Selective Laser Melting Additive Manufacturing of TiC/AlSi10Mg Bulk-form Nanocomposites with Tailored Microstructures and Properties

Gu, Dongdong; Wang, Hongqiao; Chang, Fei; Dai, Donghua; Yuan, Pengpeng; Hagedorn, Yves‐Christian; Meiners, Wilhelm

doi:10.1016/j.phpro.2014.08.153

Cited by 139 publications

(71 citation statements)

References 20 publications

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“…Recently, SLS/SLM processing of aluminium alloy powders and their composites [24,[27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43]45] has been undertaken with a view to gaining an understanding of laser processability.…”

Section: Introductionmentioning

confidence: 99%

A review on selective laser sintering/melting (SLS/SLM) of aluminium alloy powders: Processing, microstructure, and properties

Olakanmi

Mullis

Dalgarno

2015

Progress in Materials Science

1,429

526

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Section: Introductionmentioning

confidence: 99%

A review on selective laser sintering/melting (SLS/SLM) of aluminium alloy powders: Processing, microstructure, and properties

Olakanmi

Mullis

Dalgarno

2015

Progress in Materials Science

1,429

526

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“…34,35 Dadbakhsh et al have demonstrated the use of Fe 2 O 3 as reinforcement with pure aluminum as a matrix. 36 They worked on the optimization of processing parameters and evaluated the mechanical properties of the resultant composites.…”

Section: Introductionmentioning

confidence: 99%

Processing of Al–12Si–TNM composites by selective laser melting and evaluation of compressive and wear properties

et al. 2015

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Al-12Si (80 vol%)-Ti 52.4 Al 42.2 Nb 4.4 Mo 0.9 B 0.06 (at.%) (TNM) composites were successfully produced by the selective laser melting (SLM). Detailed structural and microstructural analysis shows the formation of the Al 6 MoTi intermetallic phase due to the reaction of the TNM reinforcement with the Al-12Si matrix during SLM. Compression tests reveal that the composites exhibit significantly improved properties (;140 and ;160 MPa higher yield and ultimate compressive strengths, respectively) compared with the Al-12Si matrix. However, the samples break at ;6% total strain under compression, thus showing a reduced plasticity of the composites. Sliding wear tests were carried out for both the Al-12Si matrix and the Al-12Si-TNM composites. The composites perform better under sliding wear conditions and the wear rate increases with increasing loads. At high loads, the wear takes place at three different rates and the wear rate decreases with increasing experiment duration.

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“…Gu et al processed nanocomposite parts using different kinds of regular LBM materials and different kinds of small sized reinforcement materials [12][13][14][15][16]. They also investigated TiC/Ti nanocomposite parts [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…The TiC-reinforced phases in the LBM nanocomposite material had a lamellar nanostructure with thickness on the nanoscale. Additionally, Gu et al performed similar investigations on the material characteristics with other material combinations such as TiC particle reinforced AlSi10 Mg nanocomposite material parts [15,16]. Chang et al studied the influence of different SiC powders with a polyangular structure and different particle sizes with a mean particle size D 50 of 50, 15 and 5 lm on the microstructure and mechanical properties of the LBM-processed composite parts at a weight ratio AlSi10 Mg to SiC of 80:20 [18].…”

Section: Introductionmentioning

confidence: 99%

Nanoparticle improved metal materials for additive manufacturing

2017

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A variety of laser systems and powder materials is available for additive manufacturing processes such as powder bed fusion of metallic parts (laser beam melting). The required energy density for a sufficient melting of powder materials strongly depends on the optical properties of the used powder (e.g., absorption, reflection and transmittance). During laser irradiation a moving melt pool is generated in the laser heat affected zone. Re-solidification of the molten particles results in interconnected welding lines similar to those of traditional welding processes. Here, the layer by layer approach combined with a selective laser exposure in cross-sectional areas of the parts enable the generation of 3D structures from the powder bed. The mechanical properties of such fabricated structures are usually comparable to the mechanical properties of the bulk material the powder particles are made of. In this paper, a proof of principle is demonstrated to receive improved mechanical or other properties of parts being manufactured by laser beam melting. The approach addresses laser beam melting of the commonly available powder materials tool steel (1.2709) and Hastelloy X (2.4665) which are additionally modified with nanoparticles (Al 2 O 3 ) on their surfaces. Due to the shortage of these two available nanoparticle modified materials (about 100 g each) only relatively small test specimens are manufactured and, therefore, only limited typical characteristic values could be determined. However, the nanoparticle modified and laser beam molten 3D structures were systematically characterized by optical and scanning electron microscopy, energy-dispersive X-ray microanalysis, micro hardness indentation and etching analysis. It turns out that modification of the educt powder surfaces with nanoparticles prior to laser beam melting can improve e.g., mechanical properties of the generated 3D structures.Keywords Additive manufacturing Á Powder bed fusion (laser beam melting) Á Laser-generation of nanomaterials Á Tool steel (1.2709) and Hastelloy X (2.4665)

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Selective Laser Melting Additive Manufacturing of TiC/AlSi10Mg Bulk-form Nanocomposites with Tailored Microstructures and Properties

Cited by 139 publications

References 20 publications

A review on selective laser sintering/melting (SLS/SLM) of aluminium alloy powders: Processing, microstructure, and properties

A review on selective laser sintering/melting (SLS/SLM) of aluminium alloy powders: Processing, microstructure, and properties

Processing of Al–12Si–TNM composites by selective laser melting and evaluation of compressive and wear properties

Nanoparticle improved metal materials for additive manufacturing

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