Impurity elements such as Fe, Ni, Zn, and Ca introduced in the recycling process of regenerated cemented carbide affect the structure and mechanical properties of the regenerated cemented carbide. Unlike other impurity elements, Fe and Co belong to group VIII elements and have similar chemical and physical properties. The nature of Fe is closely related to the size and type of waste cemented carbide during recycling and pollution observed during production. Waste cemented carbide is processed via zinc melting to obtain WC, and the regenerated YG10 cemented carbide was prepared via low‐pressure sintering in this study. The effects of impurity element Fe on the microstructure and mechanical properties of a regenerated cemented carbide were studied via X‐ray diffraction, scanning electron microscopy, magnetic property tests, and mechanical property tests. This study demonstrates that an increase in the Fe content leads to a decrease in the bending strength and hardness; further, the mechanism of grain growth caused by the increase in Fe content is revealed. In addition, the mechanism of decreasing wear resistance of the regenerated YG10 cemented carbide with increasing Fe content was discussed. The introduction of Fe as an impurity has evident adverse effects on the mechanical properties of the alloy. To satisfy the production requirements, the Fe content in the mixed powder must to be retained within 0.5%.

中文翻译：

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Fe含量对再生硬质合金力学性能的影响

在再生硬质合金的再循环过程中引入的杂质元素，例如Fe，Ni，Zn和Ca，会影响再生硬质合金的结构和机械性能。与其他杂质元素不同，Fe和Co属于VIII族元素，具有相似的化学和物理性质。铁的性质与回收过程中废硬质合金的大小和类型以及生产过程中观察到的污染密切相关。通过锌熔炼处理废硬质合金以获得WC，本研究中通过低压烧结制备了再生的YG10硬质合金。通过X射线衍射，扫描电子显微镜，磁性能测试，研究了杂质元素Fe对再生硬质合金组织和力学性能的影响，和机械性能测试。这项研究表明，Fe含量的增加会导致弯曲强度和硬度的降低。此外，揭示了由铁含量增加引起的晶粒长大的机理。此外，还讨论了随着铁含量的增加，再生的YG10硬质合金的耐磨性降低的机理。引入铁作为杂质对合金的机械性能具有明显的不利影响。为了满足生产要求，必须将混合粉末中的Fe含量保持在0.5％以内。探讨了随着铁含量的增加，再生YG10硬质合金的耐磨性降低的机理。引入铁作为杂质对合金的机械性能具有明显的不利影响。为了满足生产要求，必须将混合粉末中的Fe含量保持在0.5％以内。探讨了随着铁含量的增加，再生YG10硬质合金的耐磨性降低的机理。引入铁作为杂质对合金的机械性能具有明显的不利影响。为了满足生产要求，必须将混合粉末中的Fe含量保持在0.5％以内。