Strength and ductility of novel Mg-8Sn-1Al-1Zn alloys extruded at different speeds |
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Authors: | W.L. Cheng H.S. KimB.S. You B.H. KooS.S. Park |
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Affiliation: | a Changwon National University, Changwon 641-773, Republic of Koreab Korea Institute of Materials Science, Changwon 642-831, Republic of Koreac Ulsan National Institute of Science and Technology, Ulsan 689-798, Republic of Korea |
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Abstract: | A novel Mg-8Sn-1Al-1Zn alloy developed for high-speed extrusion was successfully extruded at speeds in a range of 2-10 m/min at a temperature of 250 °C. The effect of extrusion speed on the microstructure and tensile properties of the extruded alloys was investigated. Grain size, recrystallization fraction and texture were found to be greatly affected by the extrusion speed, resulting in tensile properties showing lower strength and ductility as the extrusion speed increased. The strength and ductility of the extruded alloys are also discussed in terms of the formation of double twins during the tensile test. |
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Keywords: | Metals and alloys Magnesium Extrusion |
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