guest ::
| Home > Publications database > Development of cold work tool steel based-MMC coating using HVOF spraying and its HIP densification behaviour |
| Home > Publications database > Development of cold work tool steel based-MMC coating using HVOF spraying and its HIP densification behaviour |
| Journal Article | PreJuSER-10215 |
; ; ; ; ;
2010
Elsevier Science
Amsterdam [u.a.]
This record in other databases: 
Please use a persistent id in citations: doi:10.1016/j.surfcoat.2010.05.001
Abstract: The aim of the present study is to develop a Fe-based metal matrix composite (MMC) coating using high velocity oxy-fuel spraying (HVOF) process. A ledeburitic high alloyed cold work tool steel (X220CrVMo13-4) and NbC with an average size of 2 mu m at different volume fractions have been considered as metal matrix and hard particles respectively. MMC coatings were deposited on austenitic stainless substrates and the coatings were subsequently densified by hot isostatic pressing (HIP) with and without encapsulation. Microstructural analysis of the as-sprayed and HIPed coatings were characterized by SEM and XRD methods. Results showed that the feedstock preparation involving fine NbC was an influencing factor on the coating deposition. A relatively homogeneous dispersion of fine NbC up to 30 vol.% in cold work tool steel matrix was possible using optimized HVOF spraying. Besides, HVOF spraying and its subsequent HIP treatment induced significant microstructural and phase changes in the MMC coatings. The study showed the potential of HVOF spraying for the development of steel based MMC coatings and its subsequent densification can be achieved by HIP process with and without encapsulation. (C) 2010 Elsevier B.V. All rights reserved.
Keyword(s): J ; Thermal spraying (auto) ; High velocity oxy-fuel (HVOF) (auto) ; Metal matrix composite (auto) ; Tool steel (auto) ; Niobium carbide (auto) ; Hot isostatic pressing (HIP) (auto)
|
The record appears in these collections: |