|
|||||
|
|
| GH128铸态合金中硼的分布 | |
| 引用本文： | 万小军,任鹏,廖家欣.GH128铸态合金中硼的分布[J].湖南城市学院学报(自然科学版),2006,15(2):53-56. |
| 作者姓名： | 万小军 任鹏 廖家欣 |
| 作者单位： | 1. 湖南城市学院,计算机科学系,湖南,益阳,413000 2. 长沙理工大学教务处,长沙,410076 3. 长沙理工大学物理与电子工程系,长沙,410076 |
| 摘 要： | 采用高分辨率的径迹显微照相技术，研究了GH128铸态合金中硼的偏析和在均匀化、正火、调质热处理过程中硼分布的变化，并且分析了硼含量、加入稀土元素以及合金中Mo等元素对硼分布的影响．硼在铸态合金中有明显的偏析现象，并随着硼含量的增加而偏析加剧，经过常规的均匀化处理之后，铸态合金中硼分布状态受Mo偏析的影响非常显著．在一定的条件下，硼相沿着奥氏体的特定结晶学平面析出，或结晶界形成粗大连续网状的硼相，从而导致沿晶界的脆性断裂，实验表明稀土元素有保护硼的良好作用． |
| 关 键 词： | 径迹显微照相技术 分布 硼相 偏析 |
| 文章编号： | 1672-7304（2006）02-0053-04 |
| 收稿时间： | 2006-02-27 |
| 修稿时间： | 2006-02-27 |
The Distribution Search of Boron in Alloy GH128 |
|
| WAN Xiao-jun,REN Peng,LIAO Jia-xin.The Distribution Search of Boron in Alloy GH128[J].Journal of Hunan City University:Natural Science,2006,15(2):53-56. | |
| Authors: | WAN Xiao-jun REN Peng LIAO Jia-xin |
| Institution: | 1. Department of Computer Science, Hunan City University, Yiyang, Hunan 413000,China; 2. a. Academic Affairs Office; b. Department of Medical Education, Changsha University of Science and Technology, Changsha, Hunan 410076, China |
| Abstract: | The segregation and distribution of Boron varied with heat-treatment and homogenization in the casting alloy GH128 have been investigated by the high resolution microphotography of track.There is strong Boron's segregation,and it becomes more strongly with more Boron elements.After normal homogenization,the distribution of Boron may be strongly affected by the segregation of Mo.Under certain condition,the Boron bearing phases may precipitate either along certain austenite planes or at the grain boundaries to form coarse continuous net works,the cause brittle fracture.The results also showed that rare earth elements might act as good protective additions for Boron. |
| Keywords: | Microphotography of track distributing boron constituent segregation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |