金属学报  1978, Vol. 14 Issue (4): 383-467

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低合金高强度钢焊接热影响区微裂纹的研究

张有为;张瑞斌

AN INVESTIGATION OF HAZ MICROCRACKS IN MULTILAYER WELDING OF LOWALLOY HIGH-STRENGTH STEELS

Zhang You-wei Zhang Rui-bin

张有为;张瑞斌. 低合金高强度钢焊接热影响区微裂纹的研究[J]. 金属学报, 1978, 14(4): 383-467.
, . AN INVESTIGATION OF HAZ MICROCRACKS IN MULTILAYER WELDING OF LOWALLOY HIGH-STRENGTH STEELS[J]. Acta Metall Sin, 1978, 14(4): 383-467.

摘要 参考文献 相关文章 Metrics 全文: PDF(5852 KB)   摘要: 低合金高强度钢焊接热影响区微裂纹一般集中于多层焊缝盖面焊道熔合线的凹入处,距钢板表面3—7毫米,而与熔合线取向基本垂直。熔合线凹入处的局部条件直接影响微裂纹的形成。实验证明,熔池凹度d是这些局部不利条件的综合表征。在基体金属固定不变的情况下,裂纹率主要随熔池凹度d的增大而提高,焊接单位能只表现出间接的影响。 采用微裂纹不敏感的工艺规范和利用焊丝侧向倾斜角度等工艺措施可以有效地降低或消除热影响区微裂纹。 Abstract：In multilayer welding of low-alloy high-strength steels, HAZ microcracks are generally observed at the concavities of the fusion lines near the surface layer, being about 3—7 mm beneath the surface of the plate and almost perpendicular to the fusion lines. The formation of these microcracks is closely related to local conditions of the Tusion line concavities. There is reason to believe that the concavity ("d") of the weld pool may be taken as an important indication of such local conditions. Thus, for a given base metal, the tendency of microcracks formation may increase mainly with the increase of "d", whereas the effect of energy imput during welding appears to be less important in this respect.The HAZ microcracks may be minimized by using microcrack insensitive welding condition or/and by lateral inclination of the electrod wire during welding. 收稿日期: 1978-04-18      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 张有为 张瑞斌 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1978/V14/I4/383 [1] Shackleten, D.N., Welding HY100 and HY130 Steels--A Literature Review, The Welding Institute, Cambridge, England, 1973, p. 10-11． [2] Meitzner, C. F. and Stout, R. D., Welding J. (New York), 45 (1966) , 393-s. [3] Savage, W. F. and Szekeres, E. S., Welding J. (New York), 46 (1967) , 94-s. [4] Wilson, W. G., Welding J. (New York), 50 (1971) , 42-s. [5] Bredstreet, B. J., Welding J.(New York), 47 (1968) , 314-s. [6] Woods, R. A. and Milner, D. R., Welding J. (New York), 50 (1971) , 163-s. [7] #12 [8] #12 [9] #12 [10] Hiroshi Ikawa, et al., On the Martensite-like Structure at Weld Bond and the Macroscopic segregation in Weld Metal in the Welded dissimilar Metals of a-steels and γ-steels, 11W Doc. Ⅸ-785-72, April, 1972． [11] Baker, R. G., Welding J. (New York), 47 (1968) , 323-s. [12] #12 [13]#12 [14]#12 [15] Vinckier, A. G., Welding J. (New York), 50 (1971) , 19-s. [16] Doty, W. D., Welding J. (New York), 50 (1971) , 49-s. [17] Randall, M. D. et al., Welding J, (New York), 40 (1961) , 385-s. No related articles found! Viewed Full text Abstract Cited   Shared      Discussed