摘要
用FeNiCrSiB非晶合金箔作中间层 ,氩气保护 ,对T91钢管进行了瞬时液相扩散连接。通过正交试验的方法研究了工艺参数对接头组织和性能的影响 ,分析了TLP连接接头的显微组织、力学性能和元素分布 ,确定出了合适的连接工艺参数。研究表明 ,在合适的工艺参数下 ,焊缝为成分与基体相似的固溶体 ,且没有沉淀相 ,可以获得良好的性能。研究出的最佳工艺为 :连接温度 1 2 5 0℃ ,中间层为FeNiSiB非晶合金箔 ,等温凝固时间 3min ,压力 6MPa。
T91 steel pipes were joined by transient liquid-phase(TLP) diffution bonding process using FeNiSiB amorphous alloy as filler in argon atmosphere. The influence of the bonding parameters on the microstructures and mechanical properties of bonded joint was investigated by using the orthogonal experiment. The microstructures and properties, as well as the element distribution of the joints were examined. TLP bonding parameter is determined. The testing results showed that the solidified bond were consists of a primary solid solution with a composition similar to that of the parent metal and free from precipitates and proper mechanical properties. The optimum process has been obtained as the following: bonding at 1 250 ℃ for 3 min under 6 MPa with FeNiSiB composite interlayer.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2004年第6期73-76,共4页
Transactions of The China Welding Institution
关键词
T91钢
瞬时液相扩散
中间层
正交试验
显微组织
T91 steel
transient liquid-phase diffution bonding
interlayer
orthogonal experiment
microstructures
