Effect of hydrogen on cryogenic mechanical properties of Cr-Ni-Mn-N austenitic steels

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	Effect of hydrogen on cryogenic mechanical properties of Cr-Ni-Mn-N austenitic steels
	L. U. Ma ; G. J. Liang ; J. Tan ; L. J. Rong ; Y. Y. Li
刊名	Journal of Materials Science & Technology
	1999
卷号	15 期号:1 页码:67-70
ISSN号	1005-0302
中文摘要	The method of high-pressure hydrogen charging was used to investigate the internal hydrogen effects on cryogenic mechanical properties of two Cr-Ni-Mn-N austenitic steels, 22-13-5 and 21-6-9. Specimens saturated with hydrogen up to 65x10(-6) similar to 68x10(-6) were tested in air at temperatures ranging from 77 to 293 K. Hydrogen caused the increase in cryogenic strength. both yield strength and ultimate tensile strength. Hydrogen decreased cryogenic ductility, and the maximum hydrogen embrittlement (HE) tendency was found at a certain low temperature. Cr-Ni-Mn-N austenitic steels showed the feature: delta(L) > psi(L) at low temperatures, here, delta(L) and psi(L) are the hydrogen induced loss rates of elongation and reduction of area, respectively Hydrogen had less effect on cryogenic Charpy impact toughness and notched tensile strength, however, hydrogen decreased cryogenic fracture toughness of the steels. At temperature below Md, the fracture toughness was obviously decreased due to the formation of strain-induced martensites, whether hydrogen was charged or not.
原文出处	://WOS:000078112600016
公开日期	2012-04-14
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/37454]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	L. U. Ma,G. J. Liang,J. Tan,et al. Effect of hydrogen on cryogenic mechanical properties of Cr-Ni-Mn-N austenitic steels[J]. Journal of Materials Science & Technology,1999,15(1):67-70.
APA	L. U. Ma,G. J. Liang,J. Tan,L. J. Rong,&Y. Y. Li.(1999).Effect of hydrogen on cryogenic mechanical properties of Cr-Ni-Mn-N austenitic steels.Journal of Materials Science & Technology,15(1),67-70.
MLA	L. U. Ma,et al."Effect of hydrogen on cryogenic mechanical properties of Cr-Ni-Mn-N austenitic steels".Journal of Materials Science & Technology 15.1(1999):67-70.