Closed-cell porous aluminum is expected to be a prominent material in near future because of its light weight, high specific modulus of elasticity, high energy absorption efficiency and high sound-insulating capacity in the automotive and aerospace industries. Recently, a new method of foaming has been developed in which a precursor is formed using friction stir processing. In the friction stir processing route, a precursor is fabricated by embedding a mixture of blowing agent powder and stabilization agent powder into aluminum alloy plates by the significant stirring action of friction stir processing. By applying the friction stir processing route precursor method, the cost-effective Al-foam formation along with high productivity can be accomplished. In this study, titanium hydride powder has been used as the blowing agent as it is reported to be most compatible with aluminum matrix. The effect of percentage of stabilization agent, i.e. alumina powder on porosity of aluminum foams formed using friction stir processing route is analyzed. The porous aluminum formed with three different percentages of alumina is observed and their porosity is calculated. Also, the compressive performance of the obtained samples is observed in order to examine the alumina powder addition on mechanical properties of the obtained metal foam. This study aims at analyzing the significance of addition of the alumina into the blowing agent while developing the metal foam through friction stir processing route.

闭孔多孔铝因其重量轻、比弹性模量高、能量吸收效率高和隔音能力强，有望在不久的将来成为汽车和航空航天工业中的重要材料。最近，已开发出一种新的发泡方法，其中使用摩擦搅拌处理形成前体。在搅拌摩擦加工路线中，通过搅拌摩擦加工的显着搅拌作用，将发泡剂粉末和稳定剂粉末的混合物嵌入铝合金板中制备前驱体。通过应用搅拌摩擦加工路线前体方法，可以实现具有成本效益的铝泡沫形成以及高生产率。在这项研究中，氢化钛粉末已被用作发泡剂，因为据报道它与铝基体最相容。分析了稳定剂，即氧化铝粉的百分比对采用搅拌摩擦加工工艺形成的泡沫铝孔隙率的影响。观察由三种不同百分比的氧化铝形成的多孔铝并计算它们的孔隙率。此外，观察所得样品的压缩性能以检查添加的氧化铝粉末对所得金属泡沫的机械性能。本研究旨在分析在通过搅拌摩擦工艺路线开发金属泡沫时将氧化铝添加到发泡剂中的意义。分析了氧化铝粉对搅拌摩擦加工工艺形成的泡沫铝孔隙率的影响。观察由三种不同百分比的氧化铝形成的多孔铝并计算它们的孔隙率。此外，观察所得样品的压缩性能以检查添加的氧化铝粉末对所得金属泡沫的机械性能。本研究旨在分析在通过搅拌摩擦工艺路线开发金属泡沫时将氧化铝添加到发泡剂中的意义。分析了氧化铝粉对搅拌摩擦加工工艺形成的泡沫铝孔隙率的影响。观察由三种不同百分比的氧化铝形成的多孔铝并计算它们的孔隙率。此外，观察所得样品的压缩性能以检查添加的氧化铝粉末对所得金属泡沫的机械性能。本研究旨在分析在通过搅拌摩擦工艺路线开发金属泡沫时将氧化铝添加到发泡剂中的意义。观察所得样品的压缩性能，以检查添加氧化铝粉对所得金属泡沫的机械性能。本研究旨在分析在通过搅拌摩擦工艺路线开发金属泡沫时将氧化铝添加到发泡剂中的意义。观察所得样品的压缩性能，以检查添加氧化铝粉对所得金属泡沫的机械性能。本研究旨在分析在通过搅拌摩擦工艺路线开发金属泡沫时将氧化铝添加到发泡剂中的意义。