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金属学报  1989 

制备条件对非晶态Fe_(78)B_(13)Si_9合金的热膨胀各向异性的影响

, PP. 102-106

Keywords: 非晶态Fe_(78)B_(13)Si_9合金,热膨胀各向异性

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Abstract:

本文研究了不同条件下形成的非易态Fe_(78)B_(13)Si_9合金在长轴和短轴方向上的热膨胀。结果表明,在所有条件下均存在热膨胀的各向异性。热膨胀系数随着冷却速度的增加而增加,但其各向异性减小;随着熔体喷铸温度的提高两者均减小。在热循环的作用下,短轴方向的热膨胀系数及其各向异性均减小;而在长轴方向的热膨胀系数却增大。我们认为热膨胀各向异性来源于原子交互作用力的方向性、原子振动频率和短程有序结构或缺陷的方向性。

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