1、考虑到焊缝修复时，热影响区（heat affect zone）再次受到热影响，应力分析报告中应考虑到热影响区的材料性能（强度、塑性、韧性）的削弱，即提高相应的安全系数。
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heat-affect zone 热影响区
coarse grain heat affect zone 粗晶热影响区
coarse grained heat affect zone 热影响区粗晶区
The results show that the coarse austenite grain in heat affect zone (HAZ) of Ni-base alloy is observed, mass ferrite appears in HAZ of X60 steel.
高温高压法加速腐蚀。结果表明，C4镍基合金热影响区奥氏体晶粒长大，X60钢过热区为大块铁素体组织。
The striation spacing in heat affect zone and welded seam samples was wider than that in matrix sample, this shows that fatigue crack propagation...
焊缝区和热影响区试样的辉纹间距较基体区的大，说明裂纹扩展速率快，焊缝和热影响区的抗裂纹扩展性较基体差。
Improvement of elongation of joint is related to weaker cool deformation degree of heat affect zone (HAZ) and uniformity of strength and stress level between weld and base metal.
接头延伸率的改善同热影响区冷变形程度的减弱及焊缝强度、应力水平同母材趋于一致有很大关系。
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