The joint which is connected by welding method is called the welding joint, which is composed of welding seam, fusionzone, heat affected zone and its adjacent base metal.
用焊接方法连接的接头称为焊接接头，它由焊缝、熔合区、热影响区及其邻近的母材组成。
2
The microstructure and fine structure of weld fusionzone for high strength fine grain steel were studied.
研究了高强度细晶粒碳素钢焊接接头熔合区附近的显微组织及精细结构。
3
The main region of invalidation of the weld joint between different steels is commonly in fusionzone during welding or serving.