Influence of thermal exposure on microstructure evolution and tensile fracture behaviors of compacted graphite iron

IMR OpenIR

	Influence of thermal exposure on microstructure evolution and tensile fracture behaviors of compacted graphite iron
	Qiu, Y.; Pang, J. C.; Li, S. X.; Yang, E. N.; Fu, W. Q.; Liang, M. X.; Zhang, Z. F.; Pang, JC; Zhang, ZF (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
	2016-05-10
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	664 页码:75-85
摘要	The mechanical properties of compacted graphite iron (CGI) may undergo degradation when it exposes at high temperature environment for a long period of time. In this study, the influences of thermal exposure conditions on microstructure evolution, tensile properties, especially in-situ tensile fracture behaviors of CGI were investigated. The experimental results show that the cementite surrounding the vermicular graphite (VG) gradually decomposes into ferrite and graphite with increasing the thermal exposure time. The increase of ferrite content with lower strength but higher ductility around VG particles, and the size and content of VG particles can lead to the easier initiation of crack, decrease of strain hardening rate, and the retard of the crack propagation rate in the matrix. All these factors often cause the decrease of strength but increase of elongation to fracture for CGI. Finally the relationship among yield strengths of CGI and matrix, and graphite content was discussed. (C) 2016 Elsevier B.V. All rights reserved.
部门归属	[qiu, y. ; pang, j. c. ; li, s. x. ; yang, e. n. ; zhang, z. f.] chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china ; [fu, w. q. ; liang, m. x.] china res & dev acad machinery equipment, 10 chedaogou st, beijing 100083, peoples r china
关键词	Compacted Graphite Iron Thermal Exposure In-situ Tensile Testing Microstructure Evolution Fracture Mechanism
学科领域	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
资助者	National Natural Science Foundation of China (NSFC) [51331007]
收录类别	sci
语种	英语
WOS记录号	WOS:000375819700009
引用统计	被引频次：49[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/321006/75878
专题	中国科学院金属研究所
通讯作者	Pang, JC; Zhang, ZF (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
推荐引用方式 GB/T 7714	Qiu, Y.,Pang, J. C.,Li, S. X.,et al. Influence of thermal exposure on microstructure evolution and tensile fracture behaviors of compacted graphite iron[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2016,664:75-85.
APA	Qiu, Y..,Pang, J. C..,Li, S. X..,Yang, E. N..,Fu, W. Q..,...&Zhang, ZF .(2016).Influence of thermal exposure on microstructure evolution and tensile fracture behaviors of compacted graphite iron.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,664,75-85.
MLA	Qiu, Y.,et al."Influence of thermal exposure on microstructure evolution and tensile fracture behaviors of compacted graphite iron".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 664(2016):75-85.