Themicrostructure of bonded zone consist of upper bainite and grain boundary ferrite.
接合部组织由晶界铁素体及晶内上贝氏体组成。
Weld metal zone are mostly acicular ferrite which can improve the weld zone toughness.
焊缝金属区晶粒分布均匀，焊缝金属区多为针状铁素体，能够提高焊缝区的韧性。
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。
应用推荐