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Effect of Intergranular Precipitation on the Internal Oxidation Behavior of Cr-Mn-N Austenitic Stainless Steels
Zheng, Lei-Gang; Hu, Xiao-Qiang; Kang, Xiu-Hong; Li, Dian-Zhong; xqhu@imr.ac.cn
2015
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Volume28Issue:8Pages:1008-1014
AbstractThe effect of intergranular precipitation on the internal oxidation behavior of Cr-Mn-N austenitic steels at 1000 degrees C in dry air atmosphere was investigated using scanning electron microscope, transmission electron microscope, and X-ray diffraction analysis. The results show that intergranular M23C6 carbide morphologies play an important role on the internal oxidation behavior of Cr-Mn-N steels. During the period of the oxidation, both discontinuous chain-shaped and continuous film-shaped intergranular M23C6 carbides precipitated along the grain boundaries. Internal oxides of silica preferentially intruded into the matrix along grain boundaries with discontinuous M23C6 carbide particles, while silica was obviously restricted at the interfaces between the external scale and matrix on the occasion of continuous film-shaped M23C6 carbides. It is seemed that reasonable microstructure could improve the oxidation resistance of Cr-Mn-N steels.
description.department[zheng, lei-gang ; hu, xiao-qiang ; kang, xiu-hong ; li, dian-zhong] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china
KeywordM23c6 Precipitation Internal Oxidation Cr-mn-n Austenitic Steel
Funding OrganizationNational Natural Science Foundation of China [51301175]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/74758
Collection中国科学院金属研究所
Corresponding Authorxqhu@imr.ac.cn
Recommended Citation
GB/T 7714
Zheng, Lei-Gang,Hu, Xiao-Qiang,Kang, Xiu-Hong,et al. Effect of Intergranular Precipitation on the Internal Oxidation Behavior of Cr-Mn-N Austenitic Stainless Steels[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2015,28(8):1008-1014.
APA Zheng, Lei-Gang,Hu, Xiao-Qiang,Kang, Xiu-Hong,Li, Dian-Zhong,&xqhu@imr.ac.cn.(2015).Effect of Intergranular Precipitation on the Internal Oxidation Behavior of Cr-Mn-N Austenitic Stainless Steels.ACTA METALLURGICA SINICA-ENGLISH LETTERS,28(8),1008-1014.
MLA Zheng, Lei-Gang,et al."Effect of Intergranular Precipitation on the Internal Oxidation Behavior of Cr-Mn-N Austenitic Stainless Steels".ACTA METALLURGICA SINICA-ENGLISH LETTERS 28.8(2015):1008-1014.
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