ABSTRACT Selective laser melting (SLM) currently uses the micro-fine spherical powder prepared by gas atomisation as a raw material. However, the spherical powder is expensive. In order to reduce the cost, this study first ball mills the pure titanium (CP-Ti) powder of hydrogenation-dehydrogenation (HDH). At a high speed and within a short period, the particle size distribution of the powder at a high rotation speed for 15 min is 12–45 μm with an angle of repose 34.3°. Then, the ball milling of titanium was mixed spherical powder with a wide grain size range up to 100 μm. This study presents the results of using SLM to produce CP-Ti parts starting from powder with mixed powder, in a different ratio between modified powder and spherical powder. The ultimate tensile strength (UTS) of SLM-parts of 8:2 ratio has been improved to 507 MPa, and the UTS of parts of 7:3 ratio has been improved to 522 MPa.

中文翻译：

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球磨处理的氢化脱氢钛粉与球状粉体混合粉末激光选区熔化制备超低成本纯钛

摘要 选区激光熔化（SLM）目前以气体雾化制备的微细球形粉末为原料。然而，球形粉末价格昂贵。为了降低成本，本研究首先对加氢脱氢（HDH）纯钛（CP-Ti）粉进行球磨。在高速和短周期内，高速旋转 15 分钟的粉末粒度分布为 12-45 μm，休止角为 34.3°。然后，钛的球磨是混合球形粉末，粒径范围可达 100 μm。本研究展示了使用 SLM 从粉末和混合粉末开始生产 CP-Ti 零件的结果，改性粉末和球形粉末之间的比例不同。8:2比例的SLM-parts的极限拉伸强度（UTS）提高到507 MPa，