Microstructure, grain and nanowire growth during selective laser melting of Ag–Cu/diamond composites

Xin, Chenxing; Zhao, Xiya; Geng, Haoze; Liu, Hao; Li, Yan; Chen, Tao; Gong, Ping

doi:10.1039/d2ra05965g

Cited by 4 publications

(2 citation statements)

References 52 publications

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“…4 Xin et al examined the grain growth and microstructural evolution of Ag-Cu/diamond composites during the SLM process via a thermodynamic analysis; also, this work opened new tracks of high-performance Ag-Cu/diamond MMCs in several application fields. 5 Schnell et al processed diamond-reinforced MMC for abrasive tools with extravagant geometric forms using the powder bed fusion technique (PBF). The results revealed the effect of different diamond fractions on the absorbed energy.…”

Section: Introductionmentioning

confidence: 99%

Influence of tungsten carbide-cobalt reinforcement on flexural behavior of iron-based composite developed through microwave

Pal

Gupta

Singh

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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The flexural behavior of iron-based composite castings has been analyzed under three-point loading conditions. The metal matrix composite casting of five varying compositions of powders by weight, that is, SS316, SS316+15EWAC, SS316+15EWAC+5WC−12Co, SS316+15EWAC+10WC−12Co, and SS316+15EWAC+15WC−12Co has been cast in a domestic microwave oven of maximum power and frequency of 0.9 kW and 2.45 × 103 MHz respectively. The casting of size 30 × 6 mm2 is prepared. The prepared sample’s mechanical properties, such as ultimate peak load, flexural strength, strain at peak load, strain at break and flexural modulus, are tested on Dak System UTM having load cell 10 kN as per ASTM 1161-18 standard. The flexural strength and peak load for SS316+15EWAC+10WC−12Co, strain at peak load for SS316+15EWAC+5WC−12Co, and flexural modulus and microhardness for SS316+15EWAC+15WC−12Co were found maximum value. The maximum microhardness value is obtained in the carbide phase. The microstructure of the cast samples shows equiaxed grain growth with identical melting of the matrix. The XRD pattern of the samples confirmed the presence of various intermetallic and carbide phases.

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Section: Introductionmentioning

confidence: 99%

Influence of tungsten carbide-cobalt reinforcement on flexural behavior of iron-based composite developed through microwave

Pal

Gupta

Singh

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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show abstract

“…11 Xin et al examined the grain growth and microstructural evolution of Ag–Cu/diamond composites during the SLM process via a thermodynamic analysis; also this work opened new tracks of high-performance Ag–Cu/diamond MMCs in several application fields. 12 Ostolaza et al claimed laser-directed energy deposition (L-DED) technique is more suitable for multi-material additive manufacturing (AM) than conventional processes. The L-DED is applicable for alloy design, functionally graded materials (FGM), and MMC.…”

Section: Introductionmentioning

confidence: 99%

Development of iron-based composite materials through electromagnetic radiations in a domestic microwave oven

Pal

Gupta

Singh

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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Microwave hybrid heating, a novel technique, is used to develop iron-based alloy (SS316), SS316+10EWAC1004 (nickel-based), and SS316+10EWAC1004+5Cr7C3 composite castings. The domestic microwave having a frequency of 2.45 × 103 MHz and a power of 0.9 kW, is used with a variable exposure time of microwave radiations. The microwave interaction procedure with the metallic powder is discussed to optimize the exposure time and temperature. A microstructure study of developed castings revealed the uniform melting of matrix and EWAC1004 with an identical dispersion of Cr7C3. The X-ray diffraction results revealed various intermetallic (Ni3Fe, Ni2Si, Cr2Ni3, MoNi4, Fe3Si, Fe2Si, CrFeNi) and hard carbides (Fe3C, Cr3C2, Cr23C6) phases. The maximum average micro-hardness is for the SS316+10EWAC1004+5Cr7C3 composite, followed by SS316+10EWAC1004. The established composite casting had a hardness of around 2 times that of the commercial SS316. The maximum density of 97% was found for Iron-based SS316-based. The grain size of microwave-processed SS316, SS316+10EWAC, and SS316+10EWAC +5Cr7C3 specimens is found to be 21 ± 4 µm, 18 ± 3 µm, and 17 ± 2 µm, respectively. It has been observed that reinforced phases hinder grain growth, and hence grain size reduces significantly. In comparison, commercial SS316 had a grain size of 31 ± 6 µm. The ASTM B-276 standard is used to determine pores that are of the order of 1.98%.

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Recent progress in the fabrication of diamond joints/coatings/composites via laser technology

Qin,

Jing,

Zhu

et al. 2023

Weld World

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Microstructure, grain and nanowire growth during selective laser melting of Ag–Cu/diamond composites

Abstract: Selective laser melting technique is a viable alternative to fabricating metal matrix composites with controllable structures; however, its implementation remains challenging because of the unpredicted defects arising from the reinforcement.

Cited by 4 publications

References 52 publications

Influence of tungsten carbide-cobalt reinforcement on flexural behavior of iron-based composite developed through microwave

Influence of tungsten carbide-cobalt reinforcement on flexural behavior of iron-based composite developed through microwave

Development of iron-based composite materials through electromagnetic radiations in a domestic microwave oven

Recent progress in the fabrication of diamond joints/coatings/composites via laser technology

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