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| Fe_3Al网络结构多孔材料的制备及性能研究 | |
| 引用本文： | 续晶华,耿浩然,孙佳伟,徐福松,王守仁. Fe_3Al网络结构多孔材料的制备及性能研究[J]. 特种铸造及有色合金, 2010, 30(4). DOI: 10.3870/tzzz.2010.04.025 |
| 作者姓名： | 续晶华 耿浩然 孙佳伟 徐福松 王守仁 |
| 作者单位： | 1. 济南大学材料科学与工程学院 2. 山东大学化学与化工学院 3. 济南大学机械工程学院 |
| 基金项目： | 国家自然科学基金，山东省自然科学基金 |
| 摘 要： | 采用机械合金化法、退火工艺和热处理工艺制备了Fe3Al网络结构多孔材料,通过扫描电镜、XRD观察分析了该结构材料的形貌特征,研究了烧结温度、升温速度、孔隙率对该材料的抗压强度和断裂韧度的影响,并初步探讨了材料的断裂机理.结果表明,随着烧结温度的升高,Fe3Al多孔材料中的孔筋逐渐致密,1 420 ℃烧结时,材料的组织、性能最好,烧结温度继续升高时材料出现明显坍塌变形,不利于材料的成形.孔隙率是影响Fe3Al多孔材料力学性能的主要因素,通过较低的烧结升温速率可降低孔隙率,获得结构致密的骨架,从而有助于提高多孔材料的抗压强度和断裂韧度.利用桥接和自愈合机理探讨了改善多孔材料力学性能的途径,通过添加Ti和控制适量的孔洞,提高了材料的抗压强度和断裂韧度. |
| 关 键 词： | 网络结构 孔隙率 |
Preparation and Performance of the Fe_3Al Intermetallic Network Structure Materials |
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| Xu Jinghua,Geng Haoran,Sun Jiawei,Xu Fusong,Wang Shouren. Preparation and Performance of the Fe_3Al Intermetallic Network Structure Materials[J]. Special Casting & Nonferrous Alloys, 2010, 30(4). DOI: 10.3870/tzzz.2010.04.025 | |
| Authors: | Xu Jinghua Geng Haoran Sun Jiawei Xu Fusong Wang Shouren |
| Affiliation: | Xu Jinghua1,Geng Haoran1,Sun Jiawei2,Xu Fusong1,Wang Shouren3 (1. School of Materials Science , Engineering,University of Jinan,Jinan,China,2. School of Chemistry , Chemical Engineering,Sh,ong University,3. School of Mechanical Engineering,China) |
| Abstract: | Fe3Al intermetallic network structural materials were prepared by mechanical alloying, annealing and heat treatment, and effects of sintering temperature, temperature increment rate, porosity on compressive strength and fracture toughness of the materials were investigated through observing morphology using SEM (scanning electron microscope), XRD (X-ray diffraction), meanwhile, fracture mechanism of the materials were approached also. The results demonstrate that with increasing in sintering temperature, po... |
| Keywords: | Fe3Al |
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