一、焊接对钢材的影响1.焊接热影响区的组织分布特征在焊接的高温热循环作用下,焊缝两侧母材实际上是在经受一个快速加热和快速冷却的特殊热处理过程,因而其组织及性能随之发生变化,这部分区域称为焊接热影响区。在热影响区的不同部位,由于经受的焊 First, the impact of welding on the steel 1. Heat affected zone HAZ distribution under the welding heat cycle, the base metal on both sides of the weld is actually subjected to a rapid heating and rapid cooling of the special heat treatment process, and therefore its As a result, the organization and performance change, which is called the weld heat affected zone. In different parts of the heat-affected zone, due to the welding that is being subjected