Abstract In this study, micro machinability of Mg5Sn4Zn (TZ54) alloy produced by a hot-pressing process (one of the powder metallurgy methods) is investigated. For this purpose, micro-milling experiments were carried out, considering different cutting parameters. In order to determine the appropriate cutting parameters, the variation of cutting forces, surface quality and burr width were investigated. The cutting forces obtained in micro-milling of the TZ54 alloy are relatively small compared to other biomedical materials. In terms of both cutting forces and surface roughness, the minimum chip thickness is between 7% and 34% of the tool edge radius. However, compared to alloys such as Ti6Al4V and 316 L, the burr width is about 80% smaller. An important contribution of the study is that the minimum chip thickness (0.1 μm) has been confirmed in terms of both cutting force and surface roughness. In addition, even at high material removal rates, the minimum cutting forces are important findings of the study. The predominant wear mechanism in the cutting tool is abrasive wear. In view of tool life, surface roughness and burr formation, it is envisaged that the TZ54 alloy can be an easy machinable, alternative biomedical material.

中文翻译：

---

粉末冶金生物医用Tz54镁合金微端铣削

摘要 在这项研究中，研究了通过热压工艺（粉末冶金方法之一）生产的 Mg5Sn4Zn (TZ54) 合金的显微切削加工性。为此，考虑到不同的切削参数，进行了微铣削实验。为了确定合适的切削参数，研究了切削力、表面质量和毛刺宽度的变化。与其他生物医学材料相比，TZ54 合金微铣削获得的切削力相对较小。就切削力和表面粗糙度而言，最小切屑厚度在刀具刃口半径的 7% 到 34% 之间。但是，与 Ti6Al4V 和 316 L 等合金相比，毛刺宽度要小 80% 左右。该研究的一个重要贡献是最小切屑厚度 (0. 1 μm) 已在切削力和表面粗糙度方面得到确认。此外，即使在高材料去除率下，最小切削力也是该研究的重要发现。切削刀具的主要磨损机制是磨粒磨损。考虑到刀具寿命、表面粗糙度和毛刺形成，可以设想 TZ54 合金是一种易于加工的替代生物医学材料。