Abstract We report on the effects of B additions to Alloy 617 on its high-temperature oxidation behavior and on the spallation of oxide scales. Alloy 617 and a B-added derivative (Alloy 617B) were oxidized at 1050 °C in air and comparatively studied. Cr 2 O 3 scales formed on both alloys with a spinel phase and a Ti-rich oxide on top. While both alloys showed similar scale growth kinetics, Alloy 617B showed substantially enhanced resistance to oxide scale spallation. B segregation at Cr 2 O 3 grain boundaries, detected by atom probe tomography, was found to be the reason for the enhanced spallation resistance of Alloy 617B.

中文翻译：

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添加硼增强617合金上氧化皮的抗剥落性

摘要 我们报告了在 617 合金中添加 B 对其高温氧化行为和氧化皮剥落的影响。合金 617 和添加 B 的衍生物（合金 617B）在 1050 °C 空气中氧化并进行了比较研究。Cr 2 O 3 鳞片在两种合金上形成，顶部具有尖晶石相和富钛氧化物。虽然两种合金显示出相似的氧化皮生长动力学，但合金 617B 显示出显着增强的抗氧化皮剥落能力。通过原子探针断层扫描检测到的 Cr 2 O 3 晶界处的 B 偏析被发现是合金 617B 抗散裂性增强的原因。