Abstract Two-body abrasive wear tests of Fe-B alloys with various matrix microstructures were performed using a pin-on-disc tribometer at a normal load of 3 N. The wear behavior was analyzed using scanning electron microscopy (SEM) and color 3D laser scanning microscopy. The results show that the Fe–2 wt% B alloy is mainly composed of a metallic matrix, M2B and M23(C, B)6. A pure pearlitic matrix occurs at a cooling rate of 0.05 °C/s, and a pure martensitic matrix forms at a cooling rate above 0.3 °C/s. Compared to the pearlitic matrix, the martensitic matrix can better support the M2B against fracture and provides higher abrasion resistance for the Fe–2 wt% B alloy. Moreover, with an increase in sliding distance, the abrasion resistance of Fe–2 wt% B alloy decreases slightly at first and then decreases rapidly. To be exact, the M2B is steadily scraped off until the critical sliding distance of 6.06 m is reached, after which the neighboring M2B fractures, leading to high material removal.

中文翻译：

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基体显微组织对FE-2wt%B合金耐磨性的影响

摘要 使用针盘摩擦计在 3 N 的法向载荷下对具有不同基体微观结构的 Fe-B 合金进行了双体磨粒磨损试验。使用扫描电子显微镜 (SEM) 和彩色 3D 激光分析磨损行为扫描显微镜。结果表明，Fe-2 wt% B 合金主要由金属基体 M2B 和 M23(C, B)6 组成。纯珠光体基体以 0.05 °C/s 的冷却速度形成，纯马氏体基体以高于 0.3 °C/s 的冷却速度形成。与珠光体基体相比，马氏体基体可以更好地支撑 M2B 防止断裂，并为 Fe-2 wt% B 合金提供更高的耐磨性。此外，随着滑动距离的增加，Fe-2 wt% B合金的耐磨性先略有下降，然后迅速下降。准确地说，