Investigation of impact toughness of a Ni-based superalloy at elevated temperature

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	Investigation of impact toughness of a Ni-based superalloy at elevated temperature
	Y. H. Yang; J. J. Yu; X. F. Sun; T. Jin; H. R. Guan; Z. Q. Hu
	2012
发表期刊	Materials & Design
ISSN	0261-3069
卷号	36 页码:699-704
摘要	The impact toughness of M951 alloy is investigated in temperature range between 20 degrees C and 800 degrees C. The results show that the impact toughness of samples impacted at 600 degrees C shows highest impact toughness value, the impact toughness value drops sharply when the samples impacted at 760 degrees C. In addition samples impacted at 800 degrees C show the higher impact toughness than that of samples impact at 760 degrees C. The scanning electron microscope observations show that cracks initiate at carbides particles due to high stress concentration, which leads to low impact toughness value at 20 degrees C. The dimples which can absorb more energy are formed during the impact at 600 degrees C. The samples impacted at 760 degrees C show lowest impact toughness. Additionally, the dimples nucleation, growth and coalescence are the major fracture mechanism at elevated temperature. (C) 2011 Elsevier Ltd. All rights reserved.
部门归属	[yang, y. h.; yu, j. j.; sun, x. f.; jin, t.; guan, h. r.; hu, z. q.] chinese acad sci, superalloy div, inst met res, shenyang, peoples r china.;yu, jj (reprint author), chinese acad sci, superalloy div, inst met res, shenyang, peoples r china.;jjyu@imr.ac.cn
关键词	Mechanical Microstructure Fractography Deformation-behavior Feal Alloys Tensile Ductility Strength Elements
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60404
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. H. Yang,J. J. Yu,X. F. Sun,et al. Investigation of impact toughness of a Ni-based superalloy at elevated temperature[J]. Materials & Design,2012,36:699-704.
APA	Y. H. Yang,J. J. Yu,X. F. Sun,T. Jin,H. R. Guan,&Z. Q. Hu.(2012).Investigation of impact toughness of a Ni-based superalloy at elevated temperature.Materials & Design,36,699-704.
MLA	Y. H. Yang,et al."Investigation of impact toughness of a Ni-based superalloy at elevated temperature".Materials & Design 36(2012):699-704.