Effects of Sr Addition on as Cast Microstructure of AS31 Alloy

Ji Xue Zhou; Yuan Sheng Yang; Shou Qiu Tang; Chang Wen Tian

doi:10.4028/www.scientific.net/MSF.686.125

Paper Titles

Effects of Annealing Treatment on Texture and Stamping Properties of AZ31 Magnesium Alloy
p.101

Effects of Gallium Addition on the Microstructure and Electrochemical Properties of Al-Zn-Bi Series Alloy Anode
p.107

Effects of Microstructural Morphology on Mechanical Properties of Magnesium Alloys
p.113

Effects of Sr Addition on Mechanical Properties and Microstructure of Mg-6Al Magnesium Alloy
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Effects of Sr Addition on as Cast Microstructure of AS31 Alloy
p.125

Effects of Ultrasound on the Microstructures and Mechanical Properties of Cast-Rolling AZ31B Magnesium Alloy Strip
p.129

Evaluation on Vibration Property of Magnesium Honeycomb Panels
p.135

Flow Behavior and Microstructural Evolution of ZW61 Alloy during Hot Compressive Deformation
p.140

Galvanic Corrosion Behavior and Three Protection Techniques of Magnesium Alloy Coupled to A6N01S-T5 Aluminum Alloy in NaCl Solution
p.146

HomeMaterials Science ForumMaterials Science Forum Vol. 686Effects of Sr Addition on as Cast Microstructure...

Effects of Sr Addition on as Cast Microstructure of AS31 Alloy

Abstract:

The effect of Sr addition on the as-cast microstructure of AS31 alloy was studied. The experimental results show that the grain size decreased obviously from 1116μm to 221μm for AS31 alloy with addition of 0.05%Sr, and promote the formation of globular grains. The morphology of eutectic Mg₂Si phase is changed from Chinese script to polyhedral shape or fine fibers shape. The grain refinement mechanism is attributed to the enrichment of Sr element at solidification interface front, which restricts the growth of α-Mg primary dendrite. The modification of the eutectic Mg₂Si phases results from the dissociative Sr changing the preferred growth manner of them.

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Materials Science Forum (Volume 686)

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125-128

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https://doi.org/10.4028/www.scientific.net/MSF.686.125

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Online since:

June 2011

Authors:

Ji Xue Zhou, Yuan Sheng Yang, Shou Qiu Tang, Chang Wen Tian

Keywords:

AS31 Magnesium Alloy, Grain Refinement, Modification, SR

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