TY - GEN
T1 - Mechanical properties of large-size AlCoCrFeNi2.1 eutectic high-entropy alloy via hot-rolling followed by annealing
AU - Liu, Zhe
AU - Xiong, Zhiping
AU - Chen, Kaixuan
AU - Cheng, Xingwang
N1 - Publisher Copyright:
© VDE VERLAG GMBH ∙ Berlin ∙ Offenbach.
PY - 2022
Y1 - 2022
N2 - Large-size AlCoCrFeNi2.1 eutectic high-entropy alloy (EHEA) was successfully deformed by hot-rolling. The effects of hot-rolling and annealing on the microstructure and mechanical properties were investigated. After 70% reduction at 800 °C, B2 precipitate formed in FCC matrix, with the yield strength of 1012±19 MPa, tensile strength of 1326±53 MPa and total elongation of 9.0±3.5%. With increasing annealing temperature from 800 to 1200 °C, the strength decreased and the elongation increased, exhibiting a strength-ductility compromise. However, when annealing at 600 °C, the mechanical properties were enhanced with the yield strength of 1084±3 MPa, tensile strength of 1500±5 MPa, and total elongation retained. Through two-step annealing at 1000 °C + 600 °C, the EHEA showed the best strength-ductility balance, with the yield strength of 838±7 MPa, tensile strength of 1417±4 MPa and total elongation of 14.2±0.3%. The result shows that hot-rolling followed by two-step annealing can simultaneously improve the strength and plasticity of the AlCoCrFeNi2.1 EHEA.
AB - Large-size AlCoCrFeNi2.1 eutectic high-entropy alloy (EHEA) was successfully deformed by hot-rolling. The effects of hot-rolling and annealing on the microstructure and mechanical properties were investigated. After 70% reduction at 800 °C, B2 precipitate formed in FCC matrix, with the yield strength of 1012±19 MPa, tensile strength of 1326±53 MPa and total elongation of 9.0±3.5%. With increasing annealing temperature from 800 to 1200 °C, the strength decreased and the elongation increased, exhibiting a strength-ductility compromise. However, when annealing at 600 °C, the mechanical properties were enhanced with the yield strength of 1084±3 MPa, tensile strength of 1500±5 MPa, and total elongation retained. Through two-step annealing at 1000 °C + 600 °C, the EHEA showed the best strength-ductility balance, with the yield strength of 838±7 MPa, tensile strength of 1417±4 MPa and total elongation of 14.2±0.3%. The result shows that hot-rolling followed by two-step annealing can simultaneously improve the strength and plasticity of the AlCoCrFeNi2.1 EHEA.
UR - http://www.scopus.com/inward/record.url?scp=85137015039&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85137015039
T3 - MEMAT 2022 - 2nd International Conference on Mechanical Engineering, Intelligent Manufacturing and Automation Technology
SP - 386
EP - 389
BT - MEMAT 2022 - 2nd International Conference on Mechanical Engineering, Intelligent Manufacturing and Automation Technology
A2 - Pan, Kailin
A2 - Moumni, Ziad
PB - VDE VERLAG GMBH
T2 - 2nd International Conference on Mechanical Engineering, Intelligent Manufacturing and Automation Technology, MEMAT 2022
Y2 - 7 January 2022 through 9 January 2022
ER -