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The alloy ingots with the compositions of Nb-16Si-22Ti-3Cr-3Al-2Hf (at.%) and Nb-16Si-22Ti-3Cr -3Al-2Hf (at.%)+1.5at%Zr+0.01 at.%Mg were prepared by the electric arc melting technique. The ingots were heat treated in argon atmosphere at 1450 °C for 100 h and with furnace cooling. The phases in the two alloys were investigated by X-ray diffraction (XRD), and the result showed that the main phases in...
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