Email this article Constitutive Equation for the Hot Deformation Behavior of TiNiNb Shape Memory Alloy
- Authors: Liu Junwei 1, Shiqiang L.1, Qi Y.2, Zhigang Z.1
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Affiliations:
- School of Material Science and Engineering, Nanchang Hangkong University
- Beijing Spacecraft Manufacturing Factory
- Issue: Vol 120, No 4 (2019)
- Pages: 394-401
- Section: Strength and Plasticity
- URL: https://journals.rcsi.science/0031-918X/article/view/168444
- DOI: https://doi.org/10.1134/S0031918X19040082
- ID: 168444
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Abstract
In this research, hot deformation behavior of NiTiNb alloy was explored. Then, the activation energy and the constitutive equation were evaluated and obtained. The results show that the compressive process of TiNiNb alloy is a typical rheological process. The thermal activation energy of TiNiNb alloy in the temperature range of 720–840°C is 198.004 kJ/mol. Both NiTi matrix phase and Nb solution have been refined. The amounts of (Ti, Nb)2Ni hard brittle phase and Nb solution were gradually reduced with increasing the strain rate and deformation temperature.
About the authors
Liu Junwei
School of Material Science and Engineering, Nanchang Hangkong University
Author for correspondence.
Email: liujw1981@126.com
China, Jiangxi, 330063
Lu Shiqiang
School of Material Science and Engineering, Nanchang Hangkong University
Email: liujw1981@126.com
China, Jiangxi, 330063
Yao Qi
Beijing Spacecraft Manufacturing Factory
Email: liujw1981@126.com
China, Beijing, 100190
Zhao Zhigang
School of Material Science and Engineering, Nanchang Hangkong University
Email: liujw1981@126.com
China, Jiangxi, 330063
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