| 定向凝固合金叶片的裂纹与再结晶研究 |
| |
| 引用本文： | 张卫方,田继丰,刘高远,赵爱国,姚戈,陶春虎. 定向凝固合金叶片的裂纹与再结晶研究[J]. 机械强度, 2003, 25(6): 671-674 |
| |
| 作者姓名： | 张卫方 田继丰 刘高远 赵爱国 姚戈 陶春虎 |
| |
| 作者单位： | 1. 北京航空材料研究院,失效分析中心,北京,100095
2. 中国科学院金属研究所,沈阳,110035 |
| |
| 摘 要： | 对定向凝固合金叶片的裂纹进行分析，在断口观察与金相组织分析的基础上，对叶片的失效模式与失效原因进行研究，并提出预防该类故障发生的措施。研究结果表明，定向凝固合金叶片的裂纹是由于叶片表面的再结晶而导致的。叶片表面的再结晶在叶片使用之前就已存在，是由于固溶热处理前叶片的表面存在塑性变形，在固溶热处理过程中形成的。
|
| 关 键 词： | DZA合金 定向凝固 叶片 裂纹 再结晶 高温合金 |
| 修稿时间： | 2002-09-28 |
CRACK AND RECRYSTALLIZATION OF BLADES MADE OF A DIRECTIONALLY SOLIDIFIED ALLOY |
| |
| ZHANG Weifang TIAN Jifeng LIU Gaoyuan ZHAO Aiguo YAO Ge TAO Chunhu. CRACK AND RECRYSTALLIZATION OF BLADES MADE OF A DIRECTIONALLY SOLIDIFIED ALLOY[J]. Journal of Mechanical Strength, 2003, 25(6): 671-674 |
| |
| Authors: | ZHANG Weifang TIAN Jifeng LIU Gaoyuan ZHAO Aiguo YAO Ge TAO Chunhu |
| |
| Affiliation: | ZHANG Weifang 1 TIAN Jifeng 2 LIU Gaoyuan 1 ZHAO Aiguo 1 YAO Ge 2 TAO Chunhu 1 |
| |
| Abstract: | The cracks on blades made of a directionally solidified superalloy were analyzed. The failure mode and cause were studied in virtue of fracture observation and metallographic analysis. The results show that the cracks on the superalloy blades are resulted from surface recrystallization. Owing to the plastic deformation on the blade surface, recrystallization formed on the solid soluble heat treatment. Before putting blade in to service, recrystallization zone is already exist on its two sides and surface. Finally, suggested measures are posed to prevent the recrystallization and crack failure for the superalloy blades. |
| |
| Keywords: | Directionally solidified superalloy Blade Recrystallization Crack |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
