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Effect of Aging Heat Treatment on the Microstructure and Creep Properties of the Cast Ni-Based Superalloy at Low Temperature
Li, Xiang-Wei; Wang, Li; Liu, Xin-Gang; Wang, Yao; Dong, Jia-Sheng; Lou, Lang-Hong
2019-05-01
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Volume32Issue:5Pages:651-658
AbstractEffect of aging heat treatment on the grain boundary microstructure and creep properties of a cast Ni-based superalloy was investigated. With increasing aging temperature from 750 to 1000 degrees C, M23C6 carbides along the grain boundaries evolve from fine distributed block, continuous film into the coarse discrete block. Moreover, the M23C6 carbides are mainly enveloped within layers along grain boundaries during 1000 degrees C aging. Creep rupture lifetime and elongation at 760 degrees C and 645MPa are improved with increasing the aging temperature. In particular, the creep rupture lifetime of the specimens aging at 1000 degrees C is one order of magnitude higher than that of the specimens aging at 750 degrees C. The enhancement of ductility induced by the envelopes plays a significant role in the improvement of creep rupture lifetime.
KeywordSuperalloys Creep Grain boundary Carbides Aging heat treatment
Indexed BySCI
Language英语
WOS IDWOS:000463780700012
PublisherCHINESE ACAD SCIENCES, INST METAL RESEARCH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81140
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Li, Xiang-Wei,Wang, Li,Liu, Xin-Gang,et al. Effect of Aging Heat Treatment on the Microstructure and Creep Properties of the Cast Ni-Based Superalloy at Low Temperature[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2019,32(5):651-658.
APA Li, Xiang-Wei,Wang, Li,Liu, Xin-Gang,Wang, Yao,Dong, Jia-Sheng,&Lou, Lang-Hong.(2019).Effect of Aging Heat Treatment on the Microstructure and Creep Properties of the Cast Ni-Based Superalloy at Low Temperature.ACTA METALLURGICA SINICA-ENGLISH LETTERS,32(5),651-658.
MLA Li, Xiang-Wei,et al."Effect of Aging Heat Treatment on the Microstructure and Creep Properties of the Cast Ni-Based Superalloy at Low Temperature".ACTA METALLURGICA SINICA-ENGLISH LETTERS 32.5(2019):651-658.
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