Study on hot deformation behavior of cast-and-homogenized superalloy GH706

Yan Hui Yang, Dong Liu, Jian Bing Peng, Jian Guo Wang, Guo Wei Liu, Yang Hu

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

Abstract

Hot deformation behavior of cast-and-homogenized GH706-ingot material was studied in this work. Isothermal uniaxial compression tests were performed at temperatures(°C): 990, 1020, 1050, 1080 and 1100 with strain rates (s-1): 0.01, 0.1 and 1. The stress-strain curves as well as changes in microstructures of various hot deformed specimens were analyzed. Inhomogeneous microstructures were found in the specimens and the flow curves were resulted from the comprehensive functions of microstructures change in all part of the specimens. The constitutive relationship of alloy GH706 has been established by linear regression analysis of the experimental data taken from the Arrhenius equations as a model. Then hot compression tests were carried out to estimate the allowable reductions, and 52.5% and 50.6% are suggested as the allowable reductions during cogging processing of GH706 alloy in each blow at 1110°C and 1130°C.

Original languageEnglish
Title of host publicationHigh Performance Structural Material
EditorsYafang Han, Qiang Zhang, Bin Jiang, Bin Jiang
PublisherTrans Tech Publications Ltd
Pages648-654
Number of pages7
ISBN (Electronic)9783038353959
DOIs
StatePublished - 2015
EventChinese Materials Congress, CMC 2014 - Chengdu, China
Duration: 4 Jul 20147 Jul 2014

Publication series

NameMaterials Science Forum
Volume816
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

ConferenceChinese Materials Congress, CMC 2014
Country/TerritoryChina
CityChengdu
Period4/07/147/07/14

Keywords

  • Cast-and-homogenized GH706 alloy
  • Compression test
  • Hot deformation behavior

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