Solid-state diffusion welding of wrought AISI 304 stainless steel to nimonic AP-1 superalloy powder by hot isostatic pressing

Somani M., Birla N., Tekin A.

WELDING JOURNAL, vol.77, no.2, 1998 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 77 Issue: 2
  • Publication Date: 1998
  • Journal Name: WELDING JOURNAL
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Istanbul Technical University Affiliated: No


The diffusion welding characteristics of wrought AISI 304 stainless steel to a superalloy powder Nimonic AP-1 were examined in this study. After encapsulation, evacuation and degassing, the welds were hot isostatically pressed (HIPed) in two different cycles, i.e., 1200 degrees C (2192 degrees F)/3 h/147 MPa and 1270 degrees C (2318 degrees F)/3 h/121 MPa. A variation in surface condition of slain less steel was also studied for its influence on properties of the joints. These diffusion welded joints were characterized for diffusion of alloying elements, microstructural features and tensile properties.