weld metal zone

Weld, heat-affected zone and substrate metal test etc.

焊缝中心区, 热影响区,基体组织检验等.

Fracture toughness of heat-affected zone ( HAZ ) was between the base metal and weld metal.

焊接热影响区的断裂韧性介于母材和焊缝金属之间.

The results showed that the low-temp toughness of weld metal could be improved markedly through the welding method of two beads per layer, so that the recrystallization occurred in the middle zone of weld.

结果表明：通过采用每层两道的焊接工艺，使对接焊缝中心部位全部发生重结晶，是焊缝金属低温韧性提高的关键。

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。

The micro analysis demonstrate that the cross section of FSW joint can be divided into weld nugget zone, thermal mechanically affected zone, heat affected zone and base metal.

通过对接头微观组织分析表明，接头横截面由焊核区、热机影响区、热影响区和母材区组成。