研究目的
Investigating the processing optimization, interfacial characterization, and mechanical properties of 316L/CuSn10 multi-material composites fabricated by selective laser melting (SLM).
研究成果
The study successfully fabricated 316L/CuSn10 multi-material composites with good interfacial bonding strength using SLM. The interfacial transition region showed sufficient agitation of molten pools and diffusion of elements, leading to mechanical properties superior to those of steel/copper alloys fabricated by other methods. The research highlights the potential for industrial applications of steel/copper multi-materials by SLM.
研究不足
The study acknowledges the challenges in fabricating steel/copper multi-material parts due to large differences in thermal-physical properties, which can lead to poor bonding strength and cracking. The research also notes the need for further optimization of process parameters to improve interfacial bonding without compromising overall mechanical properties.
1：Experimental Design and Method Selection:
The study adopts selective laser melting (SLM) to fabricate 316L/CuSn10 multi-material composites. The methodology includes optimizing process parameters for CuSn10 alloy to achieve the highest density and selecting optimal parameters for multi-material fabrication.
2：Sample Selection and Data Sources:
Gas-atomized 316L and CuSn10 powders were used as raw materials. The particle size distribution and chemical composition of the powders were analyzed.
3：List of Experimental Equipment and Materials:
HK M125 SLM equipment, SEM (JSM-7600F, JEOL, Japan), Vickers hardness tester (Wolpert Wilson Instruments 432 SVD, China), Zwick/Roell Z020 universal testing machine.
4：Experimental Procedures and Operational Workflow:
The experiment involved fabricating 316L/CuSn10 specimens with optimized SLM parameters, followed by microstructure characterization and mechanical properties testing.
5：Data Analysis Methods:
Microstructure was characterized using SEM and EBSD. Mechanical properties were tested including Vickers hardness, tensile strength, and flexural strength. Data analysis was performed using HKL Channel 5 software for EBSD data.
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