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《工程(英文)》 >> 2017年 第3卷 第5期 doi: 10.1016/J.ENG.2017.05.012

用于粉末床增材制造的铬镍铁合金粉末特征研究

a Singapore Institute of Manufacturing Technology, Singapore 637662, Singapore
b School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 639798, Singapore

录用日期: 2017-06-29 发布日期: 2017-10-31

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摘要

本研究中使用不同的粉末表征技术对铬镍铁合金的原始粉末和回收粉末在粉末床增材制造(AM)上的流动特性、行为特征进行研究。结果发现,选择性激光熔化(SLM)工艺的粒径分布(PSD)范围通常在15 ~ 63 μm 之间。原始的铬镍铁合粉末的流量约为28 s·(50 g)–1,组装密度是60%。流变测试结果表明,原始粉末与回收粉末相比具有更好的流动性。讨论了两种粉末之间的相互关系。运用铬镍铁合金粉末已经成功打印出了螺旋桨。实验结果表明铬镍铁合金粉末适用于增材制造(AM),本研究为生产增材制造粉末提供参考。

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