Influence of mechanically activated annealing on phase evolution in Al0.3CoCrFeNi high-entropy alloy
(2019) In Journal of Materials Science 54. p.14588-14598- Abstract
In the present work, the concept of mechanically activated annealing (MAA) has been applied to produce nanocrystalline Al0.3CoCrFeNi high-entropy alloys (HEAs) with reduced contamination levels. Phase evolution during conventional mechanical alloying (MA), MAA and subsequent consolidation by spark plasma sintering (SPS) have been studied in detail. Complete alloying is obtained after 15 h of MA, while milling time of 5 h and annealing at 1100 °C for 1 h have been used to achieve alloy formation during MAA. Both the MA–SPS and MAA–SPS routes have shown major FCC phase. The contamination of WC observed during MA was successfully eliminated during MAA, while the volume fraction of Cr7C3 reduced from 20%... (More)
In the present work, the concept of mechanically activated annealing (MAA) has been applied to produce nanocrystalline Al0.3CoCrFeNi high-entropy alloys (HEAs) with reduced contamination levels. Phase evolution during conventional mechanical alloying (MA), MAA and subsequent consolidation by spark plasma sintering (SPS) have been studied in detail. Complete alloying is obtained after 15 h of MA, while milling time of 5 h and annealing at 1100 °C for 1 h have been used to achieve alloy formation during MAA. Both the MA–SPS and MAA–SPS routes have shown major FCC phase. The contamination of WC observed during MA was successfully eliminated during MAA, while the volume fraction of Cr7C3 reduced from 20% during MA–SPS to 10% after MAA–SPS. This method can serve as an effective way to produce nanostructured HEAs with minimum contamination.
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- author
- John, Rahul ; Karati, Anirudha ; Garlapati, Mohan Muralikrishna ; Vaidya, Mayur ; Bhattacharya, Rahul LU ; Fabijanic, Daniel and Murty, B. S.
- publishing date
- 2019-12-01
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Materials Science
- volume
- 54
- pages
- 11 pages
- publisher
- Springer
- external identifiers
-
- scopus:85071271824
- ISSN
- 0022-2461
- DOI
- 10.1007/s10853-019-03917-7
- language
- English
- LU publication?
- no
- id
- 47e01ecf-dc05-4ccf-9038-647ccc9d335f
- date added to LUP
- 2025-08-28 21:07:20
- date last changed
- 2025-10-14 10:23:19
@article{47e01ecf-dc05-4ccf-9038-647ccc9d335f,
abstract = {{<p>In the present work, the concept of mechanically activated annealing (MAA) has been applied to produce nanocrystalline Al<sub>0.3</sub>CoCrFeNi high-entropy alloys (HEAs) with reduced contamination levels. Phase evolution during conventional mechanical alloying (MA), MAA and subsequent consolidation by spark plasma sintering (SPS) have been studied in detail. Complete alloying is obtained after 15 h of MA, while milling time of 5 h and annealing at 1100 °C for 1 h have been used to achieve alloy formation during MAA. Both the MA–SPS and MAA–SPS routes have shown major FCC phase. The contamination of WC observed during MA was successfully eliminated during MAA, while the volume fraction of Cr<sub>7</sub>C<sub>3</sub> reduced from 20% during MA–SPS to 10% after MAA–SPS. This method can serve as an effective way to produce nanostructured HEAs with minimum contamination.</p>}},
author = {{John, Rahul and Karati, Anirudha and Garlapati, Mohan Muralikrishna and Vaidya, Mayur and Bhattacharya, Rahul and Fabijanic, Daniel and Murty, B. S.}},
issn = {{0022-2461}},
language = {{eng}},
month = {{12}},
pages = {{14588--14598}},
publisher = {{Springer}},
series = {{Journal of Materials Science}},
title = {{Influence of mechanically activated annealing on phase evolution in Al<sub>0.3</sub>CoCrFeNi high-entropy alloy}},
url = {{http://dx.doi.org/10.1007/s10853-019-03917-7}},
doi = {{10.1007/s10853-019-03917-7}},
volume = {{54}},
year = {{2019}},
}