Effect of Al content on the fracture toughness and deformation behavior of Ti-Al binary alloys

doi:10.1016/j.msea.2024.146914

IMR OpenIR

	Effect of Al content on the fracture toughness and deformation behavior of Ti-Al binary alloys
	Weng, Hanbo 1,2; Wang, Qian 2; Ma, Yingjie 1,2,3; Xu, Daokui 4; Huang, Sensen 2; Qi, Min 2; Qiu, Jianke 1,2; Lei, Jiafeng 1,2; Yang, Rui 1,2
通讯作者	Ma, Yingjie(yjma@imr.ac.cn) ; Xu, Daokui(dkxu@imr.ac.cn)
	2024-09-01
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	911 页码:15
摘要	The fracture toughness and deformation behavior of Ti- x Al ( x = 0, 2, 4 wt%) binary alloys were investigated. The non-thickness-dependent fracture toughness was measured based on the J-integral multiple-sample approach. Increased Al content induced reduced fracture toughness from 265 to 148 MPa & sdot; m 1/2 of Ti- x Al alloys. The fracture toughness was discussed in this article by the mutual influence of the elastic component ( J el ) and the plastic component ( J pl ). The solid solution strengthening effect of Al was identified as the primary factor contributing to the increase in J el . Additionally, the evolution mechanism of J pl with varying Al content was elucidated by slip modes, twin activation, and dislocation configurations at the crack tip. Prismatic slip was found to be the predominant slip mode in Ti- x Al alloys. With the increase in Al content, the elevated critical resolved shear stress associated with prismatic slip hindered the alleviation of stress concentration, resulting in a decrease in J pl . The increase in content of Al in the Ti- x Al alloys inhibited the formation of {11 2 2} twins. Compared to Ti-0Al and Ti-2Al alloys, a significant increase in c c a dislocations, which potentially resulted in a reduction in J(pl) . Furthermore, a crack tip stress analysis method based on twin variant activation was proposed. In Ti-0Al and Ti-2Al alloys, twins activated by internal stress were more pronounced compared to the Ti-4Al alloy. The internal stress may be composed of back stresses, which are generated by twinning activation.
关键词	Ti-xAl alloys Al content Fracture toughness J-integral Deformation behavior
资助者	National Key Research and Development Program of China ; Natural Science Foundation of China ; CAS Project for Young Scientists in Basic Research ; Youth Innovation Promotion Association CAS ; Liaoning Provincial Natural Science Foundation of China
DOI	10.1016/j.msea.2024.146914
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2021YFC2801801] ; Natural Science Foundation of China[U2106215] ; CAS Project for Young Scientists in Basic Research[YSBR-025] ; Youth Innovation Promotion Association CAS ; Liaoning Provincial Natural Science Foundation of China[2023 -BS-018]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001272362100001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/188330
专题	中国科学院金属研究所
通讯作者	Ma, Yingjie; Xu, Daokui
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Wenhua Rd 72, Shenyang 110016, Peoples R China 4.Chinese Acad Sci, Key Lab Nucl Mat & Safety Assessment, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Weng, Hanbo,Wang, Qian,Ma, Yingjie,et al. Effect of Al content on the fracture toughness and deformation behavior of Ti-Al binary alloys[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2024,911:15.
APA	Weng, Hanbo.,Wang, Qian.,Ma, Yingjie.,Xu, Daokui.,Huang, Sensen.,...&Yang, Rui.(2024).Effect of Al content on the fracture toughness and deformation behavior of Ti-Al binary alloys.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,911,15.
MLA	Weng, Hanbo,et al."Effect of Al content on the fracture toughness and deformation behavior of Ti-Al binary alloys".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 911(2024):15.