Weldmetalzone are mostly acicular ferrite which can improve the weld zone toughness.
焊缝金属区晶粒分布均匀,焊缝金属区多为针状铁素体,能够提高焊缝区的韧性。
2
The tensile strength of welded joint is significantly improved after heat treatment and the failure occurred far away from the weldmetalzone.
焊接接头抗拉强度大幅度提高,断裂均处在远离焊缝的母材上。
3
The result shows that the velocity field changes with the increase of space from shoulder and stir tool and the flow of weldmetal from top to bottom and stir zone to rotation zone also weakens.