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

Christof Sommitsch, Daniel Huber, Martin Stockinger

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

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.

Original languageEnglish
Title of host publicationTHERMEC 2009
Pages2327-2332
Number of pages6
DOIs
Publication statusPublished - 9 Feb 2010
Event6th International Conference on Processing and Manufacturing of Advanced Materials - Berlin, Germany
Duration: 25 Aug 200929 Aug 2009

Publication series

NameMaterials Science Forum
Volume638-642
ISSN (Print)0255-5476

Conference

Conference6th International Conference on Processing and Manufacturing of Advanced Materials
Abbreviated titleTHERMEC 2009
CountryGermany
CityBerlin
Period25/08/0929/08/09

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Keywords

  • FEM
  • Metadynamic recrystallization
  • Superalloy

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Sommitsch, C., Huber, D., & Stockinger, M. (2010). Metadynamic recrystallization of the nickel-based superalloy Allvac 718Plus™. In THERMEC 2009 (pp. 2327-2332). (Materials Science Forum; Vol. 638-642). https://doi.org/10.4028/www.scientific.net/MSF.638-642.2327