Microstructure and strength of a thick-section gas-tungsten arc weld in cast Haynes® 282® alloy

Michael L. Santella, Xiang Chen, Jason Rausch, Jonathan Salkin, Philip J. Maziasz

Research output: Book/ReportCommissioned report

Abstract

A 50-mm deep gas tungsten arc weld was made with matching filler metal in cast Haynes 282 alloy. The narrow gap joint was filled with 104 weld beads. The weld deposit was of high quality with no visible indications of physical defects. The weld heat-affected zone was characterized by microcracking and localized recrystallization. Hardness testing showed that a softened region in the as-welded heat-affected zone was nearly eliminated by post-weld heat treatment. Tensile testing up to 816°C showed that cross-weld specimen strengths were about 80% of the yield strength of the original cast base metal. The rupture strengths of cross-weld specimens are within 20% of wrought base metal reference data.
Original languageEnglish
Place of PublicationUnited States
DOIs
StatePublished - 2020

Keywords

  • 36 MATERIALS SCIENCE
  • 42 ENGINEERING

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