| 黄铜温度计套管汞裂破坏的观察 |
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| 引用本文： | 刘钧泉,张绍举.黄铜温度计套管汞裂破坏的观察[J].装备环境工程,2007,4(5):18-22. |
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| 作者姓名： | 刘钧泉 张绍举 |
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| 作者单位： | 华南理工大学,工业装备及控制工程学院,广州,510640 |
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| 摘 要： | 对一起黄铜汞裂破坏的构件进行形貌和金相分析,结合能谱测试,讨论了汞裂破坏形式、汞裂破坏机制,汞裂与一般沿晶型应力腐蚀破裂及晶间腐蚀的差别.指出汞裂是汞或其蒸气沿应力作用造成的缺陷部位深入组织内部,通过物理或化学作用与原来的组织在晶界生成强度低的新相,破裂沿新相区域出现.
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| 关 键 词： | 黄铜 应力 汞裂 黄铜 温度计套管 破坏机制 Cracking Tube Thermometer Brass 相区域 应力腐蚀破裂 强度 晶界 化学作用 物理 组织 缺陷 应力作用 蒸气 差别 晶间腐蚀 晶型 |
| 文章编号： | 1672-9242（2007）05-0018-05 |
| 修稿时间： | 2007-08-01 |
Observation of Brass Thermometer Tube Cracking |
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| LIU Jun-quan,ZHANG Shao-ju.Observation of Brass Thermometer Tube Cracking[J].Equipment Environmental Engineering,2007,4(5):18-22. |
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| Authors: | LIU Jun-quan ZHANG Shao-ju |
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| Institution: | South China University of Technology, Guangzhou 510640, China |
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| Abstract: | A brass component cracked in mercury was analyzed with macroscopic and metallographic technique. Combined with energy spectrum test, the form and mechanism of mercury induced cracking were discussed. The differences between mercury induced cracking and intergranular stress corrosion cracking, mercury induced cracking and intergranular corrosion were compared. It was pointed out that mercury induced cracking only happens in areas of intergranular new phase which produced by physics or chemistry action of mercury and its vapor together with original structure and was weaker than the original. |
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| Keywords: | brass tension mercury induced cracking |
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