摘要
对经TLJ350型连续挤压机挤压(Extrusion)后的铜合金(Cu-5%Al),进行液氮温度下(-196℃)的深冷处理(Deep Cryogenic Treatment,DCT),研究铜合金(Cu-5%Al)在不同时间深冷处理后微观组织的变化。结果表明:铜合金(Cu-5%Al)经深冷处理后组织中剪切带细化,孪晶形成。随着深冷的进行,孪晶片层厚度逐渐变小,在15分钟深冷处理后,组织中产生大量纳米孪晶片层。研究发现,挤压变形后的铜合金(Cu-5%Al)经过深冷处理,组织中产生大量纳米孪晶片层,其微观组织更为均匀。
After extrusion by TLJ350 extruding machine,copper alloy(Cu-5% Al) was subjected to deep cryogenic treatment(DCT) at -196℃. The effects of deep cryogenic treatment on microstructure and properties of copper alloy was evaluated. The results show that the grains of copper alloy(Cu-5% Al) are refined after deep cryogenic treatment. The twins grew in the structure. It is found that the copper alloy(Cu-5% Al) after extrusion and deep cryogenic treatment,the microstructure is more uniform and the mechanical properties are better.
作者
金磊磊
王军
陈博文
Jin Leilei;Wang Jun;Chen Bowen
出处
《计量与测试技术》
2019年第4期76-77,共2页
Metrology & Measurement Technique
关键词
铜合金
挤压
深冷处理
显微组织
力学性能
copper alloy
extrusion
DCT
microstructure
mechanical properties
