| 黄台发电厂7#机末级叶片断口分析 |
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| 引用本文： | 岳增武,周爱生.黄台发电厂7#机末级叶片断口分析[J].理化检验(物理分册),1999,35(8):365-367,362. |
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| 作者姓名： | 岳增武 周爱生 |
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| 作者单位： | 山东电力科学研究院 济南250021 |
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| 摘 要： | 对黄台发电厂７＃机末级叶片断口进行了分析。认为，在该叶片进汽侧靠近头部的硬质合金堆焊层中，由于成分偏析，夹杂等原因产生微小裂纹，并在运行中产生应力腐蚀或腐蚀疲劳裂纹并扩展，最终导致叶片断裂。
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| 关 键 词： | 腐蚀疲劳 应力腐蚀 疲劳裂纹 汽轮机 叶片 |
FRACTOGRAPHIC ANALYSIS OF THE LAST STAGE TURBINE BLADE OF No.7 UNIT IN HUANGTAI POWER PLANT |
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| Yue Zengwu,Zhou Aisheng.FRACTOGRAPHIC ANALYSIS OF THE LAST STAGE TURBINE BLADE OF No.7 UNIT IN HUANGTAI POWER PLANT[J].Physical Testing and Chemical Analysis Part A:Physical Testing,1999,35(8):365-367,362. |
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| Authors: | Yue Zengwu Zhou Aisheng |
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| Affiliation: | Shandong Electric Power Research Institute |
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| Abstract: | The fracture surface of the blade was analyzed. The result shows that segregation and inclusions in the hard alloy welding layer caused initiation of micro-crack , leading to the fracture of the blade during operation as a result of stress corrosion and corrosion fatigue. |
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| Keywords: | Corrosion fatigue Stress corrosion cracking Fatigue crack |
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