Selective laser melting of SiCp/Al composites: Densification, microstructure, and mechanical and tribological properties

Xie, Houbo; Jia-lian, Zhang; Li, Faliang; Yuan, Gaoqian; Zhu, Qing; Jia, Quanli; Zhang, Haijun; Zhang, Shaowei

doi:10.1016/j.ceramint.2021.07.263

Cited by 34 publications

(11 citation statements)

References 62 publications

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“…Surprisingly, the maximum microhardness value of the as-formed B 4 C p /Al composite samples (180 HV 0.1 ) was about six times as high as that of the Al alloy sample (31 HV 0.1 ), demonstrating the great effect of B 4 C particle reinforcement on the microhardness of the Al matrix. Similar effects were also found in the cases of SiC p /Al [ 23 , 33 ], (TiC + TiB 2 )/Al [ 34 ], SiC p /A365 [ 35 ] and TiC/Ni [ 36 ] composites prepared via SLM.…”

Section: Resultssupporting

confidence: 72%

“…Similarly to the case of SiC p /Al composite preparation, the SLM process in the present case is also believed to be dominated by the complete melting–solidification mechanism [ 23 ]. Initially, a molten pool was formed under the laser irradiation.…”

Section: Resultsmentioning

confidence: 97%

“…Shown in Figure 3 a are the XRD patterns of the B 4 C p /Al composite samples prepared with various scanning speeds, revealing the coexistence of Al and B 4 C in them. Apart from these, Al 4 C 3 and AlB 2 were detected in all the cases, suggesting the in situ reaction between the Al melt and B 4 C. AlB 2 and Al 4 C 3 can be formed at 898–963 K and 1423–1458 K, respectively, via the reaction of B 4 C with Al melt [ 24 ], implying that the temperature of the mixed powders during the SLM process reached above 1423 K. The diffraction peak of the B 4 C phase at 2 θ = 23.66° ( Figure 3 b) increased with the laser scanning speed, since a lower scanning speed provided a higher bulk energy density, favoring the increase in the molten pool temperature and thus promoting the reaction between the Al melt and B 4 C [ 23 , 25 ]. Figure 3 c illustrates that the {111} diffraction peak of Al shifted to the right with respect to that of the starting Al powder, demonstrating that certain extents of lattice distortion occurred due to the laser-induced non-equilibrium [ 26 ].…”

Section: Resultsmentioning

confidence: 99%

“…A laser scanning mode with a rotation of 17° between neighboring layers was applied for minimizing the thermal stress formed during the SLM process, and the main processing parameters are listed in Table 1 . The detailed SLM procedure has already been reported in our previous work, and is shown in Figure 2 [ 23 ].…”

Section: Methodsmentioning

confidence: 99%

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Preparation of B4Cp/Al Composites via Selective Laser Melting and Their Tribological Properties

et al. 2022

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B4C-particle-reinforced Al (B4Cp/Al) composites are widely used in various areas, e.g., armors, electronic packaging and fuel storage, owing to their several outstanding properties including high specific rigidity, excellent wear resistance and light weight. Selective laser melting (SLM) is favored in manufacturing complex components because of its high raw material utilization rate and high efficiency. In this work, a B4Cp/Al composite was successfully synthesized by SLM, and the effects of one of the most important parameters, scanning speed (100–700 mm/s), on the phase composition, density, microhardness and tribological properties of the samples were investigated. The microhardness, relative density and dry-sliding wear resistance of as-prepared B4Cp/Al composites were improved with the decrease in scanning speed, and the sample fabricated at a scanning speed of 100 mm/s exhibited a relative density as high as about 97.1%, and a maximum microhardness of ~180 HV0.1 (approximately six times more than that of the SLM-formed pure Al sample, 31 HV0.1), a minimum wear rate of 4.2 × 10−5 mm3·N−1·m−1 and a corresponding friction coefficient of 0.41. In addition, abrasive wear, adhesive wear and oxidation wear were found to be behind the overall wear behavior of as-prepared B4Cp/Al composites.

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Section: Resultssupporting

confidence: 72%

Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Preparation of B4Cp/Al Composites via Selective Laser Melting and Their Tribological Properties

et al. 2022

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“…e findings showed that raising the laser power density improved the density, microhardness, and friction resistance of the SLM produced SiCp/Al composites. is improvement may be attributed to the higher molten pool temperature at higher laser power densities [21].…”

Section: Introductionmentioning

confidence: 99%

Impact of AlN-SiC Nanoparticle Reinforcement on the Mechanical Behavior of Al 6061-Based Hybrid Composite Developed by the Stir Casting Route

Kaliappan¹,

Shanmugam²,

Johnson

et al. 2022

Advances in Materials Science and Engineering

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The enhancement of composites’ mechanical characteristics (tensile, compressive, and hardness) is a constant demand for technological advancement. The stir casting process is used to make the hybrid aluminium alloy metal matrix composites Al 6061-SiC-AlN in our present study. To create mechanical qualities such as tensile, compressive, and hardness, silicon carbide and aluminium nitride (both 3% and 6%) were utilized as the reinforcement. The tensile strength, compressive strength, and hardness of the Al 6061-SiC-AlN hybrid composites samples were determined. The tensile, compressive, and hardness parameters of Al 6061-SiC-AlN hybrid composites are estimated and evaluated to those of the matrix Al 6061 alloy. With the inclusion of silicon carbide and AlN nanoparticles, the tensile strength, compressive strength, and hardness increased from 328 to 385 MPa, 145 to 178 Mpa, and 302 to 724 VHN, respectively.

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Recent progress on the control strategies of microstructure and mechanical properties of LPBF-printed aluminum alloys

Wang,

Zou

et al. 2024

Int J Adv Manuf Technol

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Selective laser melting of SiCp/Al composites: Densification, microstructure, and mechanical and tribological properties

Cited by 34 publications

References 62 publications

Preparation of B4Cp/Al Composites via Selective Laser Melting and Their Tribological Properties

Preparation of B4Cp/Al Composites via Selective Laser Melting and Their Tribological Properties

Impact of AlN-SiC Nanoparticle Reinforcement on the Mechanical Behavior of Al 6061-Based Hybrid Composite Developed by the Stir Casting Route

Recent progress on the control strategies of microstructure and mechanical properties of LPBF-printed aluminum alloys

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