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Metallurgical Response of Electron Beam Welded Allvac® 718Plus™

Joel Andersson (Institutionen för material- och tillverkningsteknik) ; Göran Sjöberg (Institutionen för material- och tillverkningsteknik) ; Hannu Hänninen
Hot Cracking Phenomena in Welds III, Ed. by T.H. Boellinghaus, J.C. Lippold, and C.E. Cross p. 18. (2011)
[Konferensbidrag, refereegranskat]

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.

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Denna post skapades 2011-05-05.
CPL Pubid: 140311


Institutioner (Chalmers)

Institutionen för material- och tillverkningsteknik


Övrig teknisk materialvetenskap

Chalmers infrastruktur

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