Nano-size carbide-reinforced Ni matrix composite prepared by selective laser melting  

作　　者：Rui Wang Guoliang Zhu Chao Yang Wei Wang Donghong Wang Anping Dong Da Shu Liang Zhang Baode Sun 

机构地区：[1]Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming,School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai,200240,China [2]Shanghai Engineering Research Center of 3D Printing Materials,Shanghai Research Institute of Materials,Shanghai,200437,China

出　　处：《Nano Materials Science》2020年第4期316-322,共7页纳米材料科学（英文版）

基　　金：The authors grateful acknowledge the financial support of the National Natural Science Foundation of China under Projects No.51871147 and 51704195;the China Postdoctoral Science Foundation under Project No.19Z102060057;the National Science and Technology Major Project under Project No.2017-VI-0013-0085;the Science Fund for Creative Research Groups of the National Natural Science Foundation of China under Project No.51821001;the Aviation Power Fund under Project No.6141B090324.

摘　　要：Thermally stable nano-size ceramic particles are the preferred reinforcements for superalloys as they improve the alloys'microstructural stability and high-temperature properties.In this work,very dense and crack-free carbidereinforced GTD222(nickel-based superalloy)composites were prepared via selective laser melting(SLM).The distribution of TiC nanoparticles presents a three-dimensional(3D)network structure in the SLMed TiC/GTD222 composite.Mechanical testing revealed that the SLMed TiC/GTD222 composite has superior strength(UTS?1320 MPa,YS?1100 MPa)compared to the SLMed GTD222 superalloy.The GTD22 alloy reinforced with carbide nanoparticles’distinctive microstructure and its excellent mechanical properties for is discussed.

关 键 词：TiC/GTD222 composite Three-dimensional network structure Selective laser melting Microstructure Mechanical properties 

分 类 号：TB333[一般工业技术—材料科学与工程]