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Characterization of hot deformation behavior of Udimet720Li superalloy using processing map

  • Jian Guo Wang
  • , Dong Liu
  • , Tao Wang
  • , Yan Hui Yang
  • Northwestern Polytechnical University Xian
  • Beijing Institute of Aeronautical Materials

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

3 Scopus citations

Abstract

The deformation behavior of a Udimet720Li superalloy under hot compression tests was characterized in the temperature range of 1060~1160°C and strain rate range of 0.001~20s-1. Processing maps were conducted at a series of strains to calculate the efficiency of hot working and to recognize the instability regions of the flow behavior. A Zener-Hollomon parameter is given to characterize the dependence of peak stress on temperature and strain rate. The efficiency of power dissipation of the Udimet720Li superalloy obtained in a strain range of 0.1~0.7 are essentially similar, which indicates that strain does not have a significant influence and the instability region shown in high strain and high strain rates at all temperatures. The regions for the full recrystallization can be divided by the dissolution beginning temperature of primary γ′ which are the optimum hot working parameters.

Original languageEnglish
Title of host publicationAdvances in Materials and Materials Processing IV
Pages1161-1168
Number of pages8
DOIs
StatePublished - 2014
Event2013 4th International Conference on Advances in Materials and Manufacturing, ICAMMP 2013 - Kunming, China
Duration: 18 Dec 201319 Dec 2013

Publication series

NameAdvanced Materials Research
Volume887-888
ISSN (Print)1022-6680

Conference

Conference2013 4th International Conference on Advances in Materials and Manufacturing, ICAMMP 2013
Country/TerritoryChina
CityKunming
Period18/12/1319/12/13

Keywords

  • Hot compressive deformation
  • Microstructure
  • Processing map
  • Udimet720Li superalloy

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