Superplasticity and Fracture Morphologies during Superplastic Deformation of a Commercial TC6 Titanium Alloy

Miao Quan Li; A.M. Xiong; Z.Q. Zhang

doi:10.4028/www.scientific.net/MSF.475-479.2961

Paper Titles

Superplasticity and Deformation Mechanism of LD10 Aluminium Alloy
p.2941

An Investigation of Cavity Growth Rate in Superplastic Al and Mg Alloys
p.2945

Developing High Strain Rate Superplasticity in Aluminum Alloys
p.2949

Load Relaxation Behavior of Ultra-Fine Grained Ti-6Al-4V Alloy
p.2955

Superplasticity and Fracture Morphologies during Superplastic Deformation of a Commercial TC6 Titanium Alloy
p.2961

Deformation Behavior of Ti-6Al-4V and Ti-6.85Al-1.6V Alloy with a Globular Microstructure
p.2965

A Study on Mechanical Behavior and Microstructural Evolution in the Superplastic Deformation of Ti75 Alloy
p.2969

Superplastic Extrusion of Al₂O₃-YTZ Nanocomposite and Its Deformation Mechanism
p.2973

High Strain-Rate Superplastic Flow in ZrO₂-30vol% Spinel Composite
p.2977

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Superplasticity and Fracture Morphologies during Superplastic Deformation of a Commercial TC6 Titanium Alloy

Abstract:

Deformation behavior of a commercial TC6 titanium alloy at elevated temperature has been investigated using isothermal tension tests. By SEM, the fracture mechanism has been analyzed through the morphologies of failure surface. The superplasticity of the TC6 titanium alloy improves with an increase of deformation temperature and a decrease of initial strain rate. The optimal process parameters are the combination of 950 c o and 0.001s-1, and the limit elongation could reach 267%. The tough fracture is main pattern in the failure of the TC6 titanium alloy. The fracture begins at the boundaries between the matrix and the impurity, and it presents the much more tough fracture characteristic with an increase of deformation temperature and a decrease of initial strain rate.