CHARACTERISTIC OF DYNAMIC RECRYSTALLIZATION AND ITS INFLUENCE ON CORROSION SENSITIVITY OF COPPER ALLOY

J Chin Soc Corr Pro

2012, Vol. 32

Issue (2): 102-108 DOI:

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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

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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 words: copper alloy corrosion dynamic recrystallization fresh water

Received: 29 December 2010

ZTFLH:

TG172.5

Corresponding Authors: ZHAO Yuehong E-mail: zhaoyuehong5@126.com

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ZHAO Yuehong, LIN Leyun, WANG Zhenhai. CHARACTERISTIC OF DYNAMIC RECRYSTALLIZATION AND ITS INFLUENCE ON CORROSION SENSITIVITY OF COPPER ALLOY. J Chin Soc Corr Pro, 2012, 32(2): 102-108.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2012/V32/I2/102

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