A study on the microstructure-fracture behavior relations in Al-Si casting alloys
- Toyohashi Univ. of Technology (Japan). Production Systems Engineering Dept.
Of the casting alloys, aluminum-silicon (Al-Si) alloys have been widely used in many industries where the high strength-to-weight ratio in addition to excellent castability, good corrosion resistance as well as low thermal coefficient and high wear resistance are among the properties of engineering interest. Generally, the microstructure of Al-Si alloys is characterized by two phases i.e. Al and Si. Thus, these alloys are a combination of high strength-brittle phase (Si) and low strength-ductile phase (Al). Therefore, it is beyond doubt that the deformation behavior and the mechanical properties are controlled by the microstructural features of the constituent phases. Developing a better understanding of the microstructure, mechanical properties and fracture behavior relationship of these technically important alloys is required to satisfy the need of the design engineer, on one hand, and for increasing the confidence in the cast products, in order to increase the replacing of more fabricated parts with a cast component in many critical stress conditions. Therefore, the present study concerns itself with the effect of the microstructural parameters in the eutectic region of a hypoeutectic Al-Si casting alloy on the tensile properties and the fracture toughness. The relation between the fracture characteristics and the mechanical properties, as well as the microstructural parameters, has also been established.
- OSTI ID:
- 5509551
- Journal Information:
- Scripta Metallurgica et Materialia; (United States), Vol. 30:4; ISSN 0956-716X
- Country of Publication:
- United States
- Language:
- English
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