A kind of high nb-tial alloy adding nanometer yttrium oxide and preparation method thereof
A nano-yttrium oxide and alloy technology, which is applied in the field of intermetallic compounds and its preparation process, can solve the problems of poor high-temperature mechanical properties and weak creep resistance of TiAl alloys, so as to increase the nucleation rate, improve mechanical properties, and refine Effect of Grain Size
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specific Embodiment approach 1
[0028] Specific Embodiment 1: In this embodiment, a high Nb-TiAl alloy added with nanometer yttrium oxide, the molar percentage of the alloy composition is: 45% to 48% for Al, 6% to 10% for Nb, and 2.5% for V %~3.5%, Nano Y 2 o 3 0.05% to 3% and the rest of Ti.
specific Embodiment approach 2
[0029] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the mole percentage of the alloy composition is: 45% for Al, 6% for Nb, 2.5% for V, nanometer Y 2 o 3 Ti is 0.15% and the balance. Others are the same as in the first embodiment.
specific Embodiment approach 3
[0030] Specific embodiment three: a kind of preparation method of adding the high Nb-TiAl alloy of nanometer yttrium oxide described in specific embodiment one, specifically carry out according to the following steps:
[0031] 1. Cleaning: remove the scale of titanium rod, titanium sponge, high-purity aluminum, aluminum-niobium master alloy and aluminum-vanadium master alloy, perform ultrasonic cleaning in alcohol, and blow dry;
[0032] 2. Weighing: Weighing nanometer Y 2 o 3 Powder, titanium rod after step 1 treatment, titanium sponge, high-purity aluminum, aluminum-niobium master alloy and aluminum-vanadium master alloy, nano Y 2 o 3 The powder is pressed into multiple yttrium oxide prefabricated blocks;
[0033] Or weigh nano Y 2 o 3 Powder, dispersed metal powder, titanium rod after step 1 treatment, titanium sponge, high-purity aluminum, aluminum-niobium master alloy and aluminum-vanadium master alloy, nanometer Y 2 o 3 The powder and dispersed metal powder are unif...
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