CoCuFeNi high entropy alloy reinforced by in-situ W particles
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
Author(s)
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Detail(s)
Original language | English |
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Article number | 140218 |
Journal / Publication | Materials Science and Engineering A |
Volume | 797 |
Online published | 2 Sept 2020 |
Publication status | Published - 21 Oct 2020 |
Link(s)
Abstract
(CoCuFeNi)100-xWx (x = 0, 5, 15) high entropy alloys (HEAs) were prepared by arc melting. Five atomic percent of tungsten can completely dissolve into CoCuFeNi, forming face-centered cubic solid solution. In-situ W particles formed in CoCuFeNi matrix with 15 at.% W addition with semi-coherent interface between W particles and CoCuFeNi matrix. The yield strength of (CoCuFeNi)85W15 was increased by ~46% with minor reduction in ductility compared with CoCuFeNi HEA. The strengthening mechanisms for (CoCuFeNi)85W15 included solid solution strengthening, grain refinement strengthening as well as second phase strengthening. The ductility of (CoCuFeNi)85W15 was resulted from grain size refinement and the plasticity of W particles and CoCuFeNi.
Research Area(s)
- High entropy alloy, In-situ W particle, Mechanical property, Microstructure
Citation Format(s)
CoCuFeNi high entropy alloy reinforced by in-situ W particles. / Ma, Huan; Shao, Yang; Shek, Chan Hung.
In: Materials Science and Engineering A, Vol. 797, 140218, 21.10.2020.
In: Materials Science and Engineering A, Vol. 797, 140218, 21.10.2020.
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review