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题名: A study of stress-induced phase transformation and micromechanical behavior of CuZr-based alloy by in-situ neutron diffraction
作者: Wang, Dongmei;  Mu, Juan;  Chen, Yan;  Qi, Yuming;  Wu, Wei;  Wang, Yandong;  Xu, Haijian;  Zhang, Haifeng;  An, Ke
发表日期: 2017-3-5
摘要: The stress-induced phase transformation and micromechanical behavior of CuZr-based alloy were investigated by in-situ neutron diffraction. The pseudoelastic behavior with a pronounced strainhardening effect is observed. The retained martensite nuclei and the residual stress obtained from the 1st cycle reduce the stress threshold for the martensitic transformation. A critical stress level is required for the reverse martensitic transformation from martensite to B2 phase. An increase of intensity for the B2 (110) plane in the 1st cycle is caused by the twinning along the {112}< 111> twinning system. The convoluted stress partitioning influenced by the elastic and transformation anisotropy along with the newly formed martensite determines the microstress partitioning of the studied CuZr-based alloy. The reversible martensitic transformation is responsible for the pseudoelasticity. The macro mechanical behavior of the pure B2 phase can be divided into 3 stages, which are mediated by the evolvement of the martensitic transformation. This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U. S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy. gov/downloads/doe-public-access-plan). (C) 2016 Elsevier B. V. All rights reserved.
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Recommended Citation:
Wang, Dongmei,Mu, Juan,Chen, Yan,et al. A Study Of Stress-induced Phase Transformation And Micromechanical Behavior Of Cuzr-based Alloy By In-situ Neutron Diffraction[J]. Journal Of Alloys And Compounds,2017,696:1096-1104.

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