Abstract Isothermal oxidation was conducted at 900 °C to investigate the synergistic effect of B and Y on the oxidation behavior of Ti44Al6Nb1Cr2 V alloy. The results indicated that Ti44Al6Nb1Cr2V0.15Y0.1 B possessed superior oxidation resistance. B and Y refined the crystalline particles size and reduced the oxygen activity. As a results, the formation of TiO 2 and vanadium oxides was suppressed. The reduction of dissolved oxygen in the alloy promoted the selective oxidation of Al. Meanwhile, oxide pegs were formed at the interface of oxide scale and Ti44Al6Nb1Cr2V0.15Y0.1 B alloy. Therefore, the spalling resistance of the oxide scale was enhanced by adding B and Y.

中文翻译：

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B和Y对TiAl-Nb-Cr-V合金等温氧化行为的协同作用

摘要 为了研究B和Y对Ti44Al6Nb1Cr2 V合金氧化行为的协同作用，在900 ℃下进行等温氧化。结果表明，Ti44Al6Nb1Cr2V0.15Y0.1 B 具有优异的抗氧化性。B 和 Y 细化了结晶粒径并降低了氧活性。结果，抑制了TiO 2 和钒氧化物的形成。合金中溶解氧的减少促进了铝的选择性氧化。同时，在氧化皮与Ti44Al6Nb1Cr2V0.15Y0.1 B合金的界面处形成了氧化桩。因此，通过添加 B 和 Y 增强了氧化皮的抗剥落能力。