摘要
用FeNiCrSiB非晶箔作中间层,氩气保护,其它工艺参数不变,通过采用不同保温时间的方法,分析了随保温时间的增加,焊缝力学性能的变化情况,通过研究接头金相组织和焊缝宽度的变化,研究了20钢管瞬时液相扩散焊的全过程。等温10～40s的接头由于降熔元素扩散不充分,力学性能较差,等温凝固阶段在保温60s时已基本完成,并有一个明显"过渡层"的形成,随等温时间的增加,这一"过渡层"变得越来越模糊。
Using FeNiCrSiB amorphous interlayer in argon atmosphere,the welding process of transient liquid-phase bonding for 20 Steel was investigated by changing holding time while other process parameters was invariable. The microstructures and mechanical property and weld width was studied with the increast of holding time. The test results show that the bad joints mechanical property for holding time of 10-40 s due to inadequate diffusion of melting point depressant elements. Isothermal solidification has finished when the holding time was 60 s, and a visible transition layer is formed. The layer became more and more obscure with the increase of holding time.
出处
《热加工工艺》
CSCD
北大核心
2008年第13期93-95,98,共4页
Hot Working Technology
关键词
20钢管
等温时间
中间层
连接过程
过渡层
20 steel tube
holding time
interlayer
welding process
transition layer
