Understanding the dwell-fatigue-damage mechanism of powder metallurgy Ti-6Al-4V alloys fabricated by hot isostatic pressing

doi:10.1016/j.msea.2023.145503

IMR OpenIR

	Understanding the dwell-fatigue-damage mechanism of powder metallurgy Ti-6Al-4V alloys fabricated by hot isostatic pressing
	Huo, Yaoxin 1; Lu, Zhengguan 2; Cheng, Min 1; Fan, Jinping 1; Qiao, Junwei 1; Xu, Lei 2; Guo, Ruipeng 1; Yang, Rui 2; Liaw, P. K.3
通讯作者	Cheng, Min(chengmin@tyut.edu.cn) ; Xu, Lei(lxu@imr.ac.cn) ; Guo, Ruipeng(grp88620@163.com)
	2023-09-06
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	883 页码:9
摘要	Dwell fatigue of titanium alloys used in aeroengine industry has threatened the reliability of aircraft for decades. Powder metallurgy (PM) through hot isostatic pressing (HIP) can fabricate titanium-alloy components with complex structures, and the mechanical properties are close to wrought alloys. Unfortunately, the dwell-fatigue behavior of the as-HIPed titanium-alloy powder components has not been reported in previous studies. The present work firstly investigated the effects of the peak stress (sigma p) and stress ratio (R) on the dwell-fatigue behavior and damage mechanism of the as-HIPed Ti-6Al-4V powder compact. With increasing sigma p, the dwell fatigue lives (NLCDF) decrease, but the dwell debit increases. The lowest NLCDF has been obtained at R = 0.1. With increasing R, the fatigue behavior of dwell fatigue is approaching to creep fatigue. When R is negative, the introduction of a lower reverse stress reduces the cumulated max plastic strain, resulting in the increment of NLCDF. Moreover, a crack-initiation and propagation model based on soft-hard grain pairs has been proposed to describe the dwell-fatigue mechanism. In addition, the dwell debit of PM Ti-6Al-4V alloys is similar to or even lower than that of wrought alloys. Improving the microstructure homogeneity of the material may be the key to further reducing the dwell effect.
关键词	Titanium alloys Dwell effect Fatigue damage Powder metallurgy Hot isostatic pressing
资助者	National Natural Science Foundation of China ; Natural Science Foundation of Shanxi Province, China ; CAS Project for Young Scientists in Basic Research ; National Science Foundation
DOI	10.1016/j.msea.2023.145503
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52205407] ; Natural Science Foundation of Shanxi Province, China[202203021221072] ; Natural Science Foundation of Shanxi Province, China[202203021212237] ; CAS Project for Young Scientists in Basic Research[YSBR-025] ; National Science Foundation[DMR-1611180] ; National Science Foundation[1809640] ; National Science Foundation[2226508]
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:001090622300001
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/321006/177931
专题	中国科学院金属研究所
通讯作者	Cheng, Min; Xu, Lei; Guo, Ruipeng
作者单位	1.Taiyuan Univ Technol, Coll Mat Sci & Engn, Taiyuan 030024, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA
推荐引用方式 GB/T 7714	Huo, Yaoxin,Lu, Zhengguan,Cheng, Min,et al. Understanding the dwell-fatigue-damage mechanism of powder metallurgy Ti-6Al-4V alloys fabricated by hot isostatic pressing[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2023,883:9.
APA	Huo, Yaoxin.,Lu, Zhengguan.,Cheng, Min.,Fan, Jinping.,Qiao, Junwei.,...&Liaw, P. K..(2023).Understanding the dwell-fatigue-damage mechanism of powder metallurgy Ti-6Al-4V alloys fabricated by hot isostatic pressing.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,883,9.
MLA	Huo, Yaoxin,et al."Understanding the dwell-fatigue-damage mechanism of powder metallurgy Ti-6Al-4V alloys fabricated by hot isostatic pressing".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 883(2023):9.