High-performance martensitic stainless steel nanocomposite powder for direct energy deposition prepared by ball milling

Direct energy deposition (DED) has great potential for the production of stainless steel matrix nanocomposite parts. However, the propensity of nanoparticle agglomeration leads to the difficulty in realizing homogenous dispersion of nanoparticles in the matrix. In this study, a series of agglomerati...

Full description

Saved in:
Bibliographic Details
Published in:Rare metals 2023-07, Vol.42 (7), p.2419-2432
Main Authors: Wang, Zhen, Xu, Shu-Rong, Sui, Qing-Xuan, Wang, Jiang, Liu, Bo, Wen, Hao, Xiao, Tian-Yi, Yuan, Quan, Zhao, Feng-Jun, Liu, Jun
Format: Article
Language:English
Subjects:
Agglomeration
Ball milling
Biomaterials
Cemented carbides
Chemistry and Materials Science
Cladding
Contact angle
Corrosion currents
Corrosion resistance
Deposition
Energy
Grain refinement
Isotropy
Martensitic stainless steels
Materials Engineering
Materials Science
Metal matrix composites
Metallic Materials
Nanocomposites
Nanoparticles
Nanoscale Science and Technology
Original Article
Physical Chemistry
Stainless steel
Substrates
Tungsten carbide
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:Direct energy deposition (DED) has great potential for the production of stainless steel matrix nanocomposite parts. However, the propensity of nanoparticle agglomeration leads to the difficulty in realizing homogenous dispersion of nanoparticles in the matrix. In this study, a series of agglomeration-free nano-WC-Co-reinforced 420 stainless steel matrix nanocomposite powders with high flowability were prepared by ball milling under the optimal parameters. The effect of ball milling time on the properties of the composite powders was investigated. Excellent powder properties ensure the DED processing performance. Furthermore, the corresponding composites were fabricated by DED, and the effects of nano-WC-Co content on the properties of the composites were comprehensively investigated. The contact angles between the single pass cladding layer and the substrate change with increasing nano-WC-Co content (decrease from 127.38° to 113.07°). The different contact angles will significantly influence the quality of the multi-pass cladding layer. Furthermore, the addition of nano-WC-Co leads not only to further grain refinement but also to more pronounced isotropy of the microstructure. With the increase in nano-WC-Co content, the corrosion resistance is significantly improved (62.28% lower corrosion current for 420–15 wt% nano-WC-Co than for 420). Graphical abstract
ISSN:1001-0521
1867-7185
DOI:10.1007/s12598-023-02267-3