| 稀土元素La,Ce对机械合金化TiAl合金显微组织和性能的影响 |
| |
| 引用本文： | 洪雨,吴玉程,李云,汪峰涛,王庆平,李东辉.稀土元素La,Ce对机械合金化TiAl合金显微组织和性能的影响[J].航空材料学报,2009,29(4):17-20. |
| |
| 作者姓名： | 洪雨 吴玉程 李云 汪峰涛 王庆平 李东辉 |
| |
| 作者单位： | 1. 合肥工业大学,材料科学与工程学院,合肥,230009
2. 合肥工业大学,材料科学与工程学院,合肥,230009;安徽理工大学,材料科学与工程学院,安徽,淮南,232001 |
| |
| 基金项目： | 安徽省自然科学基金，合肥工业大学创新群体基金 |
| |
| 摘 要： | 采用机械合金化结合粉末冶金技术制备Ti-44.7Al-xLa-yCe(原子分数/%,下同)合金材料.利用扫描电镜和金相显微镜研究不同La,Ce添加量对机械合金化TiAl基合金的显微组织的影响,并对合金的力学性能进行测试.研究表明,通过机械合金化在TiAl基合金系统中添加微量稀土元素La,Ce对TiAl基合金的细化作用非常明显,TiAl的强度开始随着稀土元素La的增加而增加,当La元素含量为0.5%时,达到峰值,然后强度随稀土含量的增加而下降;而合金的强度却随添加Ce的含量的增加而直线下降,同时添加稀土La的TiAl合金的强度远高于加稀土Ce的TiAl合金的强度.
|
| 关 键 词： | 机械合金化 稀土元素 TiAl基合金 显微结构 抗弯强度 |
Effect of Rare Earth La and Ce on Microstructure and Properties of TiAl Alloy Prepared by Mechanical Alloying |
| |
| HONG Yu,WU Yu-cheng,LI Yun,WANG Feng-tao,WANG Qing-ping,LI Dong-hui.Effect of Rare Earth La and Ce on Microstructure and Properties of TiAl Alloy Prepared by Mechanical Alloying[J].Journal of Aeronautical Materials,2009,29(4):17-20. |
| |
| Authors: | HONG Yu WU Yu-cheng LI Yun WANG Feng-tao WANG Qing-ping LI Dong-hui |
| |
| Institution: | 1.School of Materials Science and Engineering;Hefei University of Technology;Hefei 230009;China;2.School of Materials Science and Engineering;Anhui University of Science and Technology;Huainan 232001;Anhui China |
| |
| Abstract: | Ti-44.7Al-xLa-yCe(at%) alloys were prepared by mechanical alloying with subsequent traditional powder metallurgy technique.The effect of the different La and Ce contents on microstructures was investigated by using scanning electron microscopy and metallographic microscope.The mechanical property of alloys was measured.The results show that the minim adding of rare earth as La and Ce into TiAl based alloy system have obvious effect on thinning the alloy by machine alloying.The bending strength of Ti-Al allo... |
| |
| Keywords: | mechanical alloying rare earth TiAl alloys microstructure bending strength |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
