| 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.
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| 2016-10-01
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| 发表期刊 | ACTA MATERIALIA
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| ISSN | 1359-6454
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| 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
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| 关键词 | Crack Deflection
Transformation Toughening
Ti Alloy
Transmission Electron Microscopy
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| 学科领域 | Materials Science, Multidisciplinary
; Metallurgy & Metallurgical Engineering
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| 资助者 | Special Funds for the Major State Basic Research Projects of China [2012CB619503]; Natural Sciences Foundation of China [51390473, 51371177, 11332010]
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| 收录类别 | sci
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| 语种 | 英语
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| WOS记录号 | WOS:000383935800013
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.imr.ac.cn/handle/321006/76250
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| 专题 | 中国科学院金属研究所
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| 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.
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| 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.
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| 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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