HRTEM Observation of the Age Hardening Precipitates in Mg-Zn Alloy

Shogo Mori; Tokimasa Kawabata; Kenji Matsuda; Susumu Ikeno

doi:10.4028/www.scientific.net/AMR.26-28.157

Paper Titles

Effect of Ca and Sr Content on Elevated Temperatures Mechanical Properties of a Cast AZ91 Magnesium Alloy
p.141

Mechanical Properties of Twin Roll Cast AZ91 Magnesium Alloy at Room Temperature
p.145

Influence of Initial Texture on Twin Formation and Plastic Deformation of Rolled AZ31 Mg Alloy
p.149

Microstructure and Dynamic Ultra-Micro Hardness of the As-Cast and Extruded Mg-Al-Ca-Sm Alloys
p.153

HRTEM Observation of the Age Hardening Precipitates in Mg-Zn Alloy
p.157

Continuous Rheological Forming of A6061 Wrought Aluminum Alloy by Using Helical Shape Stirrer and its Thixoforging Process
p.161

Effect of Heat Treatment on Microstructures and Properties of Mg-9Gd-4Y-0.3Zr Alloy
p.167

Titanium Hydriding and Consolidation for Recycling of Titanium Tuning Chip
p.171

Influence of Microstructure Change on the Superplastic Properties of Ti₃Al Base Alloy
p.177

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HRTEM Observation of the Age Hardening Precipitates in Mg-Zn Alloy

Abstract:

The age hardening precipitates of Mg-4.7mass%Zn alloy aged at 423K,473K were studied by using high-resolution transmission electron microscope (HRTEM). Contrasts of mono layers were confirmed to exist on the (0001) and (1100) matrix planes. It was considered that the contrast of mono layer was plate-like shape, and identified as pre-precipitates from as-quenched stage to early stage of aging at 473K for 32h . In the peak aged specimen of aged at 473K, the β1’ phase was observed. The β1’ phase has a rod-like shape and parallel to c-axis of Mg matrix. It can be observed orientation relationship between Mg matrix and β1’phase has not only same parts to previous reports but also different parts in one β1’ phase .