Metal matrix composites with ternary intermetallic inclusions fabricated by laser direct energy deposition

被引：21
作者：
Shishkovsky, Igor [1 ,2 ]
Missemer, Floran [2 ]
Smurov, Igor [2 ]
机构：
[1] Russian Acad Sci, Lebedev Phys Inst, Samara Branch, Moscow 443011, Russia
[2] Univ Lyon, Ecole Natl Ingn St Etienne, F-42023 Lyon, France
来源：
COMPOSITE STRUCTURES | 2018年 / 183卷
关键词：
Metal matrix composites (MMC); Laser direct energy deposition (LDED); Aluminides of nickel and titanium; AL-NI-TI; MECHANICAL-PROPERTIES; GRADED STRUCTURES; PHASE EVOLUTION; SUPERALLOY K418; MICROSTRUCTURE; COATINGS; SYSTEM; ALLOY; BEHAVIOR;
D O I：
10.1016/j.compstruct.2017.09.004
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
At the present research, we obtained the metal matrix composites (MMC) of dispersion-reinforced nickel and titanium based alloys with variable content, structure and properties using laser direct energy deposition (LDED). We have ascertained that forming double and triple reinforced MexAly (x, y = 1.0.3) intermetallic structures with preset parameters of dispersibility and spatial distribution can be performed in-situ, using the LDED during the phase transformations of cooling and crystallization of the alloy. The preset gradients of final chemical composition, structure and microhardness have been obtained precisely by regulating the composition of the powder mixture supplied to the active zone of the LDED. We suggest a combination method of the LDED which can be an effective instrument for search and development of the new MMC and alloys for the additive manufacture field, as well as for studying structure-and phase-formation in the nonequilibrium conditions of laser synthesis. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：663 / 670
页数：8
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