Phase interface-induced dwell fatigue cracks in titanium alloy with lamellar microstructure

doi:10.1007/s40843-023-2641-7

IMR OpenIR

	Phase interface-induced dwell fatigue cracks in titanium alloy with lamellar microstructure
	Zhou, Zhichun 1,2; Jiang, Binbin 1; Qiu, Jianke 2,3; Zhang, Linglei 1,2; Lei, Jiafeng 2,3; Yang, Rui 2,3; Du, Kui 1,2
通讯作者	Jiang, Binbin(bbjiang12s@imr.ac.cn) ; Du, Kui(kuidu@imr.ac.cn)
	2023-10-24
发表期刊	SCIENCE CHINA-MATERIALS
ISSN	2095-8226
页码	8
摘要	Titanium alloys have been widely used in aerospace, energy, chemical and medical industries, especially in aero-engines, attributed to their high specific strength, good fatigue performance and excellent corrosion resistance. However, aero-engine components are usually subjected to dwell fatigue during aircraft operation, which significantly deteriorates the fatigue life and easily threatens aviation safety. Thus it is essential to understand the dwell fatigue behavior of titanium alloys. In this work, the formation mechanism of cracks in titanium alloys with lamellar microstructure has been investigated on low-cycle dwell fatigue. The deformation of alpha and beta laths does not match in colonies, so the dislocation slip of alpha-Ti gives rise to extensive residual dislocation pile-up at alpha/beta interfaces. The local tensile stress generated by residual dislocations is high and thus promotes the formation and coalescence of cavities in colonies, resulting in dwell fatigue cracks. These results provide insights on the formation of cracks in titanium alloy with lamellar microstructure under dwell fatigue, and they also give implications on the cracking of materials with lamellar microstructures in general.
关键词	transmission electron microscopy aberration corrected electron microscopy electron backscatter diffraction titanium alloys dwell fatigue
资助者	This work was supported by the National Natural Science Foundation of China (91960202, 52171020, and 51701219), the CAS Project for Young Scientists in Basic Research (YSBR-025), the Youth Innovation Promotion Association CAS (2022188), and the National Ke ; National Natural Science Foundation of China ; CAS Project for Young Scientists in Basic Research ; Youth Innovation Promotion Association CAS ; National Key R amp; D Program of China
DOI	10.1007/s40843-023-2641-7
收录类别	SCI
语种	英语
资助项目	This work was supported by the National Natural Science Foundation of China (91960202, 52171020, and 51701219), the CAS Project for Young Scientists in Basic Research (YSBR-025), the Youth Innovation Promotion Association CAS (2022188), and the National Ke[91960202] ; This work was supported by the National Natural Science Foundation of China (91960202, 52171020, and 51701219), the CAS Project for Young Scientists in Basic Research (YSBR-025), the Youth Innovation Promotion Association CAS (2022188), and the National Ke[52171020] ; This work was supported by the National Natural Science Foundation of China (91960202, 52171020, and 51701219), the CAS Project for Young Scientists in Basic Research (YSBR-025), the Youth Innovation Promotion Association CAS (2022188), and the National Ke[51701219] ; National Natural Science Foundation of China[YSBR-025] ; CAS Project for Young Scientists in Basic Research[2022188] ; Youth Innovation Promotion Association CAS[2021YFC2800503] ; Youth Innovation Promotion Association CAS[2022YFB3708300] ; National Key R amp; D Program of China
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:001094250500001
出版者	SCIENCE PRESS
引用统计	被引频次：1[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/321006/177669
专题	中国科学院金属研究所
通讯作者	Jiang, Binbin; Du, Kui
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Zhichun,Jiang, Binbin,Qiu, Jianke,et al. Phase interface-induced dwell fatigue cracks in titanium alloy with lamellar microstructure[J]. SCIENCE CHINA-MATERIALS,2023:8.
APA	Zhou, Zhichun.,Jiang, Binbin.,Qiu, Jianke.,Zhang, Linglei.,Lei, Jiafeng.,...&Du, Kui.(2023).Phase interface-induced dwell fatigue cracks in titanium alloy with lamellar microstructure.SCIENCE CHINA-MATERIALS,8.
MLA	Zhou, Zhichun,et al."Phase interface-induced dwell fatigue cracks in titanium alloy with lamellar microstructure".SCIENCE CHINA-MATERIALS (2023):8.