Effect of Low Temperature Treatment on Microstructure and Properties of C17510 Beryllium Copper Alloy

Author of the article:LU Hanlin, CHEN Leping, FANG Senpeng, ZHOU Quan

Author's Workplace：School of Aeronautical Manufacturing Engineering, Nanchang Hangkong University, Nanchang 330063, China

Key Words：C17510 alloy; deep cryogenic treatment; microstructure; electrical conductivity; hardness

Abstract：In order to improve the microstructure and properties of C17510 alloy, C17510 alloy was treated by solid solution, aging and deep cryogenic treatment. The microstructure and properties of C17510 alloy were studied by means of Vickers hardness tester, XRD, electrical conductivity tester and metallographic microscope. The results show that twin crystals appear in the microstructure of C17510 alloy after cryogenic treatment under the condition of constant solution and aging treatment. Cryogenic treatment has little effect on the conductivity of C17510 alloy. With the prolonging of cryogenic time, the Vickers hardness of C17510 alloy decreases firstly, then increases and then decreases, and reaches the peak value of 290.19 HV at 10 h.