Metadynamic recrystallization of the nickel-based superalloy Allvac 718Plus™

Christof Sommitsch*, Daniel Huber, Martin Stockinger

*Korrespondierende/r Autor/-in für diese Arbeit

Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in einem KonferenzbandBegutachtung

Abstract

During hot working of the recently developed nickel based alloy Allvac 718Plus™ softening kinetics like dynamic, metadynamic as well as static recrystallization govern the microstructure evolution during and after hot forming and hence the final mechanical properties. In this work the metadynamic recrystallization was investigated using double hit compression tests. The classical methodology of offset stress comparison was not usable because of discontinuous yielding of this material. Thus a new method to describe the softening during metadynamic recrystallization was developed, which compares the deformation energy at equal strains, i.e. the area beneath the true strain vs. true stress curve, of the first and second hit as well as at steady state.

Originalspracheenglisch
TitelTHERMEC 2009
Seiten2327-2332
Seitenumfang6
DOIs
PublikationsstatusVeröffentlicht - 9 Feb 2010
Veranstaltung6th International Conference on Processing and Manufacturing of Advanced Materials: Thermec 2009 - Technical University-Berlin, Berlin, Deutschland
Dauer: 25 Aug 200929 Aug 2009

Publikationsreihe

NameMaterials Science Forum
Band638-642
ISSN (Print)0255-5476

Konferenz

Konferenz6th International Conference on Processing and Manufacturing of Advanced Materials
KurztitelTHERMEC 2009
Land/GebietDeutschland
OrtBerlin
Zeitraum25/08/0929/08/09

ASJC Scopus subject areas

  • Werkstoffwissenschaften (insg.)
  • Physik der kondensierten Materie
  • Werkstoffmechanik
  • Maschinenbau

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