1. Study of seamless tube extrusion of SiCp-reinforced AZ61 magnesium alloy composites.
- Author
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Hwang, Yeong-Maw, Huang, Song-Jeng, and Huang, Yu-San
- Subjects
- *
MAGNESIUM alloys , *METALLIC composites , *TUBES , *TENSILE tests , *SILICON compounds , *METAL microstructure , *FINITE element method , *METAL extrusion - Abstract
This study involves the investigation of the mechanical properties of the extruded tube products with reinforced silicon carbide particulates (SiCp). Finite element analyses are firstly conducted to analyze the plastic flow of the magnesium alloy AZ61 within the die and to investigate the effects of initial billet temperatures on the extrusion loads and final product temperatures. AZ61/SiCp composite ingots reinforced with different weight fractions of SiCp are fabricated by a melt stirring technique. A specially designed die set is used in the extrusion experiments to obtain tubes with uniform thickness distribution in the circumferential direction. The extruded tubes are also heat treated to obtain even better mechanical properties. Finally, tensile tests, Vickers microhardness, tests and microstructure observation are performed on the billets and extruded tubes of AZ61 monolithic alloys and AZ61/SiCp composites. A much smaller grain size and higher tensile strength and hardness are achieved for the extruded AZ61/SiCp composite tubes. [ABSTRACT FROM AUTHOR]
- Published
- 2013
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