Microstructure and Creep Property of As-Cast Mg-6Al-XSr(x=0, 2, 3) Alloys

Yu Feng Wu; Wen Bo Du; Yi Nan Zhang; Tie Yong Zuo

doi:10.4028/www.scientific.net/AMR.284-286.1564

Paper Titles

The Oxidation of Co-10Cr Alloys in 1 Atm of Pure O₂ at 700 and 800^οC
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Corrosion of Amorphous Fe_73.5Si_13.5B₉Nb₃Cu₁ Alloys on the Synergistic Effect of Chloride and Hydroxyl Ions
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Effect of Er on Ignition-Proof Property of Mg-Zn Alloys
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Preparation and Characterization of As-Cast and Hot-Rolled Mg-5Al-0.3Mn-1Ce Alloy
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Microstructure and Creep Property of As-Cast Mg-6Al-XSr(x=0, 2, 3) Alloys
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Influence of Y Element on Microstructure and Mechanical Properties of ZK60 Alloy
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Analysis of LIGA-Ni Microstructure
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Dynamic Deformation Behavior of As-Extruded Mg-Gd-Y Magnesium Alloy and the Microstructural Evolution
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Microstructures of Low Angle Boundaries of the Second Generation Single Crystal Superalloy DD6
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Microstructure and Creep Property of As-Cast Mg-6Al-XSr(x=0, 2, 3) Alloys

Abstract:

The microstructure and creep property of as-cast Mg-6Al-xSr(x=0, 2,3) alloys were studied. Results showed that the branch-like Al₄Sr phase is the main precipitating phase in these alloys containing Sr. Their secondary creep rates under the applied stress of 70MPa at 175°Cdecreased with the increasing in the content of Sr and reached the minimum value of 1.4×10^-8s^-1 in the Mg-6Al-3Sr alloy, which is one thirtieth of secondary creep rates of the Mg-6Al alloy. It was mainly attributed to Al₄Sr, which effectively hindered the grain boundaries sliding and dislocation motion in the creep.