【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。更多还原

【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.更多还原