Abstract Ti-5553, with its high strength and toughness, has been widely used in the aerospace industry as a novel aerospace alloy. High hardness, strong chemical affinity, and low thermal conductivity are the main reasons for its classification as a difficult-to-cut material. Although significant work has been performed to analyze the machinability of Ti-5553, the oxidation behavior of Ti-5553 and tool materials during the cutting process has received little attention. For this study, cemented carbide (H13A) and PCBN (BZN9000) were selected as cutting tool materials with Ti-5553 as a workpiece material. Oxidation simulation experiments were carried out in a high-temperature resistance furnace. Changes in oxidation mass gain and hardness were measured and recorded. X-ray diffraction and scanning electron microscopy were employed to detect the oxidation products and micro-morphology of the oxide layer, respectively. Based on these measurements, the oxidation behavior of the materials was analyzed and the causes of oxidative wear of the tool and workpiece materials during the cutting process were identified to provide theoretical support for Ti-5553 cutting and tool development.

中文翻译：

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硬质合金和PCBN刀具切削Ti-5553时氧化行为的实验研究

摘要 Ti-5553作为一种新型的航空航天合金，具有高强韧性，在航空航天工业中得到了广泛的应用。硬度高、化学亲和力强、导热系数低是其被归类为难切削材料的主要原因。尽管已经进行了大量工作来分析 Ti-5553 的可加工性，但在切削过程中 Ti-5553 和刀具材料的氧化行为却很少受到关注。在本研究中，选择硬质合金 (H13A) 和 PCBN (BZN9000) 作为刀具材料，以 Ti-5553 作为工件材料。氧化模拟实验在高温电阻炉中进行。测量并记录氧化质量增加和硬度的变化。采用X射线衍射和扫描电子显微镜分别检测氧化层的氧化产物和微观形貌。基于这些测量，分析了材料的氧化行为，确定了刀具和工件材料在切削过程中氧化磨损的原因，为Ti-5553切削和刀具开发提供理论支持。