外加载荷对热弹性马氏体正-逆相变影响机制的相场模拟研究

doi:10.11896/cldb.22070156

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Abstract A new phase field model of reverse martensitic transformation was established in this study. Taking Cu-Al-Ni alloy as an example, the evolution law of thermoelastic martensitic transformation and reverse martensitic transformation was studied, and the shape memory effect of thermoelastic martensitic was revealed. The effect of the mechanism of tensile release of elastic strain energy on the thermoelastic martensitic transformation and thermoelastic reverse martensitic transformation was simulated, and the effect of applied load on the temperature As of reverse martensitic phase transformation was investigated. The simulation results show that the strain energy is the resistance to the martensitic transformation of the shape memory alloy and the driving force for reverse martensitic transformation. In the process of martensitic transformation, the tensile load releases the strain energy and reduces the resistance to martensitic transformation, thus promoting the martensitic transformation. In the process of reverse martensitic transformation, since the tensile load reduces the strain energy stored in the martensitic transformation, it reduces the driving force of the reverse martensitic transformation process and increases the alloy reverse martensitic transformation temperature As, which in turn increases the stability of thermoelastic martensite at low temperatures. The simulation results are consistent with the experimental results.

Key words： phase field simulation elastic strain energy Cu-Al-Ni alloy reverse martensitic transformation the starting temperature of reverse martensitic transformation

Published: 25 April 2024 Online: 2024-04-28

CLC number:

TG146

Fund:Tianchi Program for High-level Talents of Xinjiang Uygur Autonomous Region (100400028),the Ph.D. Start-up Fund of Xinjiang University (620320011).

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	WANG Lihong
	MAN Jiao
	JIANG Yiming
	LIU Genggen
	ZHOU Jianping

Cite this article:

WANG Lihong,MAN Jiao,JIANG Yiming, et al. Phase Field Study of the Effect of External Loading on the Transformation- Reverse Transformation of Thermoelastic Martensite[J]. Materials Reports, 2024, 38(8): 22070156-7.

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https://www.mater-rep.com/EN/10.11896/cldb.22070156 OR https://www.mater-rep.com/EN/Y2024/V38/I8/22070156

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