The changes of microstructure in welding zone and its vicinity were observed, and flexural strength of the welding zone was also tested.
观察分析了焊接区及其附近的组织变化，测试了焊接区的室温弯曲强度。
The stress of the welding zone decreases with the increase of the distance between the welding zone and other stress concentration zone.
焊缝位置越远离其他应力集中区，焊缝应力越小；
By using this process to repair castings, there is no obvious separating line, no slag inclusion and gas hole between the welding zone and base metal.
用此工艺焊补铸件，焊补区域与基体间没有明显的熔合线，无渣孔、气孔等缺陷。
The temperature difference of welding zone can be decreased with small dipping angle, high dipping speed and low heat exchange coefficient of dipping Zn liquid.
降低浸镀锌液的换热系数，采用小角度快速浸入可以降低焊缝区域温差。
The corresponding relations between temperature field and microstructure of welding zone were validated by comparing simulation results with microstructure morphology.
通过模拟温度场结果与焊缝区组织的比较，验证了不同的温度场与不同焊缝组织的对应关系。
The results show that the coupling effect between the welding zone and other stress concentration zone can be observed, which decreases the fatigue life of the structure.
结果发现，焊接区与其它应力集中区会发生应力耦合效应，进而降低结构的疲劳寿命。
The large welding current caused the formation of quenched martensite and the high residual stresses in the welding zone, resulting in the increase of zinc sensitivity of hydrogen attack.
结果表明：由于焊接电流过大，使焊缝产生淬火马氏体组织及较大的焊接残余应力，导致镀锌氢脆敏感性增加，造成吸油盘发生氢脆开裂。
After visual inspection and metallographic test, analysis and discuss the welding zone cracking reasons for 6061 and A7003 aluminum alloy thin-walled tube after TIG (argon shielded arc) welding.
通过宏观及微观检测，分析了6061铝合金管及A7003铝合金薄壁管经TIG(氩弧)焊后的焊接区开裂的原因。
After visual inspection and metallographic test, analysis and discuss the welding zone cracking reasons for 6061 and A7003 aluminum alloy thin-walled tube after TIG (argon shielded arc) welding.
通过宏观及微观检测，分析了6061铝合金管及A7003铝合金薄壁管经TIG(氩弧)焊后的焊接区开裂的原因。
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