TiZrHfNb refractory high-entropy alloys with twinning-induced plasticity

Wang，Shubin1; Shu，Da1; Shi，Peiying2; Zhang，Xianbing3; Mao，Bo1; Wang，Donghong1; Liaw，Peter． K．4; Sun，Baode1

2024-07-10

10.1016/j.jmst.2023.11.047

Journal of Materials Science and Technology   影响因子和分区

1005-0302

The twinning-induced plasticity (TWIP) effect has been widely utilized in austenite steels, β-Ti alloys, and recently developed face-centered-cubic (FCC) high-entropy alloys (HEAs) to simultaneously enhance the tensile strength and ductility. In this study, for the first time, the TWIP effect through hierarchical {332<113> mechanical twinning has been successfully engineered into the TiZrHfNb refractory HEAs by decreasing temperature and tailoring the content of Nb to destabilize the BCC phase. At cryogenic temperature, the comprehensive hierarchical {332}<113> mechanical twins are activated in TiZrHfNb alloy from micro- to nanoscale and progressively segment the BCC grains into nano-scale islands during deformation, ensuring sustainable strain hardening capability and eventually achieving a substantial 35 % uniform tensile elongation. In addition, at 77 K, the tensile strength and uniform elongation of TiZrHfNb alloys can further be adjusted by a moderate increase of Nb. The results above shed new light on the development of high-performance refractory HEAs with a high and adjustable strength and ductility combination down to the cryogenic temperature.

Cryogenic temperature Hierarchical twins Refractory high-entropy alloys Tensile properties Twinning induced plasticity

SCI ; EI

英语

其他

20240415433015

Cryogenics ; Ductility ; Entropy ; Hafnium alloys ; Nanotechnology ; Niobium alloys ; Plasticity ; Strain hardening ; Tensile strength ; Titanium alloys ; Zircaloy

Metallurgy and Metallography:531 ; Heat Treatment Processes:537.1 ; Titanium and Alloys:542.3 ; Chromium and Alloys:543.1 ; Iron Alloys:545.2 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Thermodynamics:641.1 ; Cryogenics:644.4 ; Nanotechnology:761 ; Materials Science:951

MATERIALS SCIENCE

2-s2.0-85182876524

Scopus

1.Shanghai Key Lab of Advanced High-temperature Materials and Precision Forming and State Key Lab of Metal Matrix Composites,School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai,200240,China
2.Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai,201800,China
3.Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,518055,China
4.Department of Materials Science and Engineering,The University of Tennessee,Knoxville,37996,United States

Wang，Shubin,Shu，Da,Shi，Peiying,et al. TiZrHfNb refractory high-entropy alloys with twinning-induced plasticity[J]. Journal of Materials Science and Technology,2024,187:72-85.

Wang，Shubin.,Shu，Da.,Shi，Peiying.,Zhang，Xianbing.,Mao，Bo.,...&Sun，Baode.(2024).TiZrHfNb refractory high-entropy alloys with twinning-induced plasticity.Journal of Materials Science and Technology,187,72-85.

Wang，Shubin,et al."TiZrHfNb refractory high-entropy alloys with twinning-induced plasticity".Journal of Materials Science and Technology 187(2024):72-85.