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Transformation induced crack deflection in a metastable titanium alloy and implications on transformation toughening
Song, M; He, SY; Du, K; Huang, ZY; Yao, TT; Hao, YL; Li, SJ; Yang, R; Ye, HQ; Du, K (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.
2016-10-01
发表期刊ACTA MATERIALIA
ISSN1359-6454
卷号118页码:120-128
摘要The deflection of cracks in grain interior was observed in a metastable beta-phase Ti alloy (Ti-24Nb-4Zr-7.9Sn) with transmission electron microscopy during high cycle fatigue. This peculiar phenomenon is induced by the beta -> alpha" martensitic transformation in front of crack tips in grain interior when cracks propagate along the {011}(beta) slip planes with acute angles between alpha" lamellae and cracks approximately of 45 degrees. The alpha" product phase has lattice dilation and contraction along two main transformation directions, thus introduces compressive and tensile strains perpendicular and parallel to crack propagating planes, respectively. This exerts beneficial effect on the crack deflection during the subsequent cyclic loading. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
部门归属[song, m. ; he, s. y. ; du, k. ; huang, z. y. ; yao, t. t. ; hao, y. l. ; li, s. j. ; yang, r. ; ye, h. q.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china
关键词Crack Deflection Transformation Toughening Ti Alloy Transmission Electron Microscopy
学科领域Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
资助者Special Funds for the Major State Basic Research Projects of China [2012CB619503]; Natural Sciences Foundation of China [51390473, 51371177, 11332010]
收录类别sci
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/76250
专题中国科学院金属研究所
通讯作者Du, K (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.
推荐引用方式
GB/T 7714
Song, M,He, SY,Du, K,et al. Transformation induced crack deflection in a metastable titanium alloy and implications on transformation toughening[J]. ACTA MATERIALIA,2016,118:120-128.
APA Song, M.,He, SY.,Du, K.,Huang, ZY.,Yao, TT.,...&Du, K .(2016).Transformation induced crack deflection in a metastable titanium alloy and implications on transformation toughening.ACTA MATERIALIA,118,120-128.
MLA Song, M,et al."Transformation induced crack deflection in a metastable titanium alloy and implications on transformation toughening".ACTA MATERIALIA 118(2016):120-128.
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