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金属学报  1992, Vol. 28 Issue (10): 41-44    
  论文 本期目录 | 过刊浏览 |
55SiMnMo钢断口微坑形成过程的研究
梁思祖;梁耀能;刘正义
华南理工大学机二系;讲师广州(510641);华南理工大学;华南理工大学
DIMPLE FORMATION ON FRACTURE SURFACE OF STEEL 55SiMnMo
LIANG Sizu; LIANG Yaoneng; LIU Zhengyi (South China University of Technology; Guangzhou)
引用本文:

梁思祖;梁耀能;刘正义. 55SiMnMo钢断口微坑形成过程的研究[J]. 金属学报, 1992, 28(10): 41-44.
, , . DIMPLE FORMATION ON FRACTURE SURFACE OF STEEL 55SiMnMo[J]. Acta Metall Sin, 1992, 28(10): 41-44.

全文: PDF(894 KB)  
摘要: 采用扫描电镜拉伸装置,对55SiMnMo钢正火组织进行拉断观察,发现其断口为微坑型延性断口。微坑形核于铁素体片内,其尖细的撕裂棱是由奥氏体经受强烈的范性变形而形成的。
关键词 微坑范性变形延性断口55SiMnMe钢    
Abstract:The fracture surface of the normalized steel 55SiMnMo was observed, under tensile testing device equipped on SEM, to be of ductile dimple feature in the bainite which are composed of austenite and ferrite. The dimple is almost nucleated in the ferrite. Because the austenitic plastic deformation is remarkable during fracturing, the tear ridge of dimple is very sharp.
Key wordsdimple    plastic deformation    ductile fracture    steel 55SiMnMo
收稿日期: 1992-10-18     
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