Tailored rapid annealing to obtain heterostructured ultra-high-strength lightweight Ti-rich medium-entropy alloys

Y.C. Liao; P.S. Chen; P.H. Tsai; J.S.C. Jang; K.C. Hsieh; C.Y. Chen; J.C. Huang; H.J. Wu; I.Y. Tsao

doi:10.1016/j.rinma.2022.100342

Tailored rapid annealing to obtain heterostructured ultra-high-strength lightweight Ti-rich medium-entropy alloys

Y.C. Liao
, P.S. Chen
, P.H. Tsai
, J.S.C. Jang^*
, K.C. Hsieh
, C.Y. Chen
, J.C. Huang^*
, H.J. Wu
, I.Y. Tsao

^*Corresponding author for this work

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

6 Citations (Scopus)

39 Downloads (CityUHK Scholars)

Abstract

Thermomechanical treatment (TMT) is a widely used process for effectively enhancing the mechanical properties of conventional metallic materials. This study applied TMT along with rapid annealing to a lightweight (≈5 g/cm³) Ti-rich Ti₆₅(AlCrNb)₃₅ medium-entropy alloy (Ti-65 MEA) to equip it with a heterogeneous structure (heterostructure). After the annealing treatment, the Ti-65 MEA exhibited a heterogenous microstructure comprising nonrecrystallized shear bands and ultrafine recrystallized grains. Remarkably, the heterostructured Ti-65 MEA had extraordinary mechanical properties (tensile strength, 1500 MPa; elongation, 25%) and ultrahigh specific strength (247 MPa cm³/g).

Original language	English
Article number	100342
Journal	Results in Materials
Volume	16
Online published	28 Oct 2022
DOIs	https://doi.org/10.1016/j.rinma.2022.100342
Publication status	Published - Dec 2022

Research Keywords

Crystal structure
Metals and alloys
Microstructure

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This full text is made available under CC-BY-NC-ND 4.0. https://creativecommons.org/licenses/by-nc-nd/4.0/

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title = "Tailored rapid annealing to obtain heterostructured ultra-high-strength lightweight Ti-rich medium-entropy alloys",

abstract = "Thermomechanical treatment (TMT) is a widely used process for effectively enhancing the mechanical properties of conventional metallic materials. This study applied TMT along with rapid annealing to a lightweight (≈5 g/cm3) Ti-rich Ti65(AlCrNb)35 medium-entropy alloy (Ti-65 MEA) to equip it with a heterogeneous structure (heterostructure). After the annealing treatment, the Ti-65 MEA exhibited a heterogenous microstructure comprising nonrecrystallized shear bands and ultrafine recrystallized grains. Remarkably, the heterostructured Ti-65 MEA had extraordinary mechanical properties (tensile strength, 1500 MPa; elongation, 25\%) and ultrahigh specific strength (247 MPa cm3/g).",

keywords = "Crystal structure, Metals and alloys, Microstructure",

author = "Y.C. Liao and P.S. Chen and P.H. Tsai and J.S.C. Jang and K.C. Hsieh and C.Y. Chen and J.C. Huang and H.J. Wu and I.Y. Tsao",

year = "2022",

month = dec,

doi = "10.1016/j.rinma.2022.100342",

language = "English",

volume = "16",

journal = "Results in Materials",

issn = "2590-048X",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Tailored rapid annealing to obtain heterostructured ultra-high-strength lightweight Ti-rich medium-entropy alloys

AU - Liao, Y.C.

AU - Chen, P.S.

AU - Tsai, P.H.

AU - Jang, J.S.C.

AU - Hsieh, K.C.

AU - Chen, C.Y.

AU - Huang, J.C.

AU - Wu, H.J.

AU - Tsao, I.Y.

PY - 2022/12

Y1 - 2022/12

N2 - Thermomechanical treatment (TMT) is a widely used process for effectively enhancing the mechanical properties of conventional metallic materials. This study applied TMT along with rapid annealing to a lightweight (≈5 g/cm3) Ti-rich Ti65(AlCrNb)35 medium-entropy alloy (Ti-65 MEA) to equip it with a heterogeneous structure (heterostructure). After the annealing treatment, the Ti-65 MEA exhibited a heterogenous microstructure comprising nonrecrystallized shear bands and ultrafine recrystallized grains. Remarkably, the heterostructured Ti-65 MEA had extraordinary mechanical properties (tensile strength, 1500 MPa; elongation, 25%) and ultrahigh specific strength (247 MPa cm3/g).

AB - Thermomechanical treatment (TMT) is a widely used process for effectively enhancing the mechanical properties of conventional metallic materials. This study applied TMT along with rapid annealing to a lightweight (≈5 g/cm3) Ti-rich Ti65(AlCrNb)35 medium-entropy alloy (Ti-65 MEA) to equip it with a heterogeneous structure (heterostructure). After the annealing treatment, the Ti-65 MEA exhibited a heterogenous microstructure comprising nonrecrystallized shear bands and ultrafine recrystallized grains. Remarkably, the heterostructured Ti-65 MEA had extraordinary mechanical properties (tensile strength, 1500 MPa; elongation, 25%) and ultrahigh specific strength (247 MPa cm3/g).

KW - Crystal structure

KW - Metals and alloys

KW - Microstructure

UR - https://www.scopus.com/pages/publications/85140984973

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85140984973&origin=recordpage

U2 - 10.1016/j.rinma.2022.100342

DO - 10.1016/j.rinma.2022.100342

M3 - RGC 21 - Publication in refereed journal

SN - 2590-048X

VL - 16

JO - Results in Materials

JF - Results in Materials

M1 - 100342

ER -

Tailored rapid annealing to obtain heterostructured ultra-high-strength lightweight Ti-rich medium-entropy alloys

Abstract

Research Keywords

Publisher's Copyright Statement

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