J Mater Sci Technol ›› 2001, Vol. 17 ›› Issue (01): 189-190.

• Research Articles • Previous Articles     Next Articles

Superplastic solid-phase welding of 40 Cr-T10A steel

Keke ZHANG, Yunlin YANG, Changsheng WANG, Hongke LI, Jin XUE   

  1. Dept. of Material Engineering, Luoyang institute of Technology, Luoyang 471039, China...
  • Received:2000-04-05 Revised:1900-01-01 Online:2001-01-28 Published:2009-10-10
  • Contact: Keke ZHANG

Abstract: The microstructure of 40Cr and T10A steel sample and its surface to be welded is ultra-fined through salt-bath cyclic quenching and high frequency hardening, then the surface is cleaned. Under non-vacuum and no shielded gas, the welding parameter of isothermal superplastic solid-phase welding and the effect of surface microstructure prior to pressure welding on the quality of joint are stud led. At the temperature of 730 similar to 750 ℃ and at initial strain rate of (2~4) x 10(-4) s(-1) the strength of the joint is up to or close to that of 40Cr base metal in 3 similar to5 min pressure welding.

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