细晶金属铝的制备及力学性能

doi:10.11944/j.issn.1000-0518.2015.09.150052

摘要/Abstract

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0.5~5 μm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。

关键词: 超细金属铝, 机械球磨, 快速固结, 细晶强化

Abstract:

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.

Key words: bulk ultrafine aluminum, mechanical milling, rapid solidification, grain refinement

汤华国,赵伟,刘建伟,赵振业,马贤锋. 细晶金属铝的制备及力学性能[J]. 应用化学, 2015, 32(9): 1070-1074.

TANG Huaguo,ZHAO Wei,LIU Jianwei,ZHAO Zhenye,MA Xianfeng. Synthesis and Mechanical Performances of Bulk Ultrafine Aluminum[J]. Chinese Journal of Applied Chemistry, 2015, 32(9): 1070-1074.

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