| 原位观察1420Al—Li合金疲劳裂纹的“自抑制” |
| |
| 引用本文： | 崔建国 戴耀. 原位观察1420Al—Li合金疲劳裂纹的“自抑制”[J]. 金属学报, 1999, 35(9): 951-954 |
| |
| 作者姓名： | 崔建国 戴耀 |
| |
| 作者单位： | [1]西安交通大学金属材料强度国家重点实验室 [2]中国机械工程学会表面工程研究所 |
| |
| 基金项目： | 国家自然科学基金!59731020 |
| |
| 摘 要： | 本文对１４２０Ａｌ－Ｌｉ合金厚板采用紧凑拉伸、三点弯曲、电镜原位拉伸疲劳力等方法，不同取向的疲劳裂纹扩展行为。观测了长裂纹扩展路径形态，讨论了层状结构与材料疲劳性能之间的关系，结果表明，层片的界面对板材的疲劳性能具有重要影响，在裂纹扩展过程中，层片与裂纹尖端相互作用，通过不同的外化答独１４２０合金裂纹扩 阻力在不同取向出现显著差异，在Ｌ－Ｔ和Ｔ－Ｓ取向时，在△Ｋ为３－４和６－９ＭＰａ．ｍ１／２范围
|
| 关 键 词： | 疲劳裂纹 外韧化 铝锂合金 自抑制 原位观察 |
IN SITU SEM OBSERVAION OF SELF-ARRESTING OF FATIGUE CRACKS IN Al-Li ALLOY 1420 THICK PLATE |
| |
| CUI Jianguo, FU Yonghui, LI Nian, SUN Jun, HE JiawenState Key Laboratory for Mechanical Behavior of Materials,Xi'an Jiaotong University,Xi'an DAI YaoSurface Engineering Research Institute of Chinese Mechanical Engineering Society,Beijing Co. IN SITU SEM OBSERVAION OF SELF-ARRESTING OF FATIGUE CRACKS IN Al-Li ALLOY 1420 THICK PLATE[J]. Acta Metallurgica Sinica, 1999, 35(9): 951-954 |
| |
| Authors: | CUI Jianguo FU Yonghui LI Nian SUN Jun HE JiawenState Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University Xi'an DAI YaoSurface Engineering Research Institute of Chinese Mechanical Engineering Society Beijing Co |
| |
| Affiliation: | CUI Jianguo, FU Yonghui, LI Nian, SUN Jun, HE JiawenState Key Laboratory for Mechanical Behavior of Materials,Xi'an Jiaotong University,Xi'an 710049DAI YaoSurface Engineering Research Institute of Chinese Mechanical Engineering Society,Beijing 100072Co |
| |
| Abstract: | |
| |
| Keywords: | Al-Li alloy fatigue crack extrinsic toughening |
| 本文献已被 CNKI 维普 等数据库收录！ |
