Investigation of Uniaxial Tensile Properties of AA6082 under HFQ^® Conditions

Abstract:

For a metal forming process, the uniaxial tensile properties of a material are the most fundamental and important properties to investigate. Solution heat treatment, forming and in-die quenching (HFQ^®) is a patented process to form complex shape panel components using aluminium alloys at high efficiency and low cost. A Gleeble materials thermo-mechanical simulator was used to conduct uniaxial tensile testing of AA6082 under HFQ^® conditions. A set of grips were specially designed to reduce the heat loss of specimen during testing in a Gleeble and allow the strain measurement by using digital image correlation (DIC) system. A large dog-bone specimen with parallel length of 80mm was designed to minimise the temperature gradient along the gauge section. Temperature gradient was measured and uniaxial tensile tests were conducted at the range of deformation temperature of 350-535 °C and the range of strain rate of 0.1-4 /s. The uniaxial tensile properties of AA6082 at different temperatures and strain rates under HFQ^® conditions were summarised and the viscoplastic response of the material was discussed.

• Periodical: Key Engineering Materials (Volume 716)
• Pages: 337-344
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.716.337
• Online since: October 2016
• Authors: N. Li*, Zhu Tao Shao, Jian Guo Lin, Trevor A. Dean
• Keywords: AA6082, HFQ^®, Strain Measurement, Temperature Distribution, Uniaxial Tensile Test

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