Effect of selective laser melting process parameters on the microstructure and properties of WCu20 composite

IF 4.2 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

International Journal of Refractory Metals & Hard Materials Pub Date : 2025-02-28 DOI:10.1016/j.ijrmhm.2025.107130

Fenqiang Li , Jiawei Shu, Qianting Wang , Jiehao Ding, Xin Xu, Jun Zhao

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引用次数: 0

Abstract

Tungsten‑copper (WCu) composites hold great promise as electrically conductive materials. However, traditional manufacturing methods, such as powder metallurgy, are unsuitable for producing dense and complex WCu components. Recently, additive manufacturing methods have been explored for preparation, but variations in process parameters significantly affect the quality of the components. Determining optimized process parameters for quality products is a challenging yet crucial issue. In this study, Selective Laser Melting (SLM) technology was used to fabricate W-Cu20wt.% composites. The effects of laser power, scanning speed, hatch spacing, and layer thickness on the density and microhardness of WCu20 composites were explored. The densification mechanism of WCu20 composites during the SLM process was discussed. The results indicated that using a laser power of 320 W, scanning speed of 400 mm/s, layer thickness of 30 μm, and hatch spacing of 40 μm produced a dense and uniformly structured WCu20 composite successfully, with a maximum relative density of up to 98.1 %. W-Cu20 specimens with a density above 96 % exhibited hardness levels greater than 230 HV, with the optimum hardness being 256 HV.

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来源期刊

$International Journal of Refractory Metals & Hard Materials$

International Journal of Refractory Metals & Hard Materials 工程技术-材料科学：综合

CiteScore

7.00

自引率

13.90%

发文量

236

审稿时长

35 days

期刊介绍： The International Journal of Refractory Metals and Hard Materials (IJRMHM) publishes original research articles concerned with all aspects of refractory metals and hard materials. Refractory metals are defined as metals with melting points higher than 1800 °C. These are tungsten, molybdenum, chromium, tantalum, niobium, hafnium, and rhenium, as well as many compounds and alloys based thereupon. Hard materials that are included in the scope of this journal are defined as materials with hardness values higher than 1000 kg/mm2, primarily intended for applications as manufacturing tools or wear resistant components in mechanical systems. Thus they encompass carbides, nitrides and borides of metals, and related compounds. A special focus of this journal is put on the family of hardmetals, which is also known as cemented tungsten carbide, and cermets which are based on titanium carbide and carbonitrides with or without a metal binder. Ceramics and superhard materials including diamond and cubic boron nitride may also be accepted provided the subject material is presented as hard materials as defined above.