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Al的添加对AlxCoCrFeNi高熵合金结晶过程的影响
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Abstract:
本文采用分子动力学方法对AlxCoCrFeNi高熵合金中不同Al含量(x = 0、5、10、15、20、25、30)的模型的凝固过程进行模拟实验。结果表明，Al含量的增加会使AlxCoCrFeNi高熵合金的结晶度和结晶度降低，并且当Al的含量在不同区间时，会使AlxCoCrFeNi高熵合金发生结晶时出现的晶粒结构不一样：在Al含量较低时形成FCC单相晶粒，在含量中等时形成FCC BCC双相结构，在Al含量较高时会形成非晶结构。
In this paper, the crystallization process of AlxCoCrFeNi high-entropy alloys modeled with different Al contents (x = 0, 5, 10, 15, 20, 25, and 30) is simulated using molecular dynamics method. The results show that the increase of Al content decreases the crystallinity and crystallinity of AlxCoCrFeNi high-entropy alloys, and when the content of Al is in different intervals, it will make the grain structure appearing in AlxCoCrFeNi high-entropy alloys when crystallization occurs is not the same: FCC single-phase grains are formed when the content of Al is low, the FCC BCC dual-phase structure is formed when the content is medium, and in the case of Al at higher Al content, amorphous structure is formed.
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