A mechanistic study for the fracture mode and ductility variation in a powder metallurgy superalloy hot-isostatic-pressed at sub- and super-solvus temperatures

doi:10.1016/j.msea.2018.11.144

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	A mechanistic study for the fracture mode and ductility variation in a powder metallurgy superalloy hot-isostatic-pressed at sub- and super-solvus temperatures
	Chang, Litao 1,3; Jin, Hao 2,4
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2019-01-16
卷号	743 页码:733-740
关键词	Superalloy Hot-isostatic-press gamma '-phase Prior particle boundaries Strain localization EBSD
ISSN号	0921-5093
DOI	10.1016/j.msea.2018.11.144
通讯作者	Chang, Litao(litao.chang@manchester.ac.uk)
英文摘要	The mechanisms responsible for tensile fracture mode and ductility variation in a powder metallurgy superalloy hot-isostatic-pressed (HIPed) at near gamma'-solvus temperatures have been studied. The presence of deformed structure, decoration of precipitates along the prior particle boundaries and the duplex grain structure were identified as the microstructural features responsible for the inter-particle dominant fracture and low ductility of the sub-solvus HIPed material. They led to strain localization near the prior particle boundaries and crack initiation along them, which were decorated with precipitates and provided easy propagation paths for cracks. Whilst the increased grain size, increased grain size uniformity as well as unpinning of the prior particles boundaries precipitates, were identified as the factors contributing to the high ductility of the super-solvus HIPed material, which featured a more transgranular dominant fracture. The results presented also provide new insights in improving the processing of this type of materials.
资助项目	Xi'an University of Technology, China[101-451115005]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000456891500082
资助机构	Xi'an University of Technology, China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/131653]
专题	金属研究所_中国科学院金属研究所
通讯作者	Chang, Litao
作者单位	1.Univ Manchester, Mat Performance Ctr, Manchester M13 9PL, Lancs, England 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 3.Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Shaanxi, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Chang, Litao,Jin, Hao. A mechanistic study for the fracture mode and ductility variation in a powder metallurgy superalloy hot-isostatic-pressed at sub- and super-solvus temperatures[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2019,743:733-740.
APA	Chang, Litao,&Jin, Hao.(2019).A mechanistic study for the fracture mode and ductility variation in a powder metallurgy superalloy hot-isostatic-pressed at sub- and super-solvus temperatures.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,743,733-740.
MLA	Chang, Litao,et al."A mechanistic study for the fracture mode and ductility variation in a powder metallurgy superalloy hot-isostatic-pressed at sub- and super-solvus temperatures".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 743(2019):733-740.