Electron Irradiation Induced Multistage Martensitic Transformation in Ti‐Rich Ti−Ni Alloy,Crystal Research and Technology

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Electron Irradiation Induced Multistage Martensitic Transformation in Ti‐Rich Ti−Ni Alloy
Crystal Research and Technology ( IF 1.5 ) Pub Date : 2020-06-22 , DOI: 10.1002/crat.202000035
Yundong Zhao ₁ , Rui Ning ₁ , Zhiyong Gao ₁ , Haizhen Wang ₂ , Wei Cai ₁

Affiliation

This paper focuses on the microstructure and martensitic transformation of titanium−nickel (Ti−Ni) alloys under electron irradiation. There is no observable change of the microstructure after irradiation. Abnormal multistage martensitic transformations are observed in Ti‐rich Ti‐48 at % Ni alloys after electron irradiation. The three‐stage reverse martensitic transformation can be achieved in the irradiated alloy, while unirradiated counterpart displays normal one‐stage transformation during heating processes. The abnormal reverse martensitic transformation behavior caused by electron irradiation is due to the local stress field and the excessive defect concentration. The martensitic transformation behavior and temperature after annealing at 250 °C are consistent with the unirradiated counterpart. Additionally, the irradiated alloy exhibits superior thermal cycle stability to unirradiated samples.

中文翻译：

Ti富Ti-Ni合金中电子辐照引起的多相马氏体转变

本文重点研究了钛镍（Ti-Ni）合金在电子辐照下的组织和马氏体转变。辐照后没有观察到微观结构的变化。在电子辐照后，富钛Ti-48 at Ni含量为％的合金中观察到异常的多级马氏体相变。在辐照合金中可以实现三阶段逆马氏体相变，而未辐照马氏体在加热过程中显示出正常的一阶段相变。由电子辐照引起的反马氏体反常转变行为是由于局部应力场和过多的缺陷浓度引起的。250℃退火后的马氏体相变行为和温度与未辐照的相一致。另外，

更新日期：2020-08-14

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