Constitutive Equation for the Hot Deformation Behavior of TiNiNb Shape Memory Alloy

2019 ◽  
Vol 120 (4) ◽  
pp. 394-401
Author(s):  
Liu Junwei ◽  
Lu Shiqiang ◽  
Yao Qi ◽  
Zhao Zhigang
Keyword(s):  
Constitutive Equation ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Hot Deformation ◽  
Deformation Behavior ◽  
Hot Deformation Behavior

Hot deformation behavior of a CuAlMn shape memory alloy

2020 ◽  
Vol 845 ◽  
pp. 156161
Author(s):  
Pang Yong ◽  
Xiao Zhu ◽  
Jia Yanlin ◽  
Zhang Rui ◽  
Yi Jiang ◽  
...  
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Hot Deformation ◽  
Deformation Behavior ◽  
Hot Deformation Behavior

Study on Hot Deformation Behavior of TiNiFe Shape Memory Alloy

2011 ◽  
Vol 393-395 ◽  
pp. 312-318
Author(s):  
Qiang Liu ◽  
Xiang Qian Yin ◽  
Bo Duan ◽  
Sheng Ying Shong ◽  
Yao Rong Feng
Keyword(s):  
Shape Memory Alloy ◽  
Strain Rate ◽  
Shape Memory ◽  
Hot Deformation ◽  
Deformation Behavior ◽  
Linear Regression Analysis ◽  
Hot Compression ◽  
Hot Deformation Behavior ◽  
Hot Compression Deformation ◽  
Compression Deformation

The hot deformation behavior of TiNiFe shape memory alloy were investigated by isothermal single-pass compression on Gleeble-3500 thermal simulator at the temperature range of 800°C to 1050°C and the strain rate range of 0.01s-1 to 10s-1. The results showed that the true stress-strain curves of TiNiFe shape memory alloy increase with decreasing deformation temperature and increasing strain rate, which indicating that the hot deformations of these conditions are dynamic recrystallization. The hot compression deformation of TiNiFe shape memory alloy can be represented by Arrhenius model. The constitutive equation of TiNiFe shape memory alloy under hot compression deformation is calculated by a linear regression analysis. The activation energy for hot deformation of the experimental steel is 202.54kJ/mol.

Transformation/Deformation Behavior and its Constitutive Equation for Ti-Ni-Cu Shape Memory Alloy

2008 ◽  
Vol 59 ◽  
pp. 129-134
Author(s):  
Yuji Takeda ◽  
Takaei Yamamoto ◽  
M. Uegaki ◽  
Hiroki Cho ◽  
Toshio Sakuma ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Constitutive Equation ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Constitutive Equations ◽  
Deformation Behavior ◽  
Volume Fraction ◽  
Transformation Process ◽  
Reverse Transformation ◽  
Transformation Behavior

This paper describes the transformation and deformation behavior and its constitutive equation for Ti-41.7Ni-8.5Cu (at%) shape memory alloy. Plastic deformation after pre-deformation is investigated using the volume fraction of slip-deformed martensite. New kinetics and constitutive equations are proposed for the reverse transformation process. The material constants in the proposed equationa are determined from the results of tensile and heating/cooling tests of Ti-41.7Ni-8.5Cu (at%) shape memory alloy. The calculated results describe well the deformation and transformation behavior affected by pre-strain.

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