金属学报  1987, Vol. 23 Issue (3): 211-216

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高、低强度钢疲劳短裂纹扩展特性

杨正瑞;茅新伟;李锋钢

上海交通大学;上海交通大学;上海交通大学

STUDY ON FATIGUE CRACK GROWTH BEHAVIOR OF HIGH AND LOW-STRENGTH STEELS

YANG Zhengrui; MAO Xinwei; LI Fenggang (Shanghai Jiaotong University) (Manuscript received 1 July; 1985; revised manuscript 25 March; 1986)

杨正瑞;茅新伟;李锋钢. 高、低强度钢疲劳短裂纹扩展特性[J]. 金属学报, 1987, 23(3): 211-216.
, , . STUDY ON FATIGUE CRACK GROWTH BEHAVIOR OF HIGH AND LOW-STRENGTH STEELS[J]. Acta Metall Sin, 1987, 23(3): 211-216.

摘要 参考文献 相关文章 Metrics 全文: PDF(430 KB)   摘要: 本文研究了5C钢和两种不同强度的40CrNiMo钢长、短裂纹近门槛区域的疲劳裂纹扩展性能。并测定了它们的闭合效应和断面粗糙度,结果表明:长、短裂纹的扩展速率和门槛值差别与钢强度有关,5C钢短裂纹的门槛值只是长裂纹的一半。长、短裂纹疲劳特性的差别可用闭合效应来解释。 Abstract：Characteristics of tong (7mm) and short (0.2-0.4mm) fatigue crack propagation in 5C and 40CrNiMo steels with two stength levels have been studied. The fracture surface roughness and crack closure have been measured. It was found that the fatigue crack growth rate of short crack in low strength 5C steel is anomalously higher at a given stress intensity amplitude, but the threshold △K_(th) is lower. The difference in the growth behavior and threshold △K_(th) between long and short crack reduced with increasing material strength, that may be explained by crack closure effect. 收稿日期: 1987-03-18      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 杨正瑞 茅新伟 李锋钢 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1987/V23/I3/211 1 Pearson S, Eng Fract Mech, 1975; 7: 235 2 El Haddad M H, Topper T H, Smith K N. Eng Fract Mech, 1979; 11: 573 3 McCarver J F, Ritchie R O, Mater Sci Eng, 1982; 55: 63 4 Breat J L, Mudry F, Pineau A. Fat Eng Mater Struct, 1983; 6: 349 5 Lankford J, Davidson D L, Chan K S. Metall Trans, 1984; 15A: 1579 6 Ritchie R O. Int Metall Rev, 1979; 24: 205 7 符长璞,伍尚礼,李世维,安运铮,郭涛,理化检验(物理分册),1984;20(5) :57 8 Gan D, Weertman J. Eng Fract Mech, 1981; 15: 87 9 Elber W. ASTM STP 486, 1971; 230 10 Stewart A T. Eng Fract Mech, 1980; 13: 463 11 Ritchie R O. Suresh S. Metall Trans, 1982; 13A: 937& No related articles found! Viewed Full text Abstract Cited   Shared      Discussed