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AlSi10Mg Alloy Infiltration into Porous SiC Structures Manufactured by Sponge Replication
Emerging Materials Research ( IF 2.2 ) Pub Date : 2020-08-07 , DOI: 20.00196
Ugur Soy, Adem Demir

An AlSi10Mg aluminium casting alloy is infiltrated into porous silicon carbide structures, and the microstructural, mechanical and physical properties of aluminium composites are investigated. Silicon carbide porous structures were formed by the polymeric template sponge replica method. Reticulated and open pore polyurethane sponges with 45, 60 and 80 pores per inch were used for the polymeric replica application. The high-pressure die casting method was preferred to infiltrate liquid aluminium alloy into porous ceramic structures. An AlSi10Mg aluminium casting alloy was used as the matrix alloy for the manufacturing of aluminium matrix composites. Molten aluminium alloy was pushed into the mould cavity for 5 seconds with 8 atm piston pressure. Microstructural, mechanical and physical properties of aluminium composites were examined and the analyses of energy-dispersive spectrometry (EDS), X-ray diffraction (XRD) and scanning electron microscopy (SEM) and tensile test were performed for this. The experimental density of the non-reinforced sample was obtained as 2.62 g.cm-3, while the composites were changed between 2.71 and 2.72 g.cm-3 according to the pore structure. The highest tensile strength value was determined in aluminium composites with a pore density of 80 ppi reinforcement element with a value of 160 MPa.

中文翻译:

海绵复制制造的AlSi10Mg合金渗透到多孔SiC结构中

将AlSi10Mg铝铸造合金渗透到多孔碳化硅结构中,并研究了铝复合材料的微观结构,力学和物理性能。通过聚合物模板海绵复制法形成碳化硅多孔结构。每英寸具有45、60和80孔的网状和开孔聚氨酯海绵用于聚合物复制品的应用。为了使液态铝合金渗入多孔陶瓷结构中,最好采用高压压铸法。AlSi10Mg铝铸造合金用作制造铝基复合材料的基体合金。在8个大气压的活塞压力下,将熔融的铝合金推入模腔5秒钟。微观结构 检查了铝复合材料的机械和物理性能,并进行了能量色散光谱(EDS),X射线衍射(XRD)和扫描电子显微镜(SEM)的分析以及拉伸试验。非增强样品的实验密度为2.62 g.cm-3,而复合材料根据孔结构在2.71和2.72 g.cm-3之间变化。在孔密度为80 ppi增​​强元件,值为160 MPa的铝复合材料中确定了最高的拉伸强度值。cm-3根据孔隙结构而定。在孔密度为80 ppi增​​强元件,值为160 MPa的铝复合材料中确定了最高的拉伸强度值。cm-3根据孔隙结构而定。在孔密度为80 ppi增​​强元件,值为160 MPa的铝复合材料中确定了最高的拉伸强度值。
更新日期:2020-08-08
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