Microstructures and Mechanical Properties of a Newly Developed Austenitic Heat Resistant Steel

doi:10.1007/s40195-018-0770-0

IMR OpenIR

	Microstructures and Mechanical Properties of a Newly Developed Austenitic Heat Resistant Steel
	Liu, Peng 1,2; Chu, Zhao-Kuang 1; Yuan, Yong 3; Wang, Dao-Hong 4; Cui, Chuan-Yong 1; Hou, Gui-Chen 1; Zhou, Yi-Zhou 1; Sun, Xiao-Feng 1
通讯作者	Cui, Chuan-Yong(chycui@imr.ac.cn)
	2019-04-01
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
卷号	32 期号:4 页码:517-525
摘要	The effect of heat treatment on the microstructures and mechanical properties of a newly developed austenitic heat resistant steel (named as T8 alloy) for ultra-supercritical applications have been studied. Results show that the main phases in the alloy after solution treatment are and primary MX. Subsequent aging treatment causes the precipitation of M23C6 carbides along the grain boundaries and a small number of nanoscale MX inside the grains. In addition, with increasing the aging temperature and time, the morphology of M23C6 carbides changes from semi-continuous chain to continuous network. Compared with a commercial HR3C alloy, T8 alloy has comparable tensile strength, but higher stress rupture strength. The dominant cracking mechanism of the alloy during tensile test at room temperature is transgranular, while at high temperature, intergranular cracking becomes the main cracking mode, which may be caused by the precipitation of continuous M23C6 carbides along the grain boundaries. Typical intergranular cracking is the dominant cracking mode of the alloy at all stress rupture tests.
关键词	Austenitic heat resistant steel Microstructure Mechanical property Fracture mode
资助者	National Natural Science Foundation of China ; China Huaneng Group Co. Ltd.
DOI	10.1007/s40195-018-0770-0
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[11332010] ; National Natural Science Foundation of China[51671189] ; National Natural Science Foundation of China[51701210] ; China Huaneng Group Co. Ltd.[ZD-15-HJK02]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000461434000011
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
引用统计	被引频次：13[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/132056
专题	中国科学院金属研究所
通讯作者	Cui, Chuan-Yong
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China 3.Xian Thermal Power Res Inst Co Ltd, Xian 710032, Peoples R China 4.Jiangsu Feiyue Pump Grp Co Ltd, Taizhou 225300, Peoples R China
推荐引用方式 GB/T 7714	Liu, Peng,Chu, Zhao-Kuang,Yuan, Yong,et al. Microstructures and Mechanical Properties of a Newly Developed Austenitic Heat Resistant Steel[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2019,32(4):517-525.
APA	Liu, Peng.,Chu, Zhao-Kuang.,Yuan, Yong.,Wang, Dao-Hong.,Cui, Chuan-Yong.,...&Sun, Xiao-Feng.(2019).Microstructures and Mechanical Properties of a Newly Developed Austenitic Heat Resistant Steel.ACTA METALLURGICA SINICA-ENGLISH LETTERS,32(4),517-525.
MLA	Liu, Peng,et al."Microstructures and Mechanical Properties of a Newly Developed Austenitic Heat Resistant Steel".ACTA METALLURGICA SINICA-ENGLISH LETTERS 32.4(2019):517-525.