The Effect of Heat Treatment on the Microstructure Evolution and Properties of an Age-Hardened Cu-3Ti-2Mg Alloy

• Autorzy: Liu Jituo , Wang Xianhui , Liu Jia , Ran Qianni

Identyfikatory

DOI

10.24425/amm.2021.134772

• Języki publikacji: EN

Abstrakty

EN

The study investigates the effect of heat treatment on the microstructure evolution and properties of an age-hardened Cu-3Ti-2Mg alloy. The precipitated Cu₂Mg and β'-Cu₄Ti phases consequently yield a depletion of the Cu matrix in regards to Ti and Mg solutes, which enhances the electrical conductivity. The Cu₂Mg Laves phase and β'-Cu₄Ti phase precipitates increase the hardness of the alloy due to the consistency and coherency of the later phase. However, the decrease of hardness is mainly associated with the coarse microstructures, that can be formed due to the phase transformation from metastable β'-Cu₄Ti phase to more stable Cu₃Ti phase. In the range of experiments, the optimum process is solution treatment at 700°C for 4 h, with subsequent age-hardening at 450°C for 4 h. The electrical conductivity, hardness, tensile strength, and elongation of the Cu-3Ti-2Mg alloy were 15.34 % IACS, 344 HV, 533 MPa, and 12%, respectively.

Słowa kluczowe

EN

Cu alloy; aging treatment; microstructure; precipitation; electrical conductivity

• 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: 2021
• Tom: Vol. 66, iss. 1
• Strony: 163--170
• Opis fizyczny: Bibliogr. 29 poz., fot., rys., tab.

Twórcy

autor

Liu Jituo

• Xi’an University of Technology, School of Materials Science and Engineering, Shaanxi Province Key Laboratory of Electrical Materials and Infiltration Technology, Xi’an 710048, P.R. China

autor

Wang Xianhui

• Xi’an University of Technology, School of Materials Science and Engineering, Shaanxi Province Key Laboratory of Electrical Materials and Infiltration Technology, Xi’an 710048, P.R. China

autor

Liu Jia

• Xi’an University of Technology, School of Materials Science and Engineering, Shaanxi Province Key Laboratory of Electrical Materials and Infiltration Technology, Xi’an 710048, P.R. China

autor

Ran Qianni

• Xi’an University of Technology, School of Materials Science and Engineering, Shaanxi Province Key Laboratory of Electrical Materials and Infiltration Technology, Xi’an 710048, P.R. China

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Uwagi

1. This research was supported by the National Natural Science Foundation of China (No. 51605146), Key Program of the National Natural Science Foundation of China (U1502274).

2. Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).