Abstract
A high-throughput method was employed to effectively obtain the cross-scale relationship of elastic copper alloys. Firstly, a Cu–Ni–Ti–Cu25Al–Cu35Sn diffusion multiple was prepared and heat-treated under a specified condition to form a series of diffusion layers with the concentration gradient at the multielement metal interface. Then, the compositions, elastic moduli, and hardness of the Cu–Ni–Al and Cu–Ti–Al ternary copper alloys were tested. Meanwhile, the solid phase sequences in the diffusion zones were predicted by the CALPHAD (CALculation of PHAse Diagram) method. Through these experimental and calculated results, the composition–phase–property relations of the Cu–Ni–Al and Cu–Ti–Al ternary systems were established.
Highlights
The beryllium copper elastic alloy has excellent mechanical properties [1,2,3] and is well known for its good conductivity, heat conduction, impact resistance, and magnetic field resistance
Cu-25 wt.%Al (Cu25Al)–Ni binary diffusion in the diffusion multiple was to employed to the Cu–Ni–Al ternary
Through solid-phase diffusion, a series of diffusion layers with a concentration gradient were formed at the multielement metal interface
Summary
The beryllium copper elastic alloy has excellent mechanical properties [1,2,3] and is well known for its good conductivity, heat conduction, impact resistance, and magnetic field resistance. It is widely used in precision equipment in the aerospace, electronics, and power transmission industries, as well as others [4]. The Cu–Ni–Sn alloy has a wide scope of application because of its excellent properties and medium-level strengths [10,11,12], but the segregation of Sn occurs and the preparation process is complicated.
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