Microstructure and properties of blended Mg-Al alloys fabricated by semisolid processing

被引：15
作者：
Nandy, T. K. [1 ]
Messing, Rebecca M.
Jones, J. Wayne
Pollock, Tresa M.
Walukas, D. M.
Decker, R. F.
机构：
[1] Def Met Res Lab, Hyderabad 500058, Andhra Pradesh, India
[2] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48108 USA
[3] Phillips Plast Corp, Eau Claire, WI 54701 USA
[4] Thixomat Inc, Ann Arbor, MI 48108 USA
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2006年 / 37A卷 / 12期
关键词：
Material Transaction; Magnesium Alloy; Ultimate Tensile Strength; Solid Fraction; Unmelted Particle;
D O I：
10.1007/s11661-006-1066-y
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A new procedure for blending die-cast Mg-Al alloys by semisolid processing to achieve controlled variations in microstructure and properties has been investigated. Granules of AM60B and AZ91D have been blended in varying proportions and Thixomolded at nominal solid fractions of 0.1 and 0.3, respectively. As-molded microstructures and the role of interdiffusion during processing have been analyzed in detail by scanning electron microscopy, transmission electron microscopy, and electron microprobe analysis. Tensile properties and failure modes have been analyzed and a strength model that considers solid solution strengthening of Al in the unmelted particles and a rule-of-mixtures behavior for microstructural components is proposed.
引用
收藏
页码：3725 / 3736
页数：12
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