金属学报  1994, Vol. 30 Issue (10): 448-452

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慢加载条件下氢对裂纹萌生与扩展的作用

韩光炜;宋余九

冶金工业部钢铁研究总院;西安交通大学

EFFECTS OF HYDROGEN ATOMS OF INITIATION AND PROPAGATION OF CRACKS UNDER SLOW LOADING

HAN Guangwei(Central Iron and Steel Research institute Ministry of Metallurgical Industry); SONG Yujiu; (Xi′an Jiaotong University)(Manuscript received 9 November; 1993; in revised form 3 June; 1994)

韩光炜;宋余九. 慢加载条件下氢对裂纹萌生与扩展的作用[J]. 金属学报, 1994, 30(10): 448-452.
, . EFFECTS OF HYDROGEN ATOMS OF INITIATION AND PROPAGATION OF CRACKS UNDER SLOW LOADING[J]. Acta Metall Sin, 1994, 30(10): 448-452.

摘要 参考文献 相关文章 Metrics 全文: PDF(398 KB)   摘要: 在扫描电镜原位拉伸条件下，研究了氢原子对正火态的Ｃｒ－１Ｍｏ钢裂纹萌生与扩展的作用结果发现：氢原子使缺口根部韧性裂纹萌生时的临界塑变降低，并使裂纹的扩展方式从沿最大切应力方向的连续扩展改变成沿最大主应力面的跳跃扩展．试验未发现明显的氢致塑变特征．文中对氢原子的影响机理进行了分析． 关键词 ： 沿晶裂纹,  位错输氢,  临界氢原子浓度,  Ｃｒ－１Ｍｏ钢     Abstract：The effects of hydrogen atoms on crack initiation and propagation have been studied in normalized Cr-1Mo steel using in situ SEM tensile experiment. The results are found that the critical plastic deformation at notch root for initiation of ductile crack is reduced by charging hydrogen, and the crack propagation pattern is also changed from continuous growth on the plane of maximum shear stress to uncontinuous growth on maximum normal stress plane. Hydrogen induced plastic deformation has not been found, and the effect mechanisms of hydrogen atoms are analysized.Correspondent: HAN Guangwei, Department 5, Central Iron and Steel Research Institute, Ministry of Metallurgical Industry, Beijing 100081 Key words： intergranular crack    dislocation transport hydrogen atoms    critical hydrogen atom density    Cr- 1Mo steel 收稿日期: 1994-10-18      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 韩光炜 宋余九 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1994/V30/I10/448 1DoigP,JonesGT．MetallTrans,1977;8A:19932McMahonCJ,VitekV,JoklML．Fracture′77,NewYork:PergamonPress,3633ThompsonAWMetallTrans,1979;10A:7274韩光炜．西安交通大学博士学位论文,19925孙军．西安交通大学博士学位论文,1989 [1] 张子龙, 夏爽, 曹伟, 李慧, 周邦新, 白琴. 晶界特征对316不锈钢沿晶应力腐蚀开裂裂纹萌生的影响*[J]. 金属学报, 2016, 52(3): 313-319. [2] 洪友士;W.R.TYSON;B.FAUCHER. 稀土元素对2.25Cr-1Mo钢断裂性能的影响[J]. 金属学报, 1988, 24(4): 282-287. Viewed Full text Abstract Cited   Shared      Discussed