Y Addition Effects on Hot Deformation Behavior of Cu-Zr Alloys with High Zr Content

• Autorzy: Tian K. , Tian B. , Volinsky A. A. , Zhang Y. , Liu Y. , Du Y.

Identyfikatory

DOI

10.24425/122417

• Języki publikacji: EN

Abstrakty

EN

Isothermal hot compression experiments were carried out using the Gleeble-1500D thermal mechanical simulator. The flow stress of the Cu-1%Zr and Cu-1%Zr-0.15%Y alloys was studied at hot deformation temperature of 550°C, 650°C, 750°C, 850°C, 900°C and the strain rate of 0.001 s^-1, 0.01 s^-1, 0.1 s^-1, 1 s^-1, 10 s^-1. Hot deformation activation energy and constitutive equations for two kinds of alloys with and without yttrium addition were obtained by correlating the flow stress, strain rate and deformation temperature. The reasons for the change of hot deformation activation energy of the two alloys were analyzed. Dynamic recrystallization microstructure evolution for the two kinds of alloys during hot compression deformation was analyzed by optical and transmission electron microscopy. Cu-1%Zr and Cu-1%Zr-0.15%Y alloys exhibit similar behavior of hot compression deformation. Typical dynamic recovery occurs during the 550-750°C deformation temperature, while dynamic recrystallization (DRX) occurs during the 850-900°C deformation temperature. High Zr content and the addition of Y significantly improved Cu-1%Zr alloy hot deformation activation energy. Compared with hot deformation activation energy of pure copper, hot deformation activation energy of the Cu-1%Zr and Cu-1%Zr-0.15%Y alloys is increased by 54% and 81%, respectively. Compared with hot deformation activation energy of the Cu-1%Zr alloy, it increased by 18% with the addition of Y. The addition of yttrium refines grain, advances the dynamic recrystallization critical strain point and improves dynamic recrystallization.

Słowa kluczowe

EN

Cu-1%Zr alloy; high Zr content; yttrium; hot deformation activation energy; dynamic recrystallization

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2018
• Tom: Vol. 63, iss. 2
• Strony: 875--882
• Opis fizyczny: Bibliogr. 31 poz., fot., rys., wykr., wzory

Twórcy

autor

Tian K.

• Henan University of Science and Technology, School of Materials Science and Engineering, Luoyang 471023, China
• Collaborative Innovation Center of Nonferrous Metals, Henan Province, Luoyang 471023, China

autor

Tian B.

• Henan University of Science and Technology, School of Materials Science and Engineering, Luoyang 471023, China
• Collaborative Innovation Center of Nonferrous Metals, Henan Province, Luoyang 471023, China

autor

Volinsky A. A.

• University of South Florida, Department of Mechanical Engineering, Tampa Fl 33620, USA

autor

Zhang Y.

• Henan University of Science and Technology, School of Materials Science and Engineering, Luoyang 471023, China
• Collaborative Innovation Center of Nonferrous Metals, Henan Province, Luoyang 471023, China

autor

Liu Y.

• Henan University of Science and Technology, School of Materials Science and Engineering, Luoyang 471023, China
• Collaborative Innovation Center of Nonferrous Metals, Henan Province, Luoyang 471023, China

autor

Du Y.

• Institute of Microelectronics of Chinese Academy of Sciences, Suzhou 215347, China

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Uwagi

EN

1. This work was supported by the National Natural Science Foundation of China (51101052) and the Science and Technology Innovation Talents in Universities of the Henan Province (14IRTSTHN007).

PL

2. Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).