| In situ scanning and transmission electron microscopy investigation on plastic deformation in a metastable beta titanium alloy | |
| Yao, Tingting; Du, Kui; Wang, Haoliang; Huang, Zhiye; Li, Cuihong; Li, Linlin; Hao, Yulin; Yang, Rui; Ye, Hengqiang; Du, K (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China. | |
| 2017-07-01 | |
| Source Publication | PERGAMON-ELSEVIER SCIENCE LTD
 |
| ISSN | 1359-6454 |
| Volume | 133Pages:21-29 |
| Abstract | Martensitic transformation and deformation twinning are investigated in Ti-24Nb-4Zr-8Sn (wt. %) alloy with in situ tensile deformation in scanning and transmission electron microscopes. Deformation induced beta to alpha'' martensitic transformation occurs at a stress plateau stage of similar to 200 MPa and deformation twinning takes place subsequently at later strain hardening stage. In situ transmission electron microscopy observations combined with finite element method calculation reveal that three deformation mechanisms, alpha'' martensitic transformation, {112}< 111 >beta deformation twinning and kinks of alpha" lamellae, are activated with the increase of applied stress/strain. Among them, deformation-induced 13 to a" phase transformation dominates the early-stage deformation. As the stress increasing, {112}< 111 >beta deformation twinning is activated and becomes the dominating deformation mechanism afterward. Interactions between dislocation slips and martensite/twin lamellae are likely responsible for the strain hardening. After the deformation over the ultimate tensile strength, slip bands initiate and become the major deformation mechanism during necking until fracture. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.; Martensitic transformation and deformation twinning are investigated in Ti-24Nb-4Zr-8Sn (wt. %) alloy with in situ tensile deformation in scanning and transmission electron microscopes. Deformation induced beta to alpha'' martensitic transformation occurs at a stress plateau stage of similar to 200 MPa and deformation twinning takes place subsequently at later strain hardening stage. In situ transmission electron microscopy observations combined with finite element method calculation reveal that three deformation mechanisms, alpha'' martensitic transformation, {112}< 111 >beta deformation twinning and kinks of alpha" lamellae, are activated with the increase of applied stress/strain. Among them, deformation-induced 13 to a" phase transformation dominates the early-stage deformation. As the stress increasing, {112}< 111 >beta deformation twinning is activated and becomes the dominating deformation mechanism afterward. Interactions between dislocation slips and martensite/twin lamellae are likely responsible for the strain hardening. After the deformation over the ultimate tensile strength, slip bands initiate and become the major deformation mechanism during necking until fracture. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| description.department | [yao, tingting ; du, kui ; wang, haoliang ; huang, zhiye ; li, cuihong ; li, linlin ; hao, yulin ; yang, rui ; ye, hengqiang] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, liaoning, peoples r china |
| Keyword | In Situ Tem Titanium Alloys Deformation Twinning Martensitic Transformation Deformation Mechanism Strain Hardening |
| Subject Area | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| Funding Organization | National Natural Science Foundation of China [51390473, 51371177, 51571190, 51271180] |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000407413100003 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/79178 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Du, K (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China. |
| Recommended Citation GB/T 7714 | Yao, Tingting,Du, Kui,Wang, Haoliang,et al. In situ scanning and transmission electron microscopy investigation on plastic deformation in a metastable beta titanium alloy[J]. PERGAMON-ELSEVIER SCIENCE LTD,2017,133:21-29. |
| APA | Yao, Tingting.,Du, Kui.,Wang, Haoliang.,Huang, Zhiye.,Li, Cuihong.,...&Du, K .(2017).In situ scanning and transmission electron microscopy investigation on plastic deformation in a metastable beta titanium alloy.PERGAMON-ELSEVIER SCIENCE LTD,133,21-29. |
| MLA | Yao, Tingting,et al."In situ scanning and transmission electron microscopy investigation on plastic deformation in a metastable beta titanium alloy".PERGAMON-ELSEVIER SCIENCE LTD 133(2017):21-29. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment