Effect of Annealing Temperature on Microstructure and Tensile Properties of AlSi10Mg Alloy Fabricated by Selective Laser Melting

Yan, Ting; Tang, Peng; Chen, Bingqing; Ruikun, Chu; Guo, Shaojun; Xiong, Hanguo

doi:10.3901/jme.2020.08.037

Journal of Mechanical Engineering

2020

DOI: 10.3901/jme.2020.08.037

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Effect of Annealing Temperature on Microstructure and Tensile Properties of AlSi10Mg Alloy Fabricated by Selective Laser Melting

Ting Yan¹,

Peng Tang²,

Bingqing Chen³

et al.

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2021

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Influence of hot isostatic pressing on microstructure, properties and deformability of selective laser melting TC4 alloy

Yan

Chen

Ji³

et al. 2021

China Foundry

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The influence of different hot isostatic pressing regimes on microstructure, phase constitution, microhardness, tensile properties and deformability of TC4 alloy fabricated by selective laser melting (SLM) technology was studied. The results show that the microstructure of SLM TC4 alloy is composed of acicular martensite α' phase, and the sample exhibits high microhardness and strength, but low plasticity. After hot isostatic pressing, acicular martensite α' phase transforms into α+β phase, and with the increase of hot isostatic pressing temperature and duration, α phase with coarse lath is gradually refined, and the proportion of α phase is gradually reduced. Because of the change of phase constitution in SLM TC4 alloy after hot isostatic pressing, the grain refinement strengthening is weakened, the density of dislocation is reduced, so that both microhardness and tensile strength are decreased by around 20%, the elongation is increased by more than about 70%, even over 100%, compared with asdeposited TC4 alloy. When the hot isostatic pressing regime is 940 °C/3 h/150 MPa, the tensile strength and the elongation achieve optimal match, which are about 890 MPa and around 14.0% in both directions. The fracture mechanism of alloy after 940 ºC/3 h/150 MPa HIP is dultile fracture. Hot isostatic pressing causes concave deformation of SLM TC4 alloy thin-walled frames, and the deformation degree increases with the increase of temperature.

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Influence of hot isostatic pressing on microstructure, properties and deformability of selective laser melting TC4 alloy

Yan

Chen

Ji³

et al. 2021

China Foundry

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Laser Additive Manufacturing on Metal Matrix Composites: A Review

Liu

Wang

et al. 2021

Chin. J. Mech. Eng.

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Important progresses in the study of laser additive manufacturing on metal matrix composites (MMCs) have been made. Recent efforts and advances in additive manufacturing on 5 types of MMCs are presented and reviewed. The main focus is on the material design, the combination of reinforcement and the metal matrix, the synthesis principle during the manufacturing process, and the resulted microstructures as well as properties. Thereafter, the trend of development in future is forecasted, including: Formation mechanism and reinforcement principle of strengthening phase; Material and process design to actively achieve expected performance; Innovative structure design based on the special properties of laser AM MMCs; Simulation, monitoring and optimization in the process of laser AM MMCs.

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Effect of Annealing Temperature on Microstructure and Tensile Properties of AlSi10Mg Alloy Fabricated by Selective Laser Melting

Cited by 2 publications

References 0 publications

Influence of hot isostatic pressing on microstructure, properties and deformability of selective laser melting TC4 alloy

Influence of hot isostatic pressing on microstructure, properties and deformability of selective laser melting TC4 alloy

Laser Additive Manufacturing on Metal Matrix Composites: A Review

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