Characterization of hot deformation behavior of Ti60 alloy by using processing map

Weiju Jia, Weidong Zeng, Yigang Zhou, Jianrong Liu, Qingjiang Wang

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

Abstract

The hot deformation behavior of Ti60 titanium alloy was investigated at the temperatures ranging from 960°C to 111°C and the strain rates ranging from 0. 001 s-1 to 10 s-1 using hot compression tests. Processing map for hot working was developed on the basis of the Dynamic Materials Model. Its stress-strain curves revealed greater flow softening in the α+β field than that in the β field. In α+β field, flow softening was caused by break-up and globularisation of lamellar α as well as deformation heating during deformation. While in the β field,flow softening was caused by dynamic recovery and recrystallization. The material exhibited superplasticity with a peak efficiency of 60% at 990°C and 0. 001 s-1, which was the optimum parameters for α+β field working. There were two instability fields in the processing map:960-970°C at 0. 18-10 s-1 and 1010-1110°C at 0. 75-10 s-1. These fields should be avoided due to the formation of the adiabatic shear bands during the deformation of Ti60 alloy.

Original languageEnglish
Title of host publicationTi 2011 - Proceedings of the 12th World Conference on Titanium
Pages265-268
Number of pages4
StatePublished - 2012
Event12th World Conference on Titanium, Ti 2011 - Beijing, China
Duration: 19 Jun 201124 Jun 2011

Publication series

NameTi 2011 - Proceedings of the 12th World Conference on Titanium
Volume1

Conference

Conference12th World Conference on Titanium, Ti 2011
Country/TerritoryChina
CityBeijing
Period19/06/1124/06/11

Keywords

  • Hot deformation
  • Processing map
  • Titanium alloy

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