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Significant contribution of stacking faults to the strain hardening behavior of Cu-15%Al alloy with different grain sizes
Tian, Y. Z.; Zhao, L. J.; Chen, S.; Shibata, A.; Zhang, Z. F.; Tsuji, N.; yztian@imr.ac.cn; nobuhiro-tsuji@mtl.kyoto-u.ac.jp
2015
Source PublicationSCIENTIFIC REPORTS
ISSN2045-2322
Volume5Pages:-
AbstractIt is commonly accepted that twinning can induce an increase of strain-hardening rate during the tensile process of face-centered cubic (FCC) metals and alloys with low stacking fault energy (SFE). In this study, we explored the grain size effect on the strain-hardening behavior of a Cu-15 at.%Al alloy with low SFE. Instead of twinning, we detected a significant contribution of stacking faults (SFs) irrespective of the grain size even in the initial stage of tensile process. In contrast, twinning was more sensitive to the grain size, and the onset of deformation twins might be postponed to a higher strain with increasing the grain size. In the Cu-15 at.%Al alloy with a mean grain size of 47 mu m, there was a stage where the strain- hardening rate increases with strain, and this was mainly induced by the SFs instead of twinning. Thus in parallel with the TWIP effect, we proposed that SFs also contribute significantly to the plasticity of FCC alloys with low SFE.
description.department[tian, y. z. ; zhang, z. f.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china ; [tian, y. z. ; zhao, l. j. ; chen, s. ; shibata, a. ; tsuji, n.] kyoto univ, dept mat sci & engn, sakyo ku, kyoto 6068501, japan ; [tian, y. z. ; shibata, a. ; tsuji, n.] kyoto univ, esism, sakyo ku, kyoto 6068501, japan
Funding OrganizationIMR foundation; National Natural Science Foundation of China (NSFC) [51331007]; Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan [2201, 24246114]; Elements Strategy Initiative for Structural Materials (ESISM), through the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/75116
Collection中国科学院金属研究所
Corresponding Authoryztian@imr.ac.cn; nobuhiro-tsuji@mtl.kyoto-u.ac.jp
Recommended Citation
GB/T 7714
Tian, Y. Z.,Zhao, L. J.,Chen, S.,et al. Significant contribution of stacking faults to the strain hardening behavior of Cu-15%Al alloy with different grain sizes[J]. SCIENTIFIC REPORTS,2015,5:-.
APA Tian, Y. Z..,Zhao, L. J..,Chen, S..,Shibata, A..,Zhang, Z. F..,...&nobuhiro-tsuji@mtl.kyoto-u.ac.jp.(2015).Significant contribution of stacking faults to the strain hardening behavior of Cu-15%Al alloy with different grain sizes.SCIENTIFIC REPORTS,5,-.
MLA Tian, Y. Z.,et al."Significant contribution of stacking faults to the strain hardening behavior of Cu-15%Al alloy with different grain sizes".SCIENTIFIC REPORTS 5(2015):-.
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