{101¯2} twinning induced by the interaction between {112¯1} twin and β phase in α+β Ti alloys

doi:10.1016/j.actamat.2022.117900

	{101¯2} twinning induced by the interaction between {112¯1} twin and β phase in α+β Ti alloys
	Zheng, Xiaodong 1,2; Liu, Guisen 4; Zheng, Shijian 1,2; Ma, Yingjie 3; Yang, Rui 3; Wang, Jian 5; Ma, Xiuliang2,6
	2022-06-01
发表期刊	Acta Materialia
ISSN	1359-6454
卷号	231
摘要	Severe plastic deformation induces numerous deformation twins in fully lamellar α+β Ti alloys. Interaction between deformation twins and β phase brings a strong strengthening effect, however, the twinning transfer mechanism across α/β interface is still unclear. In this work, we report the interaction behavior and transfer mechanism of {112¯1} twin across α/β interface. Different from the common case that twinning strain transferred by plastic deformation of β phase, the interaction between {112¯1} twin and β phase induces {101¯2} twinning around the interaction area and the β phase is free of plastic deformation. Experiments show that {101¯2} twins will nucleate in four quadrants of the intersection between {112¯1} twin and β phase when the β phase is thicker, whereas {101¯2} twins will only nucleate in one pair of diagonal quadrants of the intersection when the β phase is thinner. The reason is that the strain field around the intersection between {112¯1} twin and β phase is correlated with the thickness of β phase, which ultimately determines where {101¯2} twins nucleate. Moreover, transmission electron microscopy (TEM) investigations reveal that the β phase will block the motivation of {112¯1} twinning dislocation bt{112¯1}. In this situation, the twinning transfer of {112¯1} twin through the β phase is accomplished with the help of elastic deformation of β phase and nucleation of sequential {101¯2} twins. The {101¯2} twinning is facilitated by the dissociation of bt{112¯1} dislocations at the α/β interface promoted by the {112¯1} twinning shear stress field at the interaction area. © 2022
关键词	Plastic deformation Shear stress Titanium alloys Deformation twin Fully lamellar Interaction area Severe plastic deformations Strengthening effect Ti alloys Transfer mechanisms {101¯2} twin {112¯1} twin β Ti alloy
DOI	10.1016/j.actamat.2022.117900
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000793420000004
出版者	Acta Materialia Inc
EI入藏号	20221511940668
EI主题词	High resolution transmission electron microscopy
EI分类号	542.3 Titanium and Alloys ; 741.3 Optical Devices and Systems
来源库	WOS
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/157871
专题	材料科学与工程学院_特聘教授组
通讯作者	Zheng, Shijian; Ma, Yingjie
作者单位	1.Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin Key Lab Mat Laminating Fabricat & Interfa, Tianjin 300130, Peoples R China; 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China; 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China; 4.Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China; 5.Univ Nebraska, Mech & Mat Engn, Lincoln, NE 68588 USA; 6.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Zheng, Xiaodong,Liu, Guisen,Zheng, Shijian,et al. {101¯2} twinning induced by the interaction between {112¯1} twin and β phase in α+β Ti alloys[J]. Acta Materialia,2022,231.
APA	Zheng, Xiaodong.,Liu, Guisen.,Zheng, Shijian.,Ma, Yingjie.,Yang, Rui.,...&Ma, Xiuliang.(2022).{101¯2} twinning induced by the interaction between {112¯1} twin and β phase in α+β Ti alloys.Acta Materialia,231.
MLA	Zheng, Xiaodong,et al."{101¯2} twinning induced by the interaction between {112¯1} twin and β phase in α+β Ti alloys".Acta Materialia 231(2022).