在氢环境中16Mng钢的短裂纹低频疲劳特性

中国腐蚀与防护学报

1996, Vol. 16

Issue (1): 59-63

研究报告

本期目录 | 过刊浏览

在氢环境中16Mng钢的短裂纹低频疲劳特性

钟曼英;王晓林

中国计量学院

CHARACTERISTICS OF LOW FREQUENCY FATIGUE WITH SHORT－CRACKS FOR 16Mng STEEL IN HYDROGEN

Zhong Manying;Wang Xiaolin

全文: PDF(803 KB)

摘要: 研究了在氢环境中１６Ｍｎｇ钢的低频短裂纹扩展规律。应用弹塑性断裂力学和△Ｊ参数，用ｄａ／ｄＮ＝Ｃ（△Ｊ）ｎ计算裂纹的扩散速率。结果表明ｄａ／ｄＮ～△Ｊ关系曲线分三个阶段；并得到了在氢环境中裂纹扩展的门槛值△Ｊ（ｔｈ）。用金相法考察了裂纹扩展的途径。

关键词 ：短裂纹, 低频疲劳, ｄａ／ｄＮ~△Ｊ关系, 门槛值

Abstract：The low frequency short－crack propegation model for 16Mng steel in hydrogen was investigsted．The crack growth rates were calculated on the basis of elasto-plastic fracture mechanics using the formula da／dN—C（△J）n．The results showed that the relation of da／dN～ △J consisted of three sections. The threshold value △Jth for crack propagation was calculated and the crack propagation path was observed by metallograpy.

Key words： Short－crack Low frequency fatigue da／dN～△J relations Threshold value

收稿日期: 1996-02-25

基金资助:浙江省自然科学基金

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引用本文:

钟曼英;王晓林. 在氢环境中16Mng钢的短裂纹低频疲劳特性[J]. 中国腐蚀与防护学报, 1996, 16(1): 59-63.
. CHARACTERISTICS OF LOW FREQUENCY FATIGUE WITH SHORT－CRACKS FOR 16Mng STEEL IN HYDROGEN. J Chin Soc Corr Pro, 1996, 16(1): 59-63.

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https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y1996/V16/I1/59

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