| 定向凝固合金DZ17G室温疲劳裂纹扩展行为的研究 |
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| 引用本文： | 廖鄂斌,郭建亭,王淑荷.定向凝固合金DZ17G室温疲劳裂纹扩展行为的研究[J].航空材料学报,1999,19(1):39-44. |
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| 作者姓名： | 廖鄂斌 郭建亭 王淑荷 |
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| 作者单位： | 中国科学院金属研究所,沈阳,110015 |
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| 摘 要： | Fatigue crack growth behavior
of DZ17G at room temperature is studied at different testing conditions of loading
direction and loading frequency.The results indicate that the fatigue crack growth
rate(FCGR) is the largest on the specimen with loading angle 90°,smaller on that with
loading angle 0°,and the smallest on that with loading angle 45° due to crack deflection
effect.The influence of loading frequency upon FCGR is related to the range of stress
intensity factor ΔK.The dimension of precipitate γ′ has influence upon the dislocation
arrangement.Microcracks propagate along the γ channel.
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| 关 键 词： | 定向凝固高温合金 加载取向 加载频率 疲劳裂纹扩展速率 |
| 文章编号： | 1005-5053(1999)01-0039-06 |
| 修稿时间： | 1998-12-22 |
Research on fatigue crack growth behavior of DZ17G at room temperature |
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| LIAO E-bin,GUO Jian-ting,WANG Shu-he.Research on fatigue crack growth behavior of DZ17G at room temperature[J].Journal of Aeronautical Materials,1999,19(1):39-44. |
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| Authors: | LIAO E-bin GUO Jian-ting WANG Shu-he |
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| Abstract: | |
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| Keywords: | DS superalloy loading direction loading frequency fatigue crack growth rate |
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