Interfacial reaction in squeeze cast SiCw/AZ91 magnesium alloy composite

Journal Article · Thu Aug 15 04:00:00 EDT 1996 · Scripta Materialia

DOI:https://doi.org/10.1016/1359-6462(96)00169-8· OSTI ID:271635

Wu, K; Zheng, M; Zhao, M; Yao, C ^[1]; Li, J ^[2]

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1. Harbin Inst. of Tech. (China). School of Materials Science and Engineering
2. Academic Sinica, Shengyang (China). Lab. of Atomic Imaging of Solids

It is well known that the interface between the matrix and the reinforcement plays an important role in the properties of metal matrix composites (MMCs). Interfacial structure and its effect on the properties of aluminum matrix composites have been extensively studied. The interface of Mg-MMCs is very different from that of Al-MMCs, due to high reactivity of magnesium. As magnesium have natural affinity for wetting or bonding to ceramic reinforcement, and furthermore, magnesium does not form any carbides, SiC is one of the most suitable reinforcement for magnesium matrix composite, SiCw/AZ91 magnesium matrix composites have excellent properties compared with other discontinuously reinforced Mg-MMCs. The aim of the present study is to investigate the interfacial reactions in SiCw/AZ91 composites prepared by squeeze casting method, with particular emphasis on the morphology, structure and the formation mechanisms of the reaction products using electron microscopy, in order to provide a better understanding of the relationship between the interfacial structure and the properties of the composites.

• OSTI ID: 271635
• Journal Information: Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 4 Vol. 35; ISSN 1359-6462; ISSN XZ503X
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
36 MATERIALS SCIENCE
AEROSPACE INDUSTRY
ALUMINIUM ALLOYS
AUTOMOBILES
BONDING
CHEMICAL REACTIONS
COMPOSITE MATERIALS
ELECTRON MICROSCOPY
INTERFACES
MAGNESIUM BASE ALLOYS
MANGANESE ADDITIONS
MECHANICAL PROPERTIES
MICROSTRUCTURE
MORPHOLOGY
SILICON ADDITIONS
SILICON CARBIDES
THERMAL EXPANSION
WEAR RESISTANCE
WETTABILITY
ZINC ADDITIONS