Behavior of titanium alloy under uniaxial and biaxial superplastic conditions

Z. Chen, Z. Li, P. Dang, Namas Chandra

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The validity of extending constitutive relationships established under uniaxial condition to biaxial forming is an important issue from both basic and applied perspectives. The deformation of titanium alloy is studied under both uniaxial and biaxial states of stress to understand this relationship. Based on the mechanical constitutive equation obtained from uniaxial test, a model based on finite element method (FEM) was established to predict the superplastic deformation (SPD) of biaxial cones. The cones are designed to be subjected to balanced biaxial state of stress under a constant pressure loading. In the multi-cone test, four cones of different diameters are concurrently formed when they are subjected to different biaxial strain rate conditions. Sensitivity of material parameters obtained under uniaxial conditions are critically examined. Thickness profile and metallurgical state of the cones are also analyzed.

Original languageEnglish (US)
Title of host publicationModeling the Mechanical Response of Structural Materials
PublisherMinerals, Metals & Materials Soc (TMS)
Pages191-199
Number of pages9
StatePublished - Jan 1 1998
Externally publishedYes
EventProceedings of the 1998 TMS Annual Meeting - San Antonio, TX, USA
Duration: Feb 15 1998Feb 19 1998

Other

OtherProceedings of the 1998 TMS Annual Meeting
CitySan Antonio, TX, USA
Period2/15/982/19/98

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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