40Cr—9SiCr钢的超塑焊接工艺

Technology of Superplastic Welding Between 40Cr and 9SiCr Steels

４０Ｃｒ、９ＳｉＣｒ钢经预处理和表面处理后可在空气炉中实现超塑性固相焊接，其焊接工艺条件为：温度７７０～７９０℃、应变速率２～３×１０（－４）ｓ（－１）、预压力６０～８０ＭＰａ、时间３～７ｍｉｎ。

Superplastic solid state welding of steels 40Cr-9SiCr,with prior surface after pretreatment wasperformed in electro-furnace under the conditions of 770￣790℃.2￣3×10(-4)4s(-1).60￣80MPa.3￣7min,the joints were examined to have simjlar strength to the steel 40Cr.