Metallurgical Response of Electron Beam Welded Allvac® 718Plus™
Paper i proceeding, 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.

Författare

Joel Håkan Andersson

Chalmers, Material- och tillverkningsteknik, Yt- och mikrostrukturteknik

Göran Sjöberg

Chalmers, Material- och tillverkningsteknik, Yt- och mikrostrukturteknik

Hannu Hänninen

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

415-428

Ämneskategorier

Annan materialteknik

Styrkeområden

Materialvetenskap

DOI

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

ISBN

978-3-642-16863-5

Mer information

Skapat

2017-10-06