电焊机2017，Vol.47Issue(6)：1-6,6.DOI:10.7512/j.issn.1001-2303.2017.06.01
异种钢焊缝中的Ⅱ型边界组织及其影响
Type Ⅱ boundary microstructure and its influence of dissimilar steel weld
孙咸1
作者信息
- 1. 太原理工大学焊接材料研究所,山西太原030024
- 折叠
摘要
Abstract
The type Ⅱ boundary microstructure and its influence of the austenite and non-austenite dissimilar steels welds are summarized.The results show that there is a type Ⅱ boundary structure extending parallel to the bond line in the transition zone of dissimilar steels welds.The conditions of temperature and crystal structure are essential conditions for form of type Ⅱ boundary,and the driving force of transformation is a sufficient condition,none is indispensable.The type Ⅱ boundary is a set of weak and approximately plane interfaces,once welded joints are immersed by hydrogen,the martensites on the bond boundary may produce hydrogen cracks.The existence of type Ⅱ boundary is the essential condition of the welds stripping,and the working conditions of the joints are sufficient conditions.For the cracks and weldment stripping caused by type Ⅱ boundary,it is necessary to find out the property and cause of the cracks and adopt the targeted measures.关键词
Ⅱ型边界组织/异种钢焊缝金属/马氏体/裂纹/剥离Key words
type Ⅱ boundary microstructure/dissimilar steel weld metal/martensite/crack/stripping分类
矿业与冶金引用本文复制引用
孙咸..异种钢焊缝中的Ⅱ型边界组织及其影响[J].电焊机,2017,47(6):1-6,6.
