The effect of Al element content on the mechanical properties of Ti-x Al(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-xAl 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.
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