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Author:

黄炼 (黄炼.) | 高坤元 (高坤元.) (Scholars:高坤元) | 文胜平 (文胜平.) | 黄晖 (黄晖.) (Scholars:黄晖) | 王为 (王为.) | 聂祚仁 (聂祚仁.) (Scholars:聂祚仁)

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Abstract:

本文运用固体与分子经验电子理论(EET)计算了Al_3M(M=Ti,Zr,Hf)的3种晶体结构(L1_2,D0_(22),D0_(23))的价电子结构和最强键键能,并依此对各种结构的相稳定性及相变顺序做半定量分析.结果显示:各平衡相,即D0_(22) Al_3Ti,D0_(23)-Al_3Zr和D0_(22)-Al_3Hf,其最强键键能分别为57.7,71.6和75.6 kJ/mol,与对应平衡相的熔点高低次序一致,确认了EET计算结果的可靠性.使用这一方法计算获得Al_3Ti,Al_3Zr和Al_3Hf的最强键键能,依此得出各业稳相向平衡相的转变顺序与实验结果及第一性原理计算的结果相同.EE...

Keyword:

Al_3M(M=Ti Zr 价电子结构 亚稳相 Hf) 相的稳定性

Author Community:

  • [ 1 ] 北京工业大学材料科学与工程学院

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Source :

金属学报

Year: 2012

Issue: 04

Volume: 48

Page: 492-501

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 9

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