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Processing of high entropy alloys with exceptionally good high temperature oxidation properties

Murty, B.S. ; Bhattacharya, Rahul LU ; Kamaraj, M. ; Fabijanic, Daniel and Hodgson, Peter (2023) 462116
Abstract
The invention relates to High Entropy Alloys for high hardness and high temperature oxidation resistant applications. A new processing method has been developed to prepare the said alloys containing equiatomic ratios of Al, Co, Cr, Fe and Ni to obtain a nanocrystalline phases directly after high energy ball milling. Cr7C3 precipitates having size less than 15 nm are formed through an in-situ reaction in the process of preparation, which includes high energy ball milling with WC balls and WC vials followed by spark plasma sintering.
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inventor
Murty, B.S. ; LU ; Kamaraj, M. ; Fabijanic, Daniel and Hodgson, Peter
publishing date
type
Patent
publication status
published
subject
keywords
High entropy alloys, Mechanical alloying, Powder metallurgy (PM), Spark plasma sintering, Oxidation behaviour, Thermogravimetric analysis, Differential scanning calorimetry (DSC), X-ray diffraction (XRD), Transmission electron microscopy (TEM), Scanning electron microscopy SEM
publisher
Intellectual Property India
patent number
462116
language
English
LU publication?
no
id
c5a5d0eb-3050-48e8-a02d-5c022e71f5e5
date added to LUP
2025-08-28 20:55:25
date last changed
2025-09-22 16:30:39
@misc{c5a5d0eb-3050-48e8-a02d-5c022e71f5e5,
  abstract     = {{The invention relates to High Entropy Alloys for high hardness and high temperature oxidation resistant applications. A new processing method has been developed to prepare the said alloys containing equiatomic ratios of Al, Co, Cr, Fe and Ni to obtain a nanocrystalline phases directly after high energy ball milling. Cr7C3 precipitates having size less than 15 nm are formed through an in-situ reaction in the process of preparation, which includes high energy ball milling with WC balls and WC vials followed by spark plasma sintering.}},
  author       = {{Murty, B.S. and Bhattacharya, Rahul and Kamaraj, M. and Fabijanic, Daniel and Hodgson, Peter}},
  keywords     = {{High entropy alloys; Mechanical alloying; Powder metallurgy (PM); Spark plasma sintering; Oxidation behaviour; Thermogravimetric analysis; Differential scanning calorimetry (DSC); X-ray diffraction (XRD); Transmission electron microscopy (TEM); Scanning electron microscopy SEM}},
  language     = {{eng}},
  month        = {{10}},
  note         = {{Patent, Patent Number: 462116}},
  publisher    = {{Intellectual Property India}},
  title        = {{Processing of high entropy alloys with exceptionally good high temperature oxidation properties}},
  url          = {{https://lup.lub.lu.se/search/files/226468940/RSA16P0057_IDF-1377_Patent_Certificate_26Oct23.pdf}},
  year         = {{2023}},
}