金属学报  1984, Vol. 20 Issue (2): 124-130

论文 本期目录 | 过刊浏览 |

稳定型奥氏体不锈钢的氢致滞后开裂

姚京;褚武扬;肖纪美

北京钢铁学院;研究生;北京钢铁学院;北京钢铁学院

HYDROGEN INDUCED DELAYED CRACKING IN STABLE AUSTENITIC STAINLESS STEELS

by YAO Jing; CHU Wuyang; XIAO Jimei (Belling University of Iron and Steel Technology) (Manuscript received 2 September; 1982; revised manuscript 25 March; 1983)

姚京;褚武扬;肖纪美. 稳定型奥氏体不锈钢的氢致滞后开裂[J]. 金属学报, 1984, 20(2): 124-130.
, , . HYDROGEN INDUCED DELAYED CRACKING IN STABLE AUSTENITIC STAINLESS STEELS[J]. Acta Metall Sin, 1984, 20(2): 124-130.

摘要 参考文献 相关文章 Metrics 全文: PDF(1377 KB)   摘要: 用单边裂纹恒载荷试样研究了三种奥氏体不锈钢(18-8,310,K-55)充氢后的氢致滞后开裂行为。三种钢在恒载荷下充氢都出现滞后断裂,其门槛值分别约为K_(IH)/K_c=0.55,0.70和0.80,如果预先充氢再在空气中加载,也能产生氢致滞后开裂,如充氢后除气,则不能,这就表明,无论是不稳定型(18-8)还是稳定型(310,K-55)奥氏体不锈钢都能产生氢致滞后开裂。18-8钢充氢时能发生马氏体相变,从而促进氢致开裂过程,其K_(IH)/K_c比不产生马氏体的310和K-55要低。 所有奥氏体不锈钢的氢致滞后断口形貌都和K_I有关。当滞后断裂的K_I较大时是韧性断口,K_I较小时则是脆性断口。 Abstract：The behaviour of hydrogen induced delayed cracking (HIDC, i. e. slow crack growth) in a type 310 and a type 16-20-20 (K55) stable austenitic stainless steels along with a type 321 unstable austenitic stainless steel were investigated with a single-edge notched tensile specimen. It was found that HIDC could occur in all 3 types of stainless steels and the threshold values were K_(IH)/K_c =0.55, 0.70 and 0.80 for stainless steels 321, 310 and K-55 respectively, if the specimens were charged with load. HIDC could also occur if the precharged specimens were tested under constant load in air. No HIDC, however, occurred in the precharged and then outgassed specimens. It indicates that the delayed cracking in stable austenitic stainless steels is induced by atomic hydrogen. Because there is no hydrogen induced α' martensite in type 310 and K-55 stainless steel, the existence of α' is not necessary for the oecurrenee of HIDC in the austenitic stainless steels, though it can facilitate HIDC. The mode of hydrogen induced delayed fracture in either stable or unstable austenitie stainless steels is correlated with K_I value, the fracture surface was changed from ductile to brittle as K_I is decreased. 收稿日期: 1984-02-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 姚京 褚武扬 肖纪美 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1984/V20/I2/124 1 Whiteman, M. B.; Troiano, A. R., Corrosion, 21(1965) , 53． 2 大沢基明;长谷川正羲,防食技术,30(1981) ,141． 3 Soxton, H. I.; West, A T.; Thompson, A. W., Effect of Hydrogen on the Behavior of Materials, Eds Thompson, A. W.; Bernstein, I. M.; AIME, New York, 1976, p. 631． 4 Ohnishi, K; Chiba, R.; Ishiaka, J.; Kaga, H., Hydrogen in Metals, Suppl.. Trans. JIM, 21 (1980) , p. 485． 5 Eliezer, D.; Chakrapani, D. G.; Altstetter, C. J.; Pugh, E. N., Metall. Trans., 10A(1979) , 935． 6 Briant, C. L., Metall. Trans., 10A(1979) , 181． 7 Eliezer, D., Hydrogen Effects in Metals, Eds. Bernstein I. M.; Thompson, A. W., AIME, New York, 1981, p. 565． 8 褚武扬;林实;王枨;田中卓,断裂韧性测试,科学出版社,1979,p.173． 9 褚武扬;肖纪美;李世琼;王枨,金属学报,16(1980) ,179． No related articles found! Viewed Full text Abstract Cited   Shared      Discussed