Constitutive Model of Thixotropic Plastic Forming for Semi-Solid AZ61 Magnesium Alloy

Abstract:

Uniaxial compression tests on semi-solid AZ61 alloy fabricated by stain-induced activation (SIMA) process and the conventional casts were carried out using the Gleedle-1500 dynamic material testing machine. The relationships between stress and stain were analyzed. The numerical relationships among processing parameters (strain rate z ε&
strain z ε
temperature T
liquid volume fraction L f ) and stress were studied. The proposed constitutive equation was established for semi-solid AZ61 magnesium alloy using the multiple nonlinear regression method. A scientific basic provided for both numerical simulation of processing process of semi- solid AZ61 alloy and rational choice and control of processing parameters.

• Periodical: Solid State Phenomena (Volumes 116-117)
• Pages: 639-642
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.116-117.639
• Online since: October 2006
• Authors: Hong Yan, Bing Feng Zhou
• Keywords: Constitutive Model, Multiple Nonlinear Regression, Semi-Solid AZ61 Alloy, Thixoforming

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