Microstructure and mechanical properties of Inconel 625/nano-TiB2 composite fabricated by LAAM

被引：75
作者：
Zhang, Baicheng [1 ]
Bi, Guijun [1 ]
Wang, Pei [2 ]
Bai, Jiaming [1 ]
Chew, Youxiang [1 ]
Nai, Muiling Sharon [1 ]
机构：
[1] Singapore Inst Mfg Technol, 73 Nanyang Dr, Singapore 637662, Singapore
[2] Inst Mat Res & Engn, 2 Fusionopolis Way,Innovis 08-03, Singapore 138634, Singapore
来源：
MATERIALS & DESIGN | 2016年 / 111卷
关键词：
LAAM; Inconel; 625; TiB2; Composite; Mechanical property; METAL-DEPOSITION; LASER; SUPERALLOY; ALLOY; TIB2;
D O I：
10.1016/j.matdes.2016.08.078
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Laser aided additive manufacturing (LAAM) was applied to produce nano-TiB2 particle reinforced Inconel 625 composite material. The influence of nano-TiB2 addition on the microstructure, micro-hardness, wear performance and mechanical properties of the composite was studied. The XRD and SEM analyses verified that the LAAM processed Inconel 625/nano-TiB2 composite consisted of single long columnar grain along building direction with TiB2 particles concentration at grain boundaries. The mechanical testing revealed that the LAAM processed Inconel 625/nano-TiB2 composite possessed excellent tensile properties (sigma(UTS) approximate to 1020 MPa, sigma(0.2YS) approximate to 714 MPa, delta approximate to 19%) with relatively high micro-hardness (HV0.2 = 347) and good abrasive resistance (COF approximate to 0.39). (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：70 / 79
页数：10
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