Advanced Spherical Powders of NiAl-based Alloys and Their Application in Additive Technologies
Three hybrid technological routes for synthesis of advanced powders based on NiAl for additive techniques were proposed.First route includes:(1)centrifugal SHS casting of a semi-product using oxide raw material;(2)vacuum induction remelting(VIR)of semi-product with structure modification and electrode molding;(3)plasma rotation electrode process(PREP)and spherical powders classification.Second route includes:(1)elemental combustion synthesis and powder production;(2)particles treatment in discharge plasma for spherical morphology obtaining.Third route includes:(1)powder production by reduction by calcium hydride method;(2)particles treatment in discharge plasma for spherical morphology obtaining.Advanced multicomponent NiAl based alloy with the allowable impurity content,high strength with partial plastic deformation at the room temperature was developed.Evolution of the microstructure isothermally exposed has been studied by in-situ HRTEM.High-temperature strength and creep resistance were investigated with Gleeble 3800 testing system using a Pocket Jaw module and a DIL 805 A/D quench and deformation dilatometer.The heritage of hierarchical structures has been observed even in ingot after VIR,spherical powders,and in dense materials manufacturing with selective laser melting(SLM)and hot isostatic pressing(HIP)technologies.
nickel aluminide synthesis powders structure SLM and HIP properties
Martinov D.A. Levashov E.A. Kaplanskii Yu.Yu. Kurbatkina V.V. Patsera E.I. Chupeeva A.N. Gurskikh A.V. Samokhin A.V. Fadeev A.A.
JSC Polema,300016,Przhevalskogo str.,3,Tula,Russia National University of Science and Technology MISiS,119049,Leninsky pr.4,Moscow,Russia A.A.Baikov Institute of Metallurgy and Material Science of RAS,119991,Leninsky pt.49,Moscow,Russia
国际会议
北京
英文
1721-1728
2018-09-16（万方平台首次上网日期，不代表论文的发表时间）