The Charpy impact test of base metal, weld and heat affectedzone of X80 grade pipeline steel of certain factory was conducted, and its effective grain was researched.
对某厂x 80高钢级管线钢母材、焊缝、热影响区进行了夏比冲击韧性试验,对其有效晶粒进行了研究。
2
The concept of "weld bead heat affectedzone"(WBHAZ) was proposed.
提出了“焊道热影响区”的概念。
3
The fracture rod has cracks in the microstructure of weldzone, intergranular cracks exists in the coarse grain zone of the weld heat affectedzone.