Semi-Solid Forming of Al-Mg-Zn Based High Strength Alloys

Jeong Min Kim; Ki Duk Seong; Joong Hwan Jun; Ki Tae Kim; Woon Jae Jung

doi:10.4028/www.scientific.net/SSP.116-117.284

Paper Titles

Research on Thixoforging Magazine Plate of AZ91D Magnesium Alloy in Semi-Solid State
p.267

Fabrication of Rheological Material with Rotational Pressure Type Equipment
p.271

Microstructural Evolution of Semi-Solid AZ61 Magnesium Alloy during Reheating Process
p.275

Study on Partial Remelting Microstructures and Mechanical Properties of ZK60-RE Magnesium Alloy
p.279

Semi-Solid Forming of Al-Mg-Zn Based High Strength Alloys
p.284

Microstructure and Mechanical Properties of Cast and Semi-Solid Formed Mg-Al-Zn Alloys
p.288

Microstructure and Damping Capacity of Semi-Solid AM50 Alloy
p.292

Effect of Disturbing Conditions in Semi-Solid State on Microstructure Evolution of Magnesium Alloy
p.296

A Study on the Microstructural Defects in Slots of Thixoformed Copper Rotor
p.300

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Semi-Solid Forming of Al-Mg-Zn Based High Strength Alloys

Abstract:

Semi-Solid Al-5%Mg-3%Zn-1%Mn alloys with or without 0.2%Zr were prepared by the isothermal heating of either cast ingot or extruded billet. The microstructural and tensile properties variations during the isothermal heating, depending on alloy composition and slurry preparation method, were investigated. The grain (globule) size of semi-solid microstructure was not remarkably changed by the slurry preparation method, however it was significantly reduced by the Zr additions. The room temperature tensile elongation of the semi-solid formed alloys was generally higher in case of the extruded billet. T6 heat treatment was not found effective in improving the strength of the semi-solid alloys, unlike the casting alloys.