Development of high thermal conductivity, enhanced strength and cost-effective die-cast Mg alloy compared with AE44 alloy
Résumé
The thermal conductivity (TC) and strength trade-off has been a long-standing dilemma for developing high TC alloys. Here a novel high TC and cost-effective die-cast Mg2.8Al3.8-La0.4Nd alloy was developed with enhanced yield strength (YS) at room temperature (RT) and high temperatures (HT), compared with the commercially widely used die-cast AE44 magnesium alloy. The new alloy provided the TC of 104.0 and 125.9 W/(m$K) separately at RT and 300 o C. Compared with AE44 alloy, the TC was improved by ~13.5%. The new alloy also delivered an excellent YS of 137.1 MPa, ultimate tensile strength (UTS) of 240.2 MPa
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