【摘要】 采用统计拟合法和合金价电子理论计算法研究了Al元素含量对Ti-xAl(x=1、4、6、8,w/%)合金固溶体力学性能的影响。结果表明，随着Al元素含量的增加，Ti-xAl合金硬度和强度均呈现抛物线向上增加的趋势。基于合金价电子理论计算了合金价电子结构参数，建立了Al元素含量对Ti-x Al合金硬度及抗拉强度影响的定量计算关系模型。显微硬度、抗拉强度理论计算值与实验值的误差平均值分别为4.9631%、6.3520%，二者吻合较好。更多还原

【Abstract】 The effect of Al element content on the mechanical properties of Ti-xAl(x = 1, 4, 6, 8, mass fraction, %)alloy solid solutions was studied by statistical fitting method and theoretical calculation method derived from alloy valence electron theory. The results show that with the increase of Al element content, the hardness and strength of Ti-xAl alloy exhibit a trend of parabolic increase. Based on the alloy valence electron theory, the valence electron structure parameters of Ti-x Al alloy are calculated, and the quantitative model of the influence of Al element content on the hardness and tensile strength in Ti-x Al alloy is established. The average error values of micro-hardness and tensile strength are 4.9631% and 6.3520%, respectively, which are in good agreement.更多还原