期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 680, 期 -, 页码 333-342出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.04.107
关键词
Laser processing; Selective laser melting (SLM); Metal matrix composites; Graded interface; Mechanical properties
资金
- National Natural Science Foundation of China [51575267, 51322509]
- Top-Notch Young Talents Program of China
- Outstanding Youth Foundation of Jiangsu Province of China [BK20130035]
- Program for New Century Excellent Talents in University [NCET-13-0854]
- Science and Technology Support Program (The Industrial Part)
- Jiangsu Provincial Department of Science and Technology of China [BE2014009-2]
- 333 Project [BRA2015368]
- Aeronautical Science Foundation of China [2015ZE52051]
- Shanghai Aerospace Science and Technology Innovation Fund [SAST2015053]
- Fundamental Research Funds for the Central Universities [NE2013103, NP2015206]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
Selective laser melting (SLM) additive manufacturing (AM) process was applied to produce WC1-x particle reinforced Inconel 718 composite parts. The effects of the applied laser energy linear density (12) on the densification behavior, particle distribution state and the microstructure of the WC1-x/Inconel 718 composite parts were deeply researched in this paper. According to the experimental results, a eta of 303 J/m resulted in a nearly full dense part with a uniform distribution of the WC1-x reinforcing particles owing to sufficient melting of mixed powder and rearrangement of the WC1-x particles. Due to an in situ reaction between the reinforcing particle surfaces and Inconel 718, a graded interfacial layer with a composition of (W, M)C-3 (M = Ni, Cr, Fe) was tailored between the reinforcing particles and the matrix during the SLM processing. Meanwhile, a category of diffusion layer between the graded interfacial layer and the matrix with a composition of (W, M)C-2 (M = Ni, Cr, Fe, Nb) was found, showing a slight increase amount of Ni, Cr, Fe and decrease of W and C as well as an additional strong carbide-forming element Nb. At an optimal eta of 242 J/m, a considerably high microhardness of 389.4 HV0.1 and a considerably low coefficient of friction (COF) of 0.39 and resultant low wear rate of 2.3 x 10(-4) mm(3) N-1 m(-1) were realized due to the united strengthening of the graded interfacial layer and the (W, M)C2 diffusion layer. A comprehensive relationship between densification behavior, microstructure and wear performance of the SLM-processed WC1-x/Inconel 718 composite parts was discussed. (C) 2016 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据