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The effect of rare-earth elements (REs) on formation and elastic properties of strengthening precipitates in boriding Mg–RE alloys was determined by first-principles calculations. The preferential formation of a B12-cluster during boriding process results in the appearance of the only REB12 strengthening phases. The REB12 compounds possess the high hardness, which is mainly associated with the strong...
The effect of Cal0.5W0.5 (CAW) compound on the grain refinement of Mg-Al based alloys was investigated. The results show that CAW compound is an effective and active grain refiner. The grain size of binary Mg-Al alloys is more than 500 μm, and it is changed to about 110 μm with a 1 wt.% CAW addition. The hardness increased with the decease of grain size monotonously. The mechanical properties are...
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