| AZ91镁合金泡沫材料的制备 |
| |
| 引用本文： | 吕学旺,邱克强,于波,任英磊. AZ91镁合金泡沫材料的制备[J]. 铸造, 2007, 56(3): 242-244 |
| |
| 作者姓名： | 吕学旺 邱克强 于波 任英磊 |
| |
| 作者单位： | 1. 沈阳工业大学材料学院,辽宁沈阳,110023
2. 沈阳铸造研究所,辽宁沈阳,110022 |
| |
| 摘 要： | 利用NaCl颗粒作为预制型,采用渗流铸造方法制备了AZ91泡沫合金,样品孔隙之间具有良好的连通性。泡沫密度为0.724g/cm3,孔隙率为0.602。压缩试验结果表明,AZ91镁合金泡沫材料的塑性变形能力明显高于铸态AZ91镁合金。在孔隙被压合的过程中,泡沫材料在低应力条件下发生剪切破坏。这一变形机制在金属泡沫材料中尚未见到报道。
|
| 关 键 词： | 渗流铸造 AZ91镁合金泡沫 破坏机制 |
| 文章编号： | 1001-4977(2007)03-0242-03 |
| 修稿时间： | 2006-07-15 |
Fabrication of AZ91 Magnesium Alloy Foam |
| |
| L Xue-wang,QIU Ke-qiang,YU Bo,REN Ying-lei. Fabrication of AZ91 Magnesium Alloy Foam[J]. Foundry, 2007, 56(3): 242-244 |
| |
| Authors: | L Xue-wang QIU Ke-qiang YU Bo REN Ying-lei |
| |
| Affiliation: | 1. School of Materials Science and Engineering, Shenyang Universityof Technology, Shenyang 110023, Liaoning, China; 2. Shenyan Research Institute of Foundry, Shenyang, 110022, Liaoning, China |
| |
| Abstract: | The AZ91 magnesium alloy foam with a diameter of 9mm was fabricated by using vacuum melt infiltration and water quenching methods. NaCl salt was used as a placeholder in this investigation. The porosity and density were 0.602 and 0.724 g/cm3 respectively for the AZ91 magnesium foam. The pores were evenly distributed in the material. The plastic strain during compression for the AZ91 magnesium alloy foam is much higher than that of the as-cast AZ91 magnesium alloy fabricated by the same process. The fracture event occurred at low stress during the pores vanishing. Which is the first evidence observed in metal foam materials during compression according to our knowledge. |
| |
| Keywords: | melt infiltration AZ91 magnesium alloy foam fracture mechanism |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
