Microstructure of weld metal is characterized coarsened austenic granular crystal, and the fusion of interface is fine, crystal of overheated zone do not grows up severely.
英
美
- 焊缝为奥氏体组织,呈较为粗大的柱状晶形态,且与母材熔合良好;过热区的晶粒长大不严重。