Magnesium alloys remain critical in the context of light-weighting and advanced devices. The increased utilisation of magnesium(Mg)each year reveals growing demand for its Mg-based alloys. Additive manufacturing(AM) p...Magnesium alloys remain critical in the context of light-weighting and advanced devices. The increased utilisation of magnesium(Mg)each year reveals growing demand for its Mg-based alloys. Additive manufacturing(AM) provides the possibility to directly manufacture components in net-shape, providing new possibilities and applications for the use of Mg-alloys, and new prospects in the utilisation of novel physical structures made possible from ‘3D printing’. The review herein seeks to holistically explore the additive manufacturing of Mg-alloys to date, including a synopsis of processes used and properties measured(with a comparison to conventionally prepared Mg-alloys). The challenges and possibilities of AM Mg-alloys are critically elaborated for the field of mechanical metallurgy.展开更多
Cellular materials are gaining significant attention in product development due to their unique characteristics,offering superior mechanical performance and functionalities while minimizing material usage and environm...Cellular materials are gaining significant attention in product development due to their unique characteristics,offering superior mechanical performance and functionalities while minimizing material usage and environmental impact.This review article provides an overview of additive manufacturing(AM)technolo-gies for producing aluminum-based cellular materials,focusing on laser AM techniques including laser powder bed fusion and directed energy deposition.The article explores the classification of cellular mate-rials into stochastic foams and nonstochastic lattice structures and discusses conventional manufacturing methods and their limitations.It then examines the emergence of AM as a solution to these limitations,offering advantages such as design customization and optimization,shorter lead times,and the ability to manufacture complex architectures.The article highlights the current research status on AM of cellular materials including lattice shapes,design methods,and AM techniques.It further addresses the current status of AM of aluminum alloys,emphasizing the challenges and advances in producing aluminum-based cellular materials using AM.展开更多
Binder jet printing(BJP)is a state-of-the-art additive manufacturing technique for producing porous magnesium structures.Porous MgZn-Zr based BJP samples were assessed for corrosion performance in simulated body fluid...Binder jet printing(BJP)is a state-of-the-art additive manufacturing technique for producing porous magnesium structures.Porous MgZn-Zr based BJP samples were assessed for corrosion performance in simulated body fluids by electrochemical and hydrogen evolution measurements.The corrosion rates of the BJP specimens were significantly higher than solid controls,even after accounting for their larger surface areas,suggesting that the BJP microstructure is detrimental to corrosion performance.X-ray computed tomography revealed nonuniform corrosion within the porous structure,with corrosion products forming on the pore walls.Impregnating the pores with hydroxyapatite or polymers greatly improved the corrosion resistance of the BJP samples.展开更多
基金support from Australian National University Futures Schemethe support from the first Singapore-Germany Academic-Industry (2 + 2) international collaboration grant (Grant No.: A1890b0050)。
文摘Magnesium alloys remain critical in the context of light-weighting and advanced devices. The increased utilisation of magnesium(Mg)each year reveals growing demand for its Mg-based alloys. Additive manufacturing(AM) provides the possibility to directly manufacture components in net-shape, providing new possibilities and applications for the use of Mg-alloys, and new prospects in the utilisation of novel physical structures made possible from ‘3D printing’. The review herein seeks to holistically explore the additive manufacturing of Mg-alloys to date, including a synopsis of processes used and properties measured(with a comparison to conventionally prepared Mg-alloys). The challenges and possibilities of AM Mg-alloys are critically elaborated for the field of mechanical metallurgy.
基金the financial support for this research by the Australian Research Council(ARC)through the Discovery Project DP210101862.
文摘Cellular materials are gaining significant attention in product development due to their unique characteristics,offering superior mechanical performance and functionalities while minimizing material usage and environmental impact.This review article provides an overview of additive manufacturing(AM)technolo-gies for producing aluminum-based cellular materials,focusing on laser AM techniques including laser powder bed fusion and directed energy deposition.The article explores the classification of cellular mate-rials into stochastic foams and nonstochastic lattice structures and discusses conventional manufacturing methods and their limitations.It then examines the emergence of AM as a solution to these limitations,offering advantages such as design customization and optimization,shorter lead times,and the ability to manufacture complex architectures.The article highlights the current research status on AM of cellular materials including lattice shapes,design methods,and AM techniques.It further addresses the current status of AM of aluminum alloys,emphasizing the challenges and advances in producing aluminum-based cellular materials using AM.
基金the first Singapore-Germany Academic-Industry(2+2)international collaboration grant(Grant No.:A1890b0050)Agency for Science,Technology and Research(A^(*)STAR),under the RIE2020 Advanced Manufacturing and Engineering(AME)Programmatic Grant No.A1881b0061support of a scholarship from the A^(*)STAR Graduate Academy。
文摘Binder jet printing(BJP)is a state-of-the-art additive manufacturing technique for producing porous magnesium structures.Porous MgZn-Zr based BJP samples were assessed for corrosion performance in simulated body fluids by electrochemical and hydrogen evolution measurements.The corrosion rates of the BJP specimens were significantly higher than solid controls,even after accounting for their larger surface areas,suggesting that the BJP microstructure is detrimental to corrosion performance.X-ray computed tomography revealed nonuniform corrosion within the porous structure,with corrosion products forming on the pore walls.Impregnating the pores with hydroxyapatite or polymers greatly improved the corrosion resistance of the BJP samples.
