细晶金属铝的制备及力学性能  

Synthesis and Mechanical Performances of Bulk Ultrafine Aluminum

作　　者：汤华国[1,2] 赵伟[1] 刘建伟[1] 赵振业[2] 马贤锋[1] 

机构地区：[1]中国科学院长春应用化学研究所,长春130022 [2]中国科学院大学,北京100049

出　　处：《应用化学》2015年第9期1070-1074,共5页Chinese Journal of Applied Chemistry

基　　金：吉林省科技攻关重点项目(20150204002GX)~~

摘　　要：从99.7%的金属铝粉出发,通过机械球磨制粉及快速压锻烧结技术制备得到了高强金属铝块,拉伸性能测试表明,金属铝的抗拉强度为537 MPa,屈服强度为495 MPa。电子显微镜分析表明,金属铝具有0.5~5μm的显微组织。高强金属铝的主要强化机制是细晶强化。较低的制备成本适合大规模工业化生产。High strength bulk aluminum has been prepared by mechanical milling and press-forming processes. The bulk aluminum exhibits a high tensile strength of 537 MPa and a yield strength of 495 MPa. Characterization of microstructures reveals that the grain size of the bulk aluminum is between 0.5~5 μm. The high strength of pure aluminum is benefit from the fine grain size. The low fabrication cost with mechanical milling and press-forming is suitable for industrialized production.

关 键 词：超细金属铝 机械球磨 快速固结 细晶强化 

分 类 号：O614[理学—无机化学]