金属学报  1986, Vol. 22 Issue (6): 73-78

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超高强度钢Ⅲ型试样的应力腐蚀

褚武扬;肖纪美;朱淑彦;徐佰琪

北京钢铁学院;北京钢铁学院;北京钢铁学院;北京钢铁学院

STRESS CORROSION CRACKING IN HIGH STRENGTH STEEL UNDER MODE Ⅲ LOADING

by CHU Wuyang; XIAO Jimei (Chi-Mei Hsiao); ZHU Shuyan; XU Baiqi (Beijing University of Iron and Steel Technology)

褚武扬;肖纪美;朱淑彦;徐佰琪. 超高强度钢Ⅲ型试样的应力腐蚀[J]. 金属学报, 1986, 22(6): 73-78.
, , , . STRESS CORROSION CRACKING IN HIGH STRENGTH STEEL UNDER MODE Ⅲ LOADING[J]. Acta Metall Sin, 1986, 22(6): 73-78.

摘要 参考文献 相关文章 Metrics 全文: PDF(961 KB)   摘要: 研究了超高强度钢Ⅲ型缺口试样在水介质中的应力腐蚀,并与动态充氢条件作了对比。结果表明,超高强度钢Ⅲ型试样在水介质中能产生应力腐蚀,而且裂纹沿着和原缺口面成45°的平面形核和扩展,获得沿晶断口。这些都和Ⅲ型试样动态充氢时氢致开裂的情况相同。水介质中加硫脲,能使Ⅲ型和Ⅰ型的应力腐蚀门槛值明显下降,如动态充氢,则使裂纹的孕育期和门槛值进一步下降,实验也表明,无论动态充氢还是应力腐蚀,Ⅲ型试样的门槛值均比Ⅰ型要高,这可用Ⅲ型和Ⅰ型的平衡氢浓度不同来解释。 Abstract：Stress corrosion cracking (SCC) of high-strength steel in aqueous medium in comparison to hydrogen induced cracking (HIC) during dynamic charging under mode Ⅲ loading was investigated. The threshold stress intensities for SCC and HIC under mode Ⅲ and Ⅰ were measured and compared. It was found that both SCC and HIC under mode Ⅲ loading initiated and propagated on the planes inclined at 45°to the notch plane, differing from that under mode Ⅰ loading. The fracture surfaces, however, revealed intergranular facets, similar to that under mode Ⅰ loading. The addition of thiourea decreases the threshold value for SCC under mode Ⅲ and Ⅰ loading, which was still higher than that for dynamic charging. The threshold values of both SCC and HIC under mode Ⅲ are larger than that under mode Ⅰ, i. e., K_(ⅢH)K_(ⅠH), K_(ⅢSCC)K_(ⅠSCC). Based upon the fracture mechanics analysis, this difference is attributed to the different equilibrium hydrogen concentration between mode Ⅲ and Ⅰ loading. These results give enough evidence that the SCC mechanism in high strength steel under mode Ⅲ loading is also related to hydrogen induced cracking. 收稿日期: 1986-06-18      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 褚武扬 肖纪美 朱淑彦 徐佰琪 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1986/V22/I6/73 1 Hayden, H.W.; Floreen, S., Corrosion, 27 (1971) , 429． 2 Pickens, J. R.; Gordon, J.R.; Green, J.A.S., Metall Trans. A, 14A(1983) , 925． 3 Chu W.Y. (褚武扬); Hsiao C.M. (肖纪美); Ju S.Y. (朱淑彦); Wang C. (王枨), Corrosion 38(1982) , 446． 4 Chu W.Y. (褚武扬); Zhang T.Y. (张统一); Hsiao C.M.(肖纪美), Corrosion, 40(1984) , 197． 5 Chu W.Y. (褚武扬); Hsiao C.M. (肖纪美), Li S.Q.(李世琼), Corrosion, 37(1981) , 320． 6 Chu W.Y. (褚武扬); Hsiao C.M. (肖纪美) , Li W.X. (李文学); Zhang Y.G. (张彦国), Metall Trans. A, 15A(1984) , 2087． 7 褚武扬编著,断裂力学基础,科学出版社,1979． 8 Zhang T.Y.(张统一); Chu W.Y.(褚武扬); Hsiao C.M.(肖纪美), Metall. Trans. A,16A(1985) ,1649． 9 张统一;褚武扬;肖纪美,中国科学,1986,№3,316． No related articles found! Viewed Full text Abstract Cited   Shared      Discussed