Effects of Alloying Elements on Thermal Expansion Behavior of Ni-Fe-Cr-Based Superalloys

doi:10.1007/s11661-018-4898-3

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	Effects of Alloying Elements on Thermal Expansion Behavior of Ni-Fe-Cr-Based Superalloys
	Wu, Yunsheng 1,2; Qin, Xuezhi 1; Zhou, Lanzhang 1
刊名	METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
	2018-11-01
卷号	49A 期号:11 页码:5653-5660
ISSN号	1073-5623
DOI	10.1007/s11661-018-4898-3
通讯作者	Qin, Xuezhi(xzqin@imr.ac.cn)
英文摘要	The effects of alloying elements on the thermal expansion of Ni-Fe-Cr-based superalloys are investigated by optical microscope, scanning electron microscope, and transmission electron microscope. The results indicate that Fe and Cr increase the thermal expansion coefficient (TEC) of alloys and the effect of Cr on the TEC is significantly enhanced by the presence of Fe. Al and Ti present a minor influence on the TEC owing to their low contents in the alloys. The TEC of alloys rises with the reduction of lattice parameter of gamma matrix in the Fe-containing or non-ferrous alloys; indeed, this is the essential reason why the TEC changes with the modification of the contents of various elements. Finally, it is found that the TEC of alloys is principally determined by the gamma matrix due to its dominant amount. The gamma' phase and grain boundary also contribute to reducing the TEC, but their effects are screened by the matrix due to their negligible volume (or weight) fraction. (C) The Minerals, Metals & Materials Society and ASM International 2018.
资助项目	National Natural Science Foundation of China[51871213] ; National Natural Science Foundation of China[51001101] ; National Key Research and Design Plan[2017YFB0305204]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000446711300040
资助机构	National Natural Science Foundation of China ; National Key Research and Design Plan
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/130020]
专题	金属研究所_中国科学院金属研究所
通讯作者	Qin, Xuezhi
作者单位	1.Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Wu, Yunsheng,Qin, Xuezhi,Zhou, Lanzhang. Effects of Alloying Elements on Thermal Expansion Behavior of Ni-Fe-Cr-Based Superalloys[J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,2018,49A(11):5653-5660.
APA	Wu, Yunsheng,Qin, Xuezhi,&Zhou, Lanzhang.(2018).Effects of Alloying Elements on Thermal Expansion Behavior of Ni-Fe-Cr-Based Superalloys.METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,49A(11),5653-5660.
MLA	Wu, Yunsheng,et al."Effects of Alloying Elements on Thermal Expansion Behavior of Ni-Fe-Cr-Based Superalloys".METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE 49A.11(2018):5653-5660.