Synthesis and Properties of Recycled Fe-Al Based Multiphase Composites

再生铁铝基多相复合材料的合成与性能

基本信息

批准号：
11650706
负责人：
KYOSUKE Yoshimi
金额：
$ 2.24万
依托单位：
TOHOKU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2001
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11650706/
关键词：
iron aluminum intermetallic compound atomic vacancy recycle earth environment チタン銅水素吸蔵合金

项目摘要

Mesoporous FeAl intermetallic compound formed by vacancy clusteringIn this study, it was found that a large quantity of micro pores of several nanometers are generated near and interior to the ribbons of B2-type FeAl intermetallic compound produced by a rapid solidification technique when the ribbons are annealed around 723 K. Furthermore, in this study, the morphology and crystallography of the nanopores was clarified by scanning and transmission electron microscopy, and atomic force microscopy. Moreover, considerations based on energetics concerning vacancy clustering was given by thermal analysis.Microstructure and High Temperature Oxidation Resistance of Recycled Fe-Al alloysUsing ground sludge of bearing steels yielded when bearings are manufactured and pellets of waste aluminum cans, recycled Fe-Al alloys were produced. In this study, microstructure of the produced alloys was observed by scanning electron microscopy, constituent phases therein were indentified by X-ray diffractometry, high temperature oxidation resistance of the alloys was examined, and then the potential of the recycled Fe-Al alloys was discussed. Consequently, the recycled Fe-Al alloys exhibit excellent oxidation resistance at high temperatures, which comparable to binary Fe-Al intermetallic compounds, indicating it is possible to produce highly value-added Fe-Al alloys by utilizing scraps.Theoretical Study on Mechanical Properties of Aluminides and SilicidesIn this study, elastic stability of dislocations was investigated for FeAl and Fe_3Si in order to give some interpretations to mechanical properties of the compounds. Furthermore, a semi-empirical model was proposed to predict the cleavage resistance of the compounds, and this model was found to be very useful to do that by comparing several experimental data previously published.

空位团聚形成的介孔FeAl金属间化合物研究发现，采用快速凝固技术制备的B2型FeAl金属间化合物带材在退火时，在带材附近和内部产生大量数纳米级的微孔。约723 K。此外，在这项研究中，通过扫描和透射电子显微镜以及原子力显微镜阐明了纳米孔的形态和晶体学。此外，还通过热分析给出了空位聚集的能量学考虑。再生铁铝合金的显微组织和高温抗氧化性能利用轴承钢生产过程中产生的污泥和废铝罐颗粒，对再生铁铝合金进行了研究。产生的。本研究通过扫描电镜观察了所生产合金的显微组织，通过X射线衍射分析了其中的组成相，并考察了合金的高温抗氧化性能，并对铁铝合金的再生潜力进行了探讨。因此，回收的铁铝合金在高温下表现出优异的抗氧化性能，可与二元铁铝金属间化合物相媲美，表明利用废钢生产高附加值的铁铝合金是可能的。铁铝合金力学性能的理论研究铝化物和硅化物在这项研究中，研究了FeAl和Fe_3Si的位错弹性稳定性，以便对化合物的机械性能给出一些解释。此外，还提出了一个半经验模型来预测化合物的裂解抗性，通过比较先前发表的几个实验数据，发现该模型非常有用。