【摘要】：針對吹氣法制備的高孔隙率閉孔泡沫鋁,通過實驗和有限元分析研究泡壁材料性能對其壓縮性能的影響。向添加陶瓷顆粒的A356合金熔體中吹氣發(fā)泡制備實驗樣品并進(jìn)行單向壓縮。通過光學(xué)顯微鏡和掃描電鏡觀察泡壁的微觀組織和斷口組織。結(jié)果表明,泡壁中存在的顆粒團(tuán)聚、孔洞等缺陷和氧化膜削弱了其性能,因此,泡沫材料的性能與原材料性能有很大差別�；谠牧闲阅芎蛯嶓w材料性能的實驗結(jié)果,對泡沫鋁理想三維結(jié)構(gòu)進(jìn)行有限元分析。材料的平臺應(yīng)力與泡沫材料的屈服強(qiáng)度成正比。有限元模擬結(jié)果稍高于實驗結(jié)果,其部分原因是將實體材料性能看做泡壁材料性能導(dǎo)致的。
[Abstract]:The effect of the properties of foam wall materials on the compressive properties of aluminum foam with high porosity and closed porosity prepared by blowing method was studied by means of experiments and finite element analysis. The experimental samples were prepared by blowing and foaming into the melt of A356 alloy with ceramic particles and subjected to unidirectional compression. The microstructure and fracture surface of the bubble wall were observed by optical microscope and scanning electron microscope. The results show that the properties of foam materials are greatly different from those of raw materials because of the agglomeration of particles, pores and oxide film. Based on the experimental results of the properties of raw materials and solid materials, the ideal three-dimensional structure of aluminum foams is analyzed by finite element method. The platform stress of the material is directly proportional to the yield strength of the foam material. The finite element simulation results are slightly higher than the experimental results, partly because the properties of the solid materials are regarded as the properties of the foam wall materials.
【作者單位】： 清華大學(xué)材料學(xué)院;清華大學(xué)先進(jìn)成形制造教育部重點實驗室;
【基金】：Project(2013DFR50330)supported by the International Cooperation Project of Science and Technology Ministry of China
【分類號】：TG146.21

【共引文獻(xiàn)】

相關(guān)期刊論文 前10條

1 Yuli Ma;Xianyue Su;R.Pyrz;J.Ch.Rauhe;;A NOVEL THEORY OF EFFECTIVE MECHANICAL PROPERTIES OF CLOSED-CELL FOAM MATERIALS[J];Acta Mechanica Solida Sinica;2013年06期

2 楊永順;楊哲;虞跨海;梁斌;康興國;;閉孔泡沫鋁緩沖性能及其變形失效機(jī)理研究[J];功能材料;2014年08期

3 劉華鋒;王慧;曾令可;冼志勇;盧斌;;利用鋁型材廠工業(yè)廢渣增強(qiáng)輕質(zhì)磚性能[J];硅酸鹽通報;2014年04期

4 岳新艷;李振楠;郭冠宇;茹紅強(qiáng);;碳化硼--泡沫鋁雙層復(fù)合材料的制備及其防彈性能[J];北京科技大學(xué)學(xué)報;2014年08期

5 李妍妍;鄭志軍;王長峰;;閉孔泡沫金屬變形模式的有限元分析[J];爆炸與沖擊;2014年04期

6 徐朝陽;徐德良;賈，

本文編號：2302303