Synchronous optimization of strengths, ductility and corrosion resistances of bulk nanocrystalline 304 stainless steel

doi:10.1016/j.jmst.2019.05.073

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	Synchronous optimization of strengths, ductility and corrosion resistances of bulk nanocrystalline 304 stainless steel
	Wang, S. G.; Sun, M.; Liu, S. Y.; Liu, X.; Xu, Y. H.; Gong, C. B.; Long, K.; Zhang, Z. D.
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2020-01-15
卷号	37 页码:161-172
关键词	Stainless steel Pitting corrosion Stress corrosion Tensile properties Low-cycle fatigue Severe rolling technology
ISSN号	1005-0302
DOI	10.1016/j.jmst.2019.05.073
通讯作者	Wang, S. G.(sgwang@imr.ac.cn)
英文摘要	Structural materials usually suffer from several attacks during their service, such as tension, fatigue and corrosion. It is necessary to synchronously improve these properties for their lightweight and long-lifetime, but corrosion resistance and ductility are generally inverse correlation with strength, it is very difficult to simultaneously optimize all three properties. However, bulk nanocrystalline 304 stainless steel (BN-304SS) produced by severe rolling technology possessed the larger yield and ultimate tensile strengths with sufficient elongation (> 40%) during tensile test, the larger saturation stress and longer lifetime during low-cycle fatigue, the enhanced uniform and pitting corrosion resistances during fiveday immersion test in 6 mol/L HCl, the lowered stress corrosion cracking (SCC) susceptibility with larger yield (similar to 2.40 GPa) and ultimate tensile (similar to 2.66 GPa) strengths, and enough elongation (> 30%) during stress corrosion in comparison with conventional polycrystalline 304 stainless steel (CP-304SS) counterpart. The uniform and pitting corrosion resistances of fractured BN-304SS were enhanced in comprsion with those of fractured CP-304SS during seven-day immersion test in 1 mol/L HCl. These results demonstrated the strengths, ductility and corrosion resistances of BN-304SS can be simultaneously optimized by severe rolling technology. These improved results of BN-304SS in different disciplines were understood by its valence electron configurations rather than traditional microstructural parameters. (C) 2019 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
资助项目	National Natural Sciences of Foundation of China[51171199] ; Pujiang, Chengdu, Sichuan Province, China[Y5N4811181]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	JOURNAL MATER SCI TECHNOL
WOS记录号	WOS:000503163100020
资助机构	National Natural Sciences of Foundation of China ; Pujiang, Chengdu, Sichuan Province, China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/136248]
专题	金属研究所_中国科学院金属研究所
通讯作者	Wang, S. G.
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Wang, S. G.,Sun, M.,Liu, S. Y.,et al. Synchronous optimization of strengths, ductility and corrosion resistances of bulk nanocrystalline 304 stainless steel[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2020,37:161-172.
APA	Wang, S. G..,Sun, M..,Liu, S. Y..,Liu, X..,Xu, Y. H..,...&Zhang, Z. D..(2020).Synchronous optimization of strengths, ductility and corrosion resistances of bulk nanocrystalline 304 stainless steel.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,37,161-172.
MLA	Wang, S. G.,et al."Synchronous optimization of strengths, ductility and corrosion resistances of bulk nanocrystalline 304 stainless steel".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 37(2020):161-172.