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Effects of platinum group metals addition on the precipitation of topologically close-packed phase in Ni-base single crystal superalloys
Gao, Shuang; Zhou, Yizhou; Li, Cai-Fu; Liu, Zhi-Quan; Jin, Tao; yzzhou@imr.ac.cn; zqliu@imr.ac.cn
2016
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume671Pages:458-464
AbstractPrecipitation of topologically close-packed (TCP) phase in Ni-base single crystal superalloys with additions of platinum group metals (PGMs) was investigated by in situ transmission electron microscopy (TEM). Pt, Ir and Ru additions are all helpful to suppress the precipitation of TCP phase, among which Ru has the largest efficiency while Pt has the least one. Comparing with the TCP precipitation in non-PGMs alloys, addition of Ru mainly retards the nucleation rate of TCP phase, but Pt and Ir mainly reduces the growth rate of TCP precipitates. Elemental partitioning investigation reveals that Pt and Ir prefer partitioning to the surrounding gamma matrix rather than in the precipitated mu phase, and Ru distributes homogenously in both gamma matrix and mu phase. Cr distribution in precipitated mu phase is higher in Pt/Ir-containing alloys than in Ru-containing alloy, which is supposed to be related to the different metallic bonding energy of Cr-Pt, Cr-Ir and Cr-Ru. (C) 2016 Elsevier B.V. All rights reserved.
description.department[gao, shuang ; zhou, yizhou ; li, cai-fu ; liu, zhi-quan ; jin, tao] chinese acad sci, inst met res, shenyang 110016, peoples r china
KeywordPlatinum Group Metals Ni-base Single Crystal Superalloy Topologically Close-packed Phase Precipitation In-situ Tem
Funding OrganizationNatural Science Foundation of China [51271186]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/74789
Collection中国科学院金属研究所
Corresponding Authoryzzhou@imr.ac.cn; zqliu@imr.ac.cn
Recommended Citation
GB/T 7714
Gao, Shuang,Zhou, Yizhou,Li, Cai-Fu,et al. Effects of platinum group metals addition on the precipitation of topologically close-packed phase in Ni-base single crystal superalloys[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2016,671:458-464.
APA Gao, Shuang.,Zhou, Yizhou.,Li, Cai-Fu.,Liu, Zhi-Quan.,Jin, Tao.,...&zqliu@imr.ac.cn.(2016).Effects of platinum group metals addition on the precipitation of topologically close-packed phase in Ni-base single crystal superalloys.JOURNAL OF ALLOYS AND COMPOUNDS,671,458-464.
MLA Gao, Shuang,et al."Effects of platinum group metals addition on the precipitation of topologically close-packed phase in Ni-base single crystal superalloys".JOURNAL OF ALLOYS AND COMPOUNDS 671(2016):458-464.
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