weld ductility test 焊缝延伸试验
The results of performance measurement test show that tensile-strength, contraction of cross sectional area, elongation percentage, dynamic ductility of the weld all exceed their base metal.
焊后试件的性能测试结果表明，焊接接头的拉伸强度、断面收缩率、延伸率及冲击韧性均已超过母材。
Weld access hole geometry and size have significant effect on ductility and failure mode of the connection.
节点局部构造尤其是焊接孔形状尺寸对于节点应力集中情况和节点破坏模式有很大影响。
The effective method to improve the impact ductility of this zone is to change the welding process and conduct post-weld heat treatment, which is help to divide M-A component into ferrite and carbide.
改善焊接工艺或进行焊后热处理，使M - A组元分解成铁素体和碳化物是提高其韧性的有效方法。
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