| 利用原位观察技术测定TC4钛合金的疲劳裂纹扩展门槛值 |
| |
| 引用本文： | 张敏,宋西平,林均品,焦泽辉,于慧臣,王习术.利用原位观察技术测定TC4钛合金的疲劳裂纹扩展门槛值[J].理化检验(物理分册),2012(4):224-227. |
| |
| 作者姓名： | 张敏 宋西平 林均品 焦泽辉 于慧臣 王习术 |
| |
| 作者单位： | 北京科技大学新金属材料国家重点实验室;中航工业北京航空材料研究院检测研究中心;中航工业北京航空材料研究院先进高温结构材料国防科技重点实验室;清华大学工程力学系 |
| |
| 基金项目： | 国家973计划子课题资助项目(2011CB605506) |
| |
| 摘 要： | 针对目前金属材料疲劳裂纹扩展门槛值测定中存在的测定周期长、试样尺寸较大以及单位周次裂纹扩展长度测量误差较大等问题,采用扫描电镜原位观察技术测定了TC4钛合金的疲劳裂纹扩展门槛值,即通过扫描电镜对裂纹扩展长度的实时精确测定实现快速获得材料的疲劳裂纹扩展门槛值。结果表明：利用该方法测得的TC4钛合金的疲劳裂纹扩展门槛值与已报道的数据基本一致,并且具有快速简便等优点,表明该方法可以用来测定金属材料的疲劳裂纹扩展门槛值。
|
| 关 键 词： | 疲劳裂纹扩展门槛值 扫描电镜 原位观察 TC4钛合金 |
Determination of Fatigue Crack Growth Threshold of TC4 Titanium Alloy by In-situ Observation Technology |
| |
| ZHANG Min,SONG Xi-ping,LIN Jun-pin,JIAO Ze-hui,YU Hui-chen,WANG Xi-shu.Determination of Fatigue Crack Growth Threshold of TC4 Titanium Alloy by In-situ Observation Technology[J].Physical Testing and Chemical Analysis Part A:Physical Testing,2012(4):224-227. |
| |
| Authors: | ZHANG Min SONG Xi-ping LIN Jun-pin JIAO Ze-hui YU Hui-chen WANG Xi-shu |
| |
| Affiliation: | 1.State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing,Beijing 100083,China;2.Testing Research Center for Aeronautical Materials,Beijing Institute of Aeronautical Materials,Beijing 100095,China;3.National Key Laboratory of Science and Technology on Advanced High Temperature Structural Materials,Beijing Institute of Aeronautical Materials,Beijing 100095,China;4.Department of Engineering Mechanics,Tsinghua University,Beijing 100084,China) |
| |
| Abstract: | Aimed at solving the problems in the determination of fatigue crack growth threshold of metal materials,such as longer testing period,larger specimen dimension and lower measurement accuracy in crack propagation length,an in-situ observation method was used to determine the fatigue crack growth threshold of TC4 titanium alloy.By this scanning electron microscope in-situ observation technology,the measurement accuracy of crack growth length could be improved and the testing period could be shortened.The results show that the fatigue crack growth threshold of TC4 titanium alloy tested by this method was consistent with the data that had been reported,and the measuring time was much less compared with the traditional method.This implied that this method was an effective method in determination of fatigue crack growth threshold and can be used as an ideal method to determine the fatigue crack growth threshold of metal materials. |
| |
| Keywords: | fatigue crack growth threshold SEM in-situ observation TC4 titanium alloy |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
