Effect of nano-CeO2 addition on the consolidation of W-5Ni-3Cu alloy by a two-step sintering process

Hongfeng Dong; Jun Gong; Wensheng Li

doi:10.1016/j.rinp.2019.102657

Results in Physics (Dec 2019)

Effect of nano-CeO2 addition on the consolidation of W-5Ni-3Cu alloy by a two-step sintering process

Hongfeng Dong,
Jun Gong,
Wensheng Li

Affiliations

Hongfeng Dong: School of Mechanical and Electrical Engineering, Lanzhou University of Technology, Lanzhou 730050, China; School of Materials Science and Engineering, Shaanxi University of Technology, Hanzhong 723001, China; Corresponding author at: School of Mechanical and Electrical Engineering, Lanzhou University of Technology, Lanzhou 730050, China.
Jun Gong: School of Mechanical and Electrical Engineering, Lanzhou University of Technology, Lanzhou 730050, China
Wensheng Li: State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China

DOI: https://doi.org/10.1016/j.rinp.2019.102657
Journal volume & issue: Vol. 15

Abstract

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Effects of nano-CeO2 addition on the consolidation of the W-5Ni-3Cu alloy were investigated using a two-step sintering process. The results demonstrate that the relative density of W-5Ni-3Cu alloys with added nano-CeO2 is less than that without added nano-CeO2. The shapes of W-rich particles change from irregular hexagons of W-5Ni-3Cu to ovals of W-5Ni-3Cu-0.4%CeO2. The fine-grain and interfacial strengthening effect caused by adding nano-CeO2 improve comprehensive properties of the alloys. The optimal results for the Vickers hardness, flexural strength, compressive strength, compressive toughness, and yield strength are 517 ± 2 HV, 739 ± 21 MPa, 1460 ± 48 MPa, 327.25 J·cm−3, and 691 MPa, respectively. Keywords: W-Ni-Cu alloys, Two-step sintering, CeO2, Microstructure, Mechanical properties

Published in Results in Physics

ISSN: 2211-3797 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics
Website: https://www.sciencedirect.com/journal/results-in-physics

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