Microstructure and Properties of Pure Tungsten and Tungsten Copper Composites by Laser Additive Manufacturing

Deng Cheng; Jiang Menglong; Zhou Shengfeng

doi:10.15980/j.tzzz.2022.07.003

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Microstructure and Properties of Pure Tungsten and Tungsten Copper Composites by Laser Additive Manufacturing
Vol. 42, Issue 7, Pages: 804-809(2022)
Published： 2022 ，
DOI： 10.15980/j.tzzz.2022.07.003

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Deng Cheng, Jiang Menglong, Zhou Shengfeng. Microstructure and Properties of Pure Tungsten and Tungsten Copper Composites by Laser Additive Manufacturing. [J]. Special Casting & Nonferrous Alloys 42(7):804-809(2022)
DOI：

Deng Cheng, Jiang Menglong, Zhou Shengfeng. Microstructure and Properties of Pure Tungsten and Tungsten Copper Composites by Laser Additive Manufacturing. [J]. Special Casting & Nonferrous Alloys 42(7):804-809(2022) DOI： 10.15980/j.tzzz.2022.07.003.

摘要

采用激光增材制造技术制备了纯钨及钨铜复合材料，通过光学显微镜、扫描电镜和维氏硬度测量仪等表征了其表面形貌、微观结构和硬度，系统分析了粉末特性、激光功率、扫描速率以及铺粉厚度等参数对纯钨制件的组织形貌和力学性能的影响，以及对钨铜复合材料界面结合的影响。通过优化激光功率和扫描速率等加工参数，制备了致密度最高达97.66%

硬度(HV)高达486.23的纯钨制件，以及界面结合良好的钨铜复合材料制件。

Abstract

Pure tungsten and tungsten copper composites were fabricated by laser additive manufacturing. The surface morphology

microstructure and hardness were characterized by optical microscopy

scanning electron microscope and Vickers hardness tester. The influence of parameters

including powder characteristics

laser power

scanning speed and layer thickness on the microstructure and mechanical properties of pure tungsten parts

as well as the interface bonding of tungsten copper composites were systematically analyzed. Pure tungsten parts with relative density up to 97.66% and hardness up to 486.23 HV were produced

and tungsten copper composites with desirable interface bonding were obtained by optimizing the processing parameters.