摘要
对满足AMS4338材料规范的A公司、B公司两家供应商的2026-T3511铝合金型材进行化学成分、金相组织、力学性能对比分析。结果表明:A公司的2026-T3511铝合金型材晶粒比B公司的更加细小均匀,型材纵向力学性能略高于B公司的,B公司的型材更趋近于各向同性。A公司的型材有更多析出强化相,其疲劳极限略高于B公司的。2026-T3511铝合金型材的疲劳极限随着应力比的增大而升高。相关研究有利于2026铝合金型材的研制和建立2026铝合金型材的飞机用疲劳设计值。
Comparison of 2026-T3511 aluminum alloy profiles supplied by A and B companies conforming to AMS4338 specification was conducted on chemical composition,metallurgical microstructure and mechanical properties.The results show that the grains of 2026-T3511 aluminum alloy profiles of A company were smaller and more homogeneous than those of B company;the longitudinal mechanical properties of profiles of A company were slightly higher than those of B company,and profile characteristics of B company tend to be isotropic.The profiles of A company have more precipitation strengthening phases than those of B company and their fatigue limits were slightly higher than those of B company.The fatigue limits of 2026-T3511 Al alloy profiles increase with the increase of the stress ratio.Correlational studies were conductive to the research of 2026 aluminum alloy extrusion and establish the fatigue design value of 2026 aluminum alloy profiles for aircraft.
作者
李东
LI Dong(Material and Engineering Department of COMAC Shanghai Aircraft Design&Research Institute,Shanghai 201210,China)
出处
《轻合金加工技术》
CAS
2022年第4期51-54,69,共5页
Light Alloy Fabrication Technology
