Study of the influence of mischmetal additions to Al-7Si-0.3Mg (LM 25/356) alloy

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Regional Research Lab , Trivandrum, India [1 ]
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Metall Mat Trans A Phys Metall Mat Sci | / 5卷 / 1283-1292期
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Addition reactions - Chemical modification - Electric conductivity - Eutectics - Fracture toughness - Magnesium - Mechanical properties - Metallographic microstructure - Metals - Silicon - Strontium;
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摘要：
This article deals with the effect of 0.25-1.5 wt pct mischmetal (MM) addition on the mechanical properties, microstructure, electrical conductivity, and fracture behavior of cast Al-7Si-0.3Mg (LM 25/356) alloy. Modification of eutectic silicon by MM is compared with strontium modification in terms of microstructure, mechanical properties, and fading behavior. Loss of magnesium encountered on holding the molten alloy and its resultant effect on mechanical properties of alloys modified with MM and Sr are compared with those in the unmodified alloy.
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