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Title: Influence of Sn on Martensitic Beta Ti Alloys

Abstract

The influence of Sn composition in Ti-17 at.% Nb alloys is studied by cyclic tension and in-situ synchrotron X-ray diffraction. It is essentially found that Sn stabilizes β-phase and effectively suppresses the formation of ω-phase. Along with β-phase stability, we detect lowering of the austenite and martensite transformation temperature by ~ 100 K/at.% and 88 K/at.%, respectively. Increasing Sn decreases the martensitic transformation strain in Ti-Nb alloys by ~ 1.4%/at.%, larger than that in Ti-Zr-Nb-Sn systems. The influence of Sn in martensitic Ti is anisotropic: causing larger reduction in lattice parameter b and higher decreases in elastic moduli of grain families that are aligned close to the b-axis. Lastly, a {013} α'', {031} α'',{122} α'' and {211} α'' quadruple texture was observed in martensitic Ti wire. At the early stage of deformation, detwinning quickly rotated {013} α'' and (211} α'', towards {031} α'' and {122} α'' components. After that, the strength of {031} α'' continued to increase, while the strength of {122} α'' texture was gradually decreased by dislocation slip as deformation continued.

Authors:
ORCiD logo [1];  [2];  [1]; ORCiD logo [3];  [4]
  1. Fort Wayne Metals Research Products Corp., Fort Wayne, IN (United States)
  2. Beijing Inst. of Technology, Beijing (China)
  3. Northeastern Univ., Shengyang (China). Key Lab. of Electromagnetic Processing of Materials (Ministry of Education)
  4. Argonne National Laboratory (ANL), Lemont, IL (United States)
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Lemont, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1503591
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing
Additional Journal Information:
Journal Volume: 743; Journal Issue: C; Journal ID: ISSN 0921-5093
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; detwinning; martensitic Ti; phase transformation; synchrotron; texture

Citation Formats

Cai, Song, Wang, L., Schaffer, J. E., Gao, J., and Ren, Y. Influence of Sn on Martensitic Beta Ti Alloys. United States: N. p., 2018. Web. doi:10.1016/j.msea.2018.11.095.
Cai, Song, Wang, L., Schaffer, J. E., Gao, J., & Ren, Y. Influence of Sn on Martensitic Beta Ti Alloys. United States. doi:10.1016/j.msea.2018.11.095.
Cai, Song, Wang, L., Schaffer, J. E., Gao, J., and Ren, Y. Thu . "Influence of Sn on Martensitic Beta Ti Alloys". United States. doi:10.1016/j.msea.2018.11.095.
@article{osti_1503591,
title = {Influence of Sn on Martensitic Beta Ti Alloys},
author = {Cai, Song and Wang, L. and Schaffer, J. E. and Gao, J. and Ren, Y.},
abstractNote = {The influence of Sn composition in Ti-17 at.% Nb alloys is studied by cyclic tension and in-situ synchrotron X-ray diffraction. It is essentially found that Sn stabilizes β-phase and effectively suppresses the formation of ω-phase. Along with β-phase stability, we detect lowering of the austenite and martensite transformation temperature by ~ 100 K/at.% and 88 K/at.%, respectively. Increasing Sn decreases the martensitic transformation strain in Ti-Nb alloys by ~ 1.4%/at.%, larger than that in Ti-Zr-Nb-Sn systems. The influence of Sn in martensitic Ti is anisotropic: causing larger reduction in lattice parameter b and higher decreases in elastic moduli of grain families that are aligned close to the b-axis. Lastly, a {013}α'', {031}α'',{122}α'' and {211}α'' quadruple texture was observed in martensitic Ti wire. At the early stage of deformation, detwinning quickly rotated {013}α'' and (211}α'', towards {031}α'' and {122}α'' components. After that, the strength of {031}α'' continued to increase, while the strength of {122}α'' texture was gradually decreased by dislocation slip as deformation continued.},
doi = {10.1016/j.msea.2018.11.095},
journal = {Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing},
issn = {0921-5093},
number = C,
volume = 743,
place = {United States},
year = {2018},
month = {11}
}

Journal Article:
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This content will become publicly available on November 22, 2019
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