The paper mainly briefs the welding performance,constituent of welding joint,mechanical property and typic failure modes etc. of new kinds of steels used in the ultrasupercritical pressure boilers.

• 文章主要介绍了超超临界机组用新钢种的焊接性能、化学成分、焊接接头的组织、蠕变性能和典型的失效方式等。