本文選題：鋁鎂復(fù)合材料　切入點(diǎn)：納米SiC_p　出處：《粉末冶金技術(shù)》2017年03期

【摘要】：采用放電等離子體燒結(jié)(spark plasma sintering,SPS)技術(shù)制備了含質(zhì)量分?jǐn)?shù)為0%、0.5%、1.0%、2.0%和5.0%的納米SiC顆粒(SiC_p,平均粒徑為40 nm)增強(qiáng)鋁鎂復(fù)合材料,通過(guò)掃描電鏡(scanning electron microscope,SEM)觀察鋁鎂復(fù)合材料微觀組織形貌,并對(duì)復(fù)合材料進(jìn)行了力學(xué)性能測(cè)試,研究了不同質(zhì)量分?jǐn)?shù)納米SiC_p對(duì)復(fù)合材料相對(duì)密度和力學(xué)性能的影響規(guī)律,確定了制備復(fù)合材料最佳SiCp添加量。研究表明:隨著納米SiC_p質(zhì)量分?jǐn)?shù)的增加,復(fù)合材料的硬度逐漸增加,抗拉強(qiáng)度呈現(xiàn)先增加后降低的變化趨勢(shì),質(zhì)量分?jǐn)?shù)為1.0%的SiC_p增強(qiáng)鋁鎂復(fù)合材料的性能最好,相對(duì)密度和抗拉強(qiáng)度分別達(dá)到了98.36%和301.5 MPa。
[Abstract]:Aluminum-magnesium composites were prepared by spark plasma sintering (Spark plasma interning) technique. The nano-sized SiC particles containing 1.0% and 5.0% SiC particles were prepared by SICP technique. The microstructure and morphology of Al-Mg composites were observed by scanning electron microscopeSEM (SEM).The mechanical properties of the composites were tested and the effects of different mass fraction of nano-sized SiC_p on the relative density and mechanical properties of the composites were studied. The optimum addition amount of SiCp was determined.The results show that with the increase of SiC_p content, the hardness of the composites increases gradually, the tensile strength of the composites increases first and then decreases. The properties of the Al / mg composites reinforced by SiC_p with 1.0% mass fraction are the best.The relative density and tensile strength are 98.36% and 301.5 MPA, respectively.
【作者單位】： 北京科技大學(xué)新材料技術(shù)研究院;海安鷹球集團(tuán)有限公司;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51471023)
【分類號(hào)】：TB333
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本文編號(hào)：1685294