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A Newly Developed Wrought Ni-Fe-Cr-based Superalloy for Advanced Ultra-Supercritical Power Plant Applications Beyond 700 degrees C
Guan, Shuai; Cui, Chuan-Yong; chycui@imr.ac.cn
2015
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Volume28Issue:9Pages:1083-1088
AbstractSome existing wrought Ni-Cr-Co-based superalloys are being evaluated as the candidate materials for advanced ultra-supercritical power plant applications beyond 700 degrees C due to their high creep strength. But they are all prohibitively expensive due to the addition of Co, Mo and W. Here we developed a new Ni-Fe-Cr-based superalloy (named as HT700 alloy) with low cost and high strength. This paper reports the mechanical properties and fracture modes of HT700 alloy to support its high temperature applications and to understand prospective failure mechanism. Fracto-graphic examinations indicate that the fracture modes shift with test condition change. In addition, the HT700 alloy has relatively stable microstructure at 750 degrees C. Compared with IN740 and GH2984 alloys, this new alloy has higher yield strength in the temperature range from room temperature to 800 degrees C. The creep life of this new alloy is much longer than that of the Ni-Fe-based superalloy GH2984. The results suggest that this new alloy is a promising material for advanced ultra-supercritical power plant applications beyond 700 degrees C.
description.department[guan, shuai ; cui, chuan-yong] chinese acad sci, inst met res, shenyang 110016, peoples r china
KeywordWrought Ni-fe-cr-based Superalloy Low Cost High Strength Fracture Mode
Funding OrganizationHigh Technology Research and Development Program of China [2014AA041701]; National Natural Science Foundation of China [51171179, 51271174, 51331005, 11332010]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/74594
Collection中国科学院金属研究所
Corresponding Authorchycui@imr.ac.cn
Recommended Citation
GB/T 7714
Guan, Shuai,Cui, Chuan-Yong,chycui@imr.ac.cn. A Newly Developed Wrought Ni-Fe-Cr-based Superalloy for Advanced Ultra-Supercritical Power Plant Applications Beyond 700 degrees C[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2015,28(9):1083-1088.
APA Guan, Shuai,Cui, Chuan-Yong,&chycui@imr.ac.cn.(2015).A Newly Developed Wrought Ni-Fe-Cr-based Superalloy for Advanced Ultra-Supercritical Power Plant Applications Beyond 700 degrees C.ACTA METALLURGICA SINICA-ENGLISH LETTERS,28(9),1083-1088.
MLA Guan, Shuai,et al."A Newly Developed Wrought Ni-Fe-Cr-based Superalloy for Advanced Ultra-Supercritical Power Plant Applications Beyond 700 degrees C".ACTA METALLURGICA SINICA-ENGLISH LETTERS 28.9(2015):1083-1088.
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