Effects of CeO2 addition on microstructure and cavitation erosion resistance of laser-processed Ni-WC composites

[Display omitted] •Excellent cavitation erosion resistance of laser-remelted Ni-WC(-CeO2).•Revealed erosion mechanism of Ni-WC(-CeO2) during cavitation erosion.•Effects of CeO2 addition on morphology and distribution of WC in Ni-based MMC.•Influence of morphology and distribution of WC on cavitation...

Full description

Saved in:
Bibliographic Details
Published in:Materials letters 2022-03, Vol.311, p.131583, Article 131583
Main Authors: Yang, Rui, Tian, Ye, Huang, Nengliang, Lu, Pengfei, Chen, Hao, Li, Hua, Chen, Xiuyong
Format: Article
Language:English
Subjects:
Cavitation
Cavitation erosion
Cavitation resistance
Cerium oxides
Composite materials
Erosion resistance
Grain refining
Grain structure
Laser processing
Lasers
Materials science
Melting
Metal matrix composites
Microhardness
Morphology
Rare earth
Stainless steels
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:[Display omitted] •Excellent cavitation erosion resistance of laser-remelted Ni-WC(-CeO2).•Revealed erosion mechanism of Ni-WC(-CeO2) during cavitation erosion.•Effects of CeO2 addition on morphology and distribution of WC in Ni-based MMC.•Influence of morphology and distribution of WC on cavitation erosion resistance. Ni-WC metal matrix composite (MMC) with excellent cavitation erosion resistance (CER) was developed via laser-remelting to the sintered Ni-WC MMC. The robustness of the hierarchical WC lamellae contributed to the outstanding CER of the laser-remelted (LM) Ni-WC MMC, of which the relative CER was nearly twice greater than that of 316L stainless steel. Cerium dioxide (CeO2) was also added, attempting to enhance the CER of the LM Ni-WC MMC further. However, despite a refined grain structure and improved microhardness were obtained in the LM Ni-WC-CeO2, the CER was compromised due to that the modified morphology and distribution of the WC grains after the addition of CeO2 were not very effective in enhancing the CER. The results indicated that the morphology and distribution of the WC particles exhibited a significant influence on the CER of materials, presenting a new aspect for studying cavitation erosion.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2021.131583