Phase Characterization and Formation Behavior in 6 wt% Si High-silicon Austenitic Stainless Steel during Isothermal Aging

doi:10.1007/s40195-020-01152-7

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	Phase Characterization and Formation Behavior in 6 wt% Si High-silicon Austenitic Stainless Steel during Isothermal Aging
	Chen, Sihan 1,2; Liang, Tian 1,3; Zhou, Yangtao 1; Xing, Weiwei 1; Zheng, Chengwu 1; Ma, Yingche 1; Wu, JinMing 3; Li, Guobin 4; Liu, Kui 1
刊名	ACTA METALLURGICA SINICA-ENGLISH LETTERS
	2020-10-14
页码	8
关键词	High-silicon austenitic stainless steel Precipitates chi-Phase Precipitation behavior
ISSN号	1006-7191
DOI	10.1007/s40195-020-01152-7
通讯作者	Liang, Tian(tliang@imr.ac.cn) ; Liu, Kui(kliu@imr.ac.cn)
英文摘要	The precipitation behavior of different phases in a high-silicon stainless steel (6 wt% Si) during aging at 600-1050 degrees C for 24 h was investigated. The morphology, crystal structure and composition of various precipitates were detailly characterized using optical microscopy, scanning electron microscopy and transmission electron microscopy. Four phases were mainly identified:chi-phase,M6C carbides,sigma phase and a new type offcc-phase. During aging at 600-900 degrees C, the main precipitate was (Cr, Mo and Si)-rich chi-phase which was directly precipitated from gamma matrix. The chi-phase was calibrated as bcc structure with a lattice parameter of 8.90 A. The peak temperature for the precipitation of chi-phase was 800 degrees C, and it was dissolved when aging at temperatures above 1000 degrees C. The sigma-phase was observed only at 700 degrees C and grew next to chi-phase. Above 700 degrees C, a newfcc-phase was found to be precipitated along with chi-phase, with a space group ofFd3cand a lattice parameter of 12.56 A. TheM(6)C carbides started to be precipitated at 700 degrees C in the vicinity of chi-phase. And its amount basically increased with the increasing of temperature. An orientation relationship betweenM(6)C/gamma was found: [100]c//[100]gamma, (001)c//(001)gamma, i.e., the cube-on-cube relationship.
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
WOS记录号	WOS:000577229500001
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/140985]
专题	金属研究所_中国科学院金属研究所
通讯作者	Liang, Tian; Liu, Kui
作者单位	1.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China 3.Zhejiang Univ, Sch Mat Sci & Engn, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China 4.Zhejiang Xindeda Special Pipe Ind Co Ltd, Wenzhou 325024, Peoples R China
推荐引用方式 GB/T 7714	Chen, Sihan,Liang, Tian,Zhou, Yangtao,et al. Phase Characterization and Formation Behavior in 6 wt% Si High-silicon Austenitic Stainless Steel during Isothermal Aging[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2020:8.
APA	Chen, Sihan.,Liang, Tian.,Zhou, Yangtao.,Xing, Weiwei.,Zheng, Chengwu.,...&Liu, Kui.(2020).Phase Characterization and Formation Behavior in 6 wt% Si High-silicon Austenitic Stainless Steel during Isothermal Aging.ACTA METALLURGICA SINICA-ENGLISH LETTERS,8.
MLA	Chen, Sihan,et al."Phase Characterization and Formation Behavior in 6 wt% Si High-silicon Austenitic Stainless Steel during Isothermal Aging".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2020):8.