| In-situ investigation on tensile deformation and fracture behaviors of Ti60 alloy rolled sheet with equiaxed microstructure | |
| Wang, Boning1,3,4; Zeng, Weidong1,3,4; Zhao, Zibo2; Jia, Runchen1,3,4; Xu, Jianwei1,3,4; Wang, Qingjiang2 | |
| Corresponding Author | Zeng, Weidong(zengwd@nwpu.edu.cn) ; Zhao, Zibo(zbzhao@imr.ac.cn) |
| 2022-11-25 | |
| Source Publication | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| ISSN | 0925-8388 |
| Volume | 923Pages:13 |
| Abstract | In this work, the deformation mechanism and fracture behavior of Ti60 alloy sheet with equiaxed micro-structure (the volume fraction of equiaxed alpha grains is 68%) using the in-situ tensile test were studied by in -situ scanning electron microscope (SEM) and electron backscattering diffraction (EBSD). The results show that equiaxed alpha grains activate three coordinated deformation mechanisms, mainly single slip mode, supplemented by slip transfer and grain rotation. The alloy is mainly coordinated by equiaxed alpha grain de-formation, dominated by prismatic < a > and basal < a > slip, and prismatic slip in (1010) plane and [1210] direction as the most active slip system. With the increase of deformation, the soft oriented equiaxed alpha grains preferentially occur prismatic slip, while some hard oriented grains rotate in the direction favorable to slip. When there is no slip transfer between adjacent grains, dislocation pile-up at the grain boundary and causes stress concentration, which makes the grain boundary easy to become the crack nucleation point. In SEM and EBSD studies, lamellar alpha grains have no obvious deformation characteristics. However, TEM study found that some lamellar alpha grains were kinked, which led to lamellar fracture and the formation of high-density dislocation areas around them. Meanwhile, due to the large difference in coordinated deformation ability between equiaxed alpha grains and lamellar alpha grains and between equiaxed alpha hard and soft oriented grains. Therefore, cracks are initiated, propagated and fractured mainly at the junction of the alpha colony composed of lamellar alpha grains and at the equiaxed alpha grain boundary.(c) 2022 Elsevier B.V. All rights reserved. |
| Keyword | Ti60 alloy In -situ tensile Equiaxed ? grain Crack propagation Coordinated deformation |
| Funding Organization | National Major Science and Technology Project ; National Natural Science Foundation of China |
| DOI | 10.1016/j.jallcom.2022.166464 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Major Science and Technology Project ; National Natural Science Foundation of China ; [J2019 -VI -0005-0119] ; [51905436] |
| WOS Research Area | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000862938400002 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/175996 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zeng, Weidong; Zhao, Zibo |
| Affiliation | 1.Northwestern Polytech Univ, Sch Mat Sci & Engn, State Key Lab Solidificat Proc, Xian 710072, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.Northwestern Polytech Univ, Def Technol Innovat Ctr Precis Forging & Ring roll, Sch Mat Sci & Engn, Xian 710072, Peoples R China 4.Northwestern Polytech Univ, Shaanxi Key Lab High Performance Precis Forming Te, Xian 710072, Peoples R China |
| Recommended Citation GB/T 7714 | Wang, Boning,Zeng, Weidong,Zhao, Zibo,et al. In-situ investigation on tensile deformation and fracture behaviors of Ti60 alloy rolled sheet with equiaxed microstructure[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2022,923:13. |
| APA | Wang, Boning,Zeng, Weidong,Zhao, Zibo,Jia, Runchen,Xu, Jianwei,&Wang, Qingjiang.(2022).In-situ investigation on tensile deformation and fracture behaviors of Ti60 alloy rolled sheet with equiaxed microstructure.JOURNAL OF ALLOYS AND COMPOUNDS,923,13. |
| MLA | Wang, Boning,et al."In-situ investigation on tensile deformation and fracture behaviors of Ti60 alloy rolled sheet with equiaxed microstructure".JOURNAL OF ALLOYS AND COMPOUNDS 923(2022):13. |
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