Most of the heat affected zone retained original structure characteristics of the base metal, and only a fraction of the zone remelted.
热影响区大部分保留了母材的原始组织特征，小部分区域发生了重熔。
Most of the heat affected zone retained original structure characteristics of the base metal, and only a fraction of the zone remelted.
热影响区大部分保留了母材的原始组织特征，小部分区域发生了重熔。
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