weld-metal zone

基本解释

The microstructure of the weld metal and the coarse-grained heat-affected zone are both granular bainite that consists of the bainite lath and the M-A constituent.
焊缝区和热影响区粗晶区组织均为贝氏体板条和M-A组元组成的粒状贝氏体；
Micro characteristic of cracks propagation research: The path of crack propagation in the heat-affected zone and weld metal is the mix of transgranular and intergranular.
裂纹扩展的微观特征研究：在热影响区与焊缝区的裂纹扩展均为沿晶与穿晶混合型。
The basic requirement of welding the steel 2205 is that the weld metal and heat-affected zone obtain a favorable phase balance and retain the performance as the base metal after welding.
平衡铁素体和奥氏体两相组织在焊缝金属和热影响区中的比例，保证焊接接头的性能，是双相不锈钢焊接的基本要求。