摘要
对Al-Mg -Si合金中主要析出相β(Mg2 Si)以及纯硅晶胞的键电子密度计算 ,表明硅晶胞中最强的Si-Si键nA 比β(Mg2 Si)相的Mg -Si最强键nA 要强 2倍 ,相应的最强键密度ρ也大 2倍 。
Through the calculation of the electronic bonding density of the main equilibrium phase β(Mg_2Si)and pure Si cell, the results show thatthe strongest bond n_A in Si cell is more than three times of that in Mg_2Si cell, and the ρ ( electronic bonding density) in the Si cell is also more than three times of that in the Mg_2Si cell. These are the main reason that influences the growth of grain of Mg_2Si and the mechanical property of alloy such as hardness and intensity.
出处
《轻金属》
CSCD
北大核心
2005年第2期55-57,共3页
Light Metals
基金
国家自然科学基金项目 (5 0 0 610 0 1)
广西科学基金项目 (桂科配 0 13 5 0 0 6
桂科自 0 0 0 70 2 0
桂科基 0 3 42 0 0 4-1)
广西"十百千人才工程"项目 (2 0 0 12 0 7)资助
