冷轧加工率及退火温度对5383铝合金板材力学和腐蚀性能影响研究

Effect of Cold Rolling and Annealing Temperature on Mechanical and Corrosion Properties of 5383 Aluminum Alloy Sheet

摘要: 为提升5383铝合金板材力学性能与耐蚀能力，本文采用力学性能与剥落腐蚀测试的方式，对比研究了不同压冷轧加工率及退火温度对板材抗拉强度、屈服强度、延伸率以及晶间腐蚀影响规律及机理。研究结果表明：板材抗拉强度、屈服强度以及晶间腐蚀等级均与冷轧加工率、退火温度均成反比关系，延伸率随着冷加工率增加而下降，但随着退火温度增大逐渐增加，且当退火温度超过225℃后，加工率大的板材其延伸率增长速率更快。

Abstract: In order to enhance the mechanical performance and corrosionresistance of 5383 aluminum alloy sheet, tensile tests and exfoliation corrosion experiments were performed to uncovering the effects of cold working deformation rate and annealing temperature on the tensile strength, yield strength, elongation rate and intergranular corrosion behavior and underlying mechanism. The results indicated the tensile strength, yield strength, and the anti-intergranular corrosion ability decreased for the increase of cold working deformation rate and annealing temperature. Elongation rate was decreased for the growing cold working rate while enhanced for the increasing annealing temperature, and the growing rate of elongation rate becomes bigger for those with larger cold working rate.