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首页> 外文期刊>Journal of Materials Engineering and Performance >Effect of High Configuration Entropy and Rare Earth Addition on Boride Precipitation and Mechanical Properties of Multi-principal-Element Alloys
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Effect of High Configuration Entropy and Rare Earth Addition on Boride Precipitation and Mechanical Properties of Multi-principal-Element Alloys

机译：高型熵和稀土添加对多主元合金硼化物沉淀和力学性能的影响

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摘要

A series of multi-principal-element (MPE) alloys have been prepared by adding Ni, Mn, Al, Cu and Y into the reference CoCrFe-B alloy. The microstructure and mechanical properties of these MPE alloys have been investigated thoroughly. It is found that the addition of the elements can inhibit boride precipitation in the designed alloys and the solid solution strengthening effect induced by interstitial boron atoms is more significant than that by boride precipitation. The MPE alloys with the fcc phase as the main solid solution phase have a higher boron solubility and hence less boride precipitation, than those with the bcc phase as the main solid solution phase. The addition of yttrium can improve the boron solubility, decrease boride precipitation, control the boride morphology and, importantly, simultaneously improve the compressive strength and ductility of boron-containing MPE alloys.
机译：在CoCrFe-B合金中加入镍、锰、铝、铜和钇，制备了一系列多主元素（MPE）合金。对这些MPE合金的微观结构和力学性能进行了深入研究。研究发现，元素的加入可以抑制硼化物在设计合金中的析出，间隙硼原子引起的固溶体强化效应比硼化物析出更为显著。与以bcc相为主固溶体相的MPE合金相比，以fcc相为主固溶体相的MPE合金具有较高的硼溶解度，因此硼化物析出较少。钇的加入可以提高硼的溶解度，减少硼化物的析出，控制硼化物的形态，同时提高含硼MPE合金的抗压强度和延展性。

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