Acta Metall Sin  1996, Vol. 32 Issue (1): 39-45    DOI:

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IN SITU TEM OBSERVATION OF SCC IN 310 STAINLESS STEEL

HUANG Yizhong; CHEN Qizhi; CHU Wuyang (University of Science and Technology Beijing; Beijing 100083)(Manuscript received 1995-03-28; in revised form 1995-07-03)

HUANG Yizhong; CHEN Qizhi; CHU Wuyang (University of Science and Technology Beijing; Beijing 100083)(Manuscript received 1995-03-28; in revised form 1995-07-03). IN SITU TEM OBSERVATION OF SCC IN 310 STAINLESS STEEL. Acta Metall Sin, 1996, 32(1): 39-45.

Abstract References Related Articles Recommended Metrics Download:  PDF(595KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The in situ TEM observations of dislocation emission, motion and the initiation of nanocrack in 310 stainless steel in water were carried out. Using a special constant deflection device,the dislocation configuration change ahead of a loaded crack tip before and after anodic dissolution in the the deionized water and the initiation, propagation of nanometre scale stress corrosion cracks have been oberved. The results showed that SCC in thin foil specimen of 310 stainless steel can occur in water.The localized anodic dissolution of 310 stainless steel in water at room temperature facilitated dislocation emission, multipication and motion. A nanocrack initated in the DFZ or at the blunted crack tip in corrosion solution after dislocations emission, multiplication and motion reached critical condition. Because of the influence of the corrosion solution, the nanocrack propagates and forms a cleavage microcrack during stress corrosion instead of blunting into a void as it does during a tension test without solution.Correspondent: HUANG Yizhong,(Department of Materials Physics, University of Science and Technology Beijing,Beijing 100083) Key words:  310 stainless steel      TEM      dislocation      anodic dissolution      Received:  18 January 1996      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1996/V32/I1/39 1乔利杰,褚武扬,肖纪美．金属学报,1987;23:A2282乔利杰,缪辉俊,褚武扬,肖纪美．中国科学A,1991;12;12183QiaoLJ,ChuWY,HiaoCM．Corrosion,1987;43:4794QiaoLJ,ChuWY,HiaoCM．Corrosion,1988,44:505ChuWY,WangHL,HiaoCM．Corrosion,1984;40:4876褚武扬．氢损伤与滞后断裂．北京:冶金工业出版社,1988:3167SieradzkiK,NewmanRC．PhilMag,1985;51:958GalveleJR．CorrosSci,1987;27:19KanfmanMJ,FinkJI．ActaMetall．1985;36:221310MagninT,ChieragattiR,OltraR．ActaMetallMater．1990;38:131311JonesDA．MetallTrans．1985;16A:113312黄一中,陈奇志,褚武杨,袁昌言．金属学报,1994;30:B45213OhrSM．MaterSciEng,1985;72:114陈奇志,褚武扬,肖纪美．中国科学,1994;A24:291 [1] WANG Lei, LIU Mengya, LIU Yang, SONG Xiu, MENG Fanqiang. 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