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Title: A study of stress-induced phase transformation and micromechanical behavior of CuZr-based alloy by in-situ neutron diffraction

Abstract

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 strain-hardening 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 thismore » 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).« less

Authors:
 [1];  [2];  [3];  [3];  [3];  [2];  [2];  [4]; ORCiD logo [3]
  1. Northeastern Univ., Shenyang (China). Key Lab. for Anisotropy and Texture of Materials; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical and Engineering Materials Division
  2. Northeastern Univ., Shenyang (China). Key Lab. for Anisotropy and Texture of Materials
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical and Engineering Materials Division
  4. Chinese Academy of Sciences (CAS), Shenyang (China). Shenyang National Lab. for Materials Science
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1335306
Alternate Identifier(s):
OSTI ID: 1397615
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Alloys and Compounds
Additional Journal Information:
Journal Volume: 696; Journal Issue: C; Journal ID: ISSN 0925-8388
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; In-situ neutron diffraction technique; Macro mechanical behavior; Stress-induced martensitic transformation; Micromechanical behavior; Stress partitioning

Citation Formats

Wang, Dongmei, Mu, Juan, Chen, Yan, Qi, Yuming, Wu, Wei, Wang, Yandong, Xu, Haijian, Zhang, Haifeng, and An, Ke. A study of stress-induced phase transformation and micromechanical behavior of CuZr-based alloy by in-situ neutron diffraction. United States: N. p., 2017. Web. doi:10.1016/j.jallcom.2016.12.020.
Wang, Dongmei, Mu, Juan, Chen, Yan, Qi, Yuming, Wu, Wei, Wang, Yandong, Xu, Haijian, Zhang, Haifeng, & An, Ke. A study of stress-induced phase transformation and micromechanical behavior of CuZr-based alloy by in-situ neutron diffraction. United States. https://doi.org/10.1016/j.jallcom.2016.12.020
Wang, Dongmei, Mu, Juan, Chen, Yan, Qi, Yuming, Wu, Wei, Wang, Yandong, Xu, Haijian, Zhang, Haifeng, and An, Ke. Wed . "A study of stress-induced phase transformation and micromechanical behavior of CuZr-based alloy by in-situ neutron diffraction". United States. https://doi.org/10.1016/j.jallcom.2016.12.020. https://www.osti.gov/servlets/purl/1335306.
@article{osti_1335306,
title = {A study of stress-induced phase transformation and micromechanical behavior of CuZr-based alloy by in-situ neutron diffraction},
author = {Wang, Dongmei and Mu, Juan and Chen, Yan and Qi, Yuming and Wu, Wei and Wang, Yandong and Xu, Haijian and Zhang, Haifeng and An, Ke},
abstractNote = {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 strain-hardening 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).},
doi = {10.1016/j.jallcom.2016.12.020},
journal = {Journal of Alloys and Compounds},
number = C,
volume = 696,
place = {United States},
year = {Wed Mar 01 00:00:00 EST 2017},
month = {Wed Mar 01 00:00:00 EST 2017}
}

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Cited by: 18 works
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