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Effects of Alloying Elements on Thermal Expansion Behavior of Ni-Fe-Cr-Based Superalloys
Wu, Yunsheng1,2; Qin, Xuezhi1; Zhou, Lanzhang1
Corresponding AuthorQin, Xuezhi(xzqin@imr.ac.cn)
2018-11-01
Source PublicationMETALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
ISSN1073-5623
Volume49AIssue:11Pages:5653-5660
AbstractThe 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.
Funding OrganizationNational Natural Science Foundation of China ; National Key Research and Design Plan
DOI10.1007/s11661-018-4898-3
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51871213] ; National Natural Science Foundation of China[51001101] ; National Key Research and Design Plan[2017YFB0305204]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000446711300040
PublisherSPRINGER
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/130021
Collection中国科学院金属研究所
Corresponding AuthorQin, Xuezhi
Affiliation1.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
Recommended Citation
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.
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