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中国腐蚀与防护学报  2012, Vol. 32 Issue (2): 102-108    
  研究报告 本期目录 | 过刊浏览 |
动态再结晶特征及其对黄铜腐蚀敏感性的影响
赵月红,林乐耘,王振海
北京有色金属研究总院 北京 100088
CHARACTERISTIC OF DYNAMIC RECRYSTALLIZATION AND ITS INFLUENCE ON CORROSION SENSITIVITY OF COPPER ALLOY
ZHAO Yuehong, LIN Leyun, WANG Zhenhai
Beijing General Research Institute for Nonferrous Metals, Beijing 100088
全文: PDF(2793 KB)  
摘要: 研究了具有不同组织结构的铜合金管材在淡水中的腐蚀行为。合金存在大量粒径小于5µm的晶粒,且大小晶粒差别显著,表现为不完全再结晶的组织结构。大量细小晶粒的存在增加了铜合金在淡水中的腐蚀敏感性,主要表现为表面膜层不稳定、膜层鼓泡脱落、出现微裂纹和沿晶腐蚀。不完全再结晶的组织可以形成腐蚀通道,使合金的腐蚀迅速向纵深发展。这种组织来源于热加工中的动态再结晶过程,因某种原因保留到了冷加工及其热处理过程之后。
关键词 铜合金腐蚀动态再结晶淡水    
Abstract:The corrosion behavior of copper alloy tube with different microstructures in fresh water was investigated in this paper. A lot of minute grains with less than 5 µm diameter were discovered in the alloy matrix, indicating imperfect recrystallization. The existence of many micro-grains made local corrosion of copper alloy much more sensitive when servicing in fresh water, during which the film was unstable and peeled and micro cracking and intergranular corrosion appeared. Furthermore, this kind of microstructure with imperfect recrystallization could form corrosion channel and make the corrosion developing along grain boundary quickly. The microstructure was from dynamic recrystallization in hot deformation and remained in the material structure after cold working and heat treatment.
Key wordscopper alloy    corrosion    dynamic recrystallization    fresh water
收稿日期: 2010-12-29     
ZTFLH: 

TG172.5

 
基金资助:

国家自然科学基金项目(50701008)资助

通讯作者: 赵月红     E-mail: zhaoyuehong5@126.com
Corresponding author: ZHAO Yuehong     E-mail: zhaoyuehong5@126.com
作者简介: 赵月红,1973年,女,高级工程师,研究方向为有色金属腐蚀与防护

引用本文:

赵月红,林乐耘,王振海. 动态再结晶特征及其对黄铜腐蚀敏感性的影响[J]. 中国腐蚀与防护学报, 2012, 32(2): 102-108.
DIAO Ru-Hong. CHARACTERISTIC OF DYNAMIC RECRYSTALLIZATION AND ITS INFLUENCE ON CORROSION SENSITIVITY OF COPPER ALLOY. J Chin Soc Corr Pro, 2012, 32(2): 102-108.

链接本文:

https://www.jcscp.org/CN/      或      https://www.jcscp.org/CN/Y2012/V32/I2/102

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