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研究了Ti—Al—Sn—Zr系合金,重点讨论在1000°F时的蠕变强度和蠕变作用后的塑性保持情况。若%Al+1/3×%Sn+1/6×%Zr+10×%0≤9,合金的“稳定性”是可以保证的。我们发现Ti—6Al—2Sn—2Zr是蠕变比强度最佳的合金。钛的合金化行为与四价的“金属键价”一致,同时与1.5价的“合金化结构价”一致。钛和铝的化合已证实是共价结合的。通过lV_BV_B和Vl_B族元素稀释α溶性添加剂就在很大程度上消除了铝脆现象的发生。Ti—6Al—2Sn—4Zr—2Mo合金具有良好的热强度,在850°—1050°F下,如果这种合金的变形量和变形速度不大,那末,它将遵守一般的蠕变率方程式; (?)=Aexp[-(H’-Bб~*)/(RT)]
Ti-Al-Sn-Zr alloys were investigated, focusing on the creep strength at 1000F and the plastic retention after creep. If the “Al + 1/3 ×% Sn + 1/6 ×% Zr + 10 ×% 0 ≤ 9, the stability of the alloy can be guaranteed. We found that Ti-6Al-2Sn-2Zr is the best creep strength alloy. The alloying behavior of titanium is consistent with the tetravalent ”metal bond“ and is consistent with the 1.5-valent ”alloying structure". The combination of titanium and aluminum has proved to be covalently bound. Dilution of α-soluble additives by the elements VV_BV_B and Vl_B largely eliminated the occurrence of aluminum embrittlement. The Ti-6Al-2Sn-4Zr-2Mo alloy has good thermal strength and will follow normal creep rate equations at 850 ° -1050 ° F if the alloy is not deformed and deformed much; (?) = Aexp [- (H’-Bб ~ *) / (RT)]