Metallurgical Response of Electron Beam Welded Allvac® 718Plus™
Paper in proceedings, 2011

Electron beam welding of forged Allvac 718Plus superalloy has been carried out without any visible cracks in weld cross-sections. Healed cracks in the heat affected zone were, however, seen in most cross-sections with the healing as well as the cracking believed to be due to the constitutional liquation of the δ-phase. The δ-phase undergoes constitutional liquation in the Heat Affected Zone (HAZ) and consequently decreases the ductility of the material and renders cracks in the HAZ but due to the large amount of eutectic liquid produced at the same time the healing of the opened cracks takes place.

Author

Joel Håkan Andersson

Chalmers, Materials and Manufacturing Technology, Surface and Microstructure Engineering

Göran Sjöberg

Chalmers, Materials and Manufacturing Technology, Surface and Microstructure Engineering

Hannu Hänninen

Hot Cracking Phenomena in Welds III, Ed. by T.H. Boellinghaus, J.C. Lippold, and C.E. Cross

415-428

Subject Categories

Other Materials Engineering

Areas of Advance

Materials Science

DOI

10.1007/978-3-642-16864-2-21

ISBN

978-3-642-16863-5

More information

Created

10/6/2017