The server is under maintenance between 08:00 to 12:00 (GMT+08:00), and please visit later.
We apologize for any inconvenience caused
Login  | Sign Up  |  Oriprobe Inc. Feed
China/Asia On Demand
Journal Articles
Laws/Policies/Regulations
Companies/Products
Effects of Cu content on microstructure and mechanical properties of Al-Cu-Li-Sc alloy
Author(s): 
Pages: 1182-1190
Year: Issue:  6
Journal: The Chinese Journal of Nonferrous Metals

Keyword:  Al-Li alloyAlCuSc phaseCu contentmechanical propertymicrostructure;
Abstract: 通过显微硬度测试、常规拉伸性能测试、扫描电镜和透射电镜等观察手段研究Cu含量对含Sc铝锂合金显微组织和力学性能的影响.结果表明:在Sc元素含量基本不变的情况下,Cu含量为4.2%(质量分数)的合金在均匀化过程中会形成W(AlCuSc)相,且该相在固溶时也不会完全溶解到α(Al).在相同Sc含量条件下,随着α(Al)中Cu含量的下降,w(Cu)/w(Sc)变小,均匀化后形成的W相数量会明显降低,直至消失.由于W相对合金力学性能不利,其数量的减少可以增加合金中有效固溶Cu原子的数量,从而提高合金性能,W相的形成抑制合金中Al3(Sc,Zr)粒子的析出形成.
Related Articles
loading...