Lightweight Zr1.2V0.8NbTixAly high-entropy alloys with high tensile strength and ductility

Liang Wang; Songshen Chen; Bolun li; Tangqing Cao; Benpeng Wang; Lu Wang; Yang Ren; Jun Liang; Yunfei Xue

doi:10.1016/j.msea.2021.141234

Author(s)

Liang Wang
Songshen Chen
Bolun li
Tangqing Cao
Benpeng Wang
Lu Wang
Jun Liang
Yunfei Xue

Detail(s)

Original language	English
Article number	141234
Journal / Publication	Materials Science and Engineering A
Volume	814
Online published	4 Apr 2021
Publication status	Published - 13 May 2021
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1016/j.msea.2021.141234 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85103795996&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(9818eedd-f947-405a-86b4-870218fe1423).html

Abstract

High-entropy alloys (HEAs) provide a new perspective to design novel lightweight alloys, whereas the complex precipitates in current lightweight HEAs (LHEAs) generally limit the mechanical properties. By controlling Ti and Al, the B2 and C14 Laves precipitates in Zr_1.2V_0.8NbTi_xAl_y (Ti_xAl_y) LHEA system were successfully suppressed, and a series of LHEAs with outstanding specific yield strength-ductility matching were designed. Especially, with the same deformability (tensile ductility over 25%), the specific yield strength of Ti3.6Al0.6 LHEA is over 40% higher than current developed HEAs. The excellent mechanical properties are attributed to be benefited by a combination of solid solution strengthening and chemical short-range order strengthening. Our results bring new insights into the phase stability and precipitation suppression of HEAs, which is constructive for the novel lightweight alloy development.

Research Area(s)

Chemical short-range order, Lightweight high-entropy alloys, Mechanical properties, Phase stability, Solid-solution strengthening

Citation Format(s)

[ RIS ] [ BibTeX ]

Lightweight Zr_1.2V_0.8NbTi_xAl_y high-entropy alloys with high tensile strength and ductility. / Wang, Liang; Chen, Songshen; li, Bolun et al.
In: Materials Science and Engineering A, Vol. 814, 141234, 13.05.2021.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Wang, L, Chen, S, li, B, Cao, T, Wang, B, Wang, L, Ren, Y, Liang, J & Xue, Y 2021, 'Lightweight Zr_1.2V_0.8NbTi_xAl_y high-entropy alloys with high tensile strength and ductility', Materials Science and Engineering A, vol. 814, 141234. https://doi.org/10.1016/j.msea.2021.141234

Wang, L., Chen, S., li, B., Cao, T., Wang, B., Wang, L., Ren, Y., Liang, J., & Xue, Y. (2021). Lightweight Zr_1.2V_0.8NbTi_xAl_y high-entropy alloys with high tensile strength and ductility. Materials Science and Engineering A, 814, Article 141234. https://doi.org/10.1016/j.msea.2021.141234

Wang L, Chen S, li B, Cao T, Wang B, Wang L et al. Lightweight Zr_1.2V_0.8NbTi_xAl_y high-entropy alloys with high tensile strength and ductility. Materials Science and Engineering A. 2021 May 13;814:141234. Epub 2021 Apr 4. doi: 10.1016/j.msea.2021.141234

Wang, Liang ; Chen, Songshen ; li, Bolun et al. / Lightweight Zr_1.2V_0.8NbTi_xAl_y high-entropy alloys with high tensile strength and ductility. In: Materials Science and Engineering A. 2021 ; Vol. 814.