Microstructure and Mechanical Properties of ZL205A Aluminum Alloy Produced by Squeeze Casting after Heat Treatment

Abstract

In this paper, ZL205A (AlCu5Mn alloy) castings were prepared by squeeze casting. The effects of solution and ageing treatment on the microstructure and mechanical properties of ZL205A castings were studied by metallography, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and mechanical properties tests. The results showed that most of the θ(Al2Cu) and T(Al12CuMn2) phases in squeeze-cast ZL205A dissolved into the α(Al) matrix after solution treatment for 15 h. The fine precipitates gradually increased with the ageing time. The ultimate tensile strength of the specimen aged for 6 h was the highest of 467 MPa and the elongation was up to 15.1%, showing good comprehensive mechanical properties.

Thermodynamic Analysis Based on the ZL205A Alloy Milling Force Model Study

“…Since the 20th century, aluminum-copper cast aluminum alloys have been widely used in automotive, aircraft, and aerospace mechanical components [1,2]. Because of its good room temperature performance and high temperature resistance, ZL205A is an aluminum alloy with a tensile strength of up to 500 MPa and an elongation of up to 10% [3,4]. It has excellent comprehensive properties, such as mechanical processing, electroplating, stress corrosion resistance, etc.…”