机械合金化多元非晶态合金形成规律研究

Study of the Formation Regularity of the Multi-Component Amorphous Alloys by MA

分别以Miedema坐标、合金自扩散激活能△Hs与形成焓△Hf为参数坐标,将多元合金分解为若干相应的二元合金叠加,对有实验结果的128个二元和153个多元机械合金化(MA)非晶合金的形成规律进行了研究.结果:以上2种坐标中,分别可由一直线或曲线将非晶形成与非形成区分割,方程为:Miedema坐标,二元系,y=2.8600x+0.22;多元系,y=2.790 0x+0.27,总区分率均为80%;△Hs～△Hf坐标,二元系,y=-0.0005x2+0.20x-3;多元系,.y=-0.000 5x2+0.21x-25,总区分率分别为85%和83%.合金包含过渡族金属、涵盖非过渡族金属及类金属,并扩展至多元系,同时与已有定性以及半定量结果进行了比较.

The Miedema coordinates and DeltaH(s) (the difference of self diffusion activation energy)similar toDeltaH(f) (the difference of formation enthalpy) were used respectively as the parameter coordinates, and the multi-component alloys were analyzed into several corresponding binary alloys and added then. The research was made on the formation regularity of 128 binary and 153 multi-component amorphous alloys by mechanism alloying (MA). The results show that in the two coordinates mentioned above, a line or a curve can divide the areas of crystal and amorphous, and the line and curve formula are: in Miedema coordinates, binary y = 2.8600 x + 0.22; multi-component y = 2.7900 x + 0.27; the rates of total differentiation all are 80%;. in DeltaH(s) similar to DeltaH(f) coordinates: binary y = 0.0005 x(2) + 0.20x-23; multi-component y = 0.0005 x(2) + 0.21x-25; the rates of total differentiation are 85% and 83% respectively. The study covers the range of transitional. non-transitional. and metalloid. the study is also enlarged to the multi-component alloys. Meanwhile, a comparison is also made between the results by qualitative and semi-quantitative research.