; DEPENDENCE; HARDNESS; PRESSURE;
D O I：
10.1016/j.vacuum.2018.11.017
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The present work focuses on mechanical properties of Ni3Ta alloy. Reversible martensitic transformation is found in the temperature range of 520-600 K. At room temperature Ni3Ta alloy mainly consists of a monoclinic phase. Ni3Ta alloy exhibits a forward indentation size effect, the value of load independence hardness is equal to 5.3 GPa. The compressive behavior is dependent on strain rate, which is characterized by small activation volume (6.4 b(3)), corresponding to the grain boundary sliding as the dominant deformation mechanism.
引用
收藏
页码：25 / 30
页数：6
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