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| EFFECT OF HEAT TREATMENT PROCESSES ON SEAWATER CORROSION RESISTANCE PROPERTY OF 17-4PH STEEL |
| ZHAO Yi1,2, WANG Fu1 |
1. School of Material and Metallurgy，Northeastern University, Shenyang 110004
2. Capital Engineering & Research Incorporation Limited, Beijing 100176 |
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Abstract The corrosion resistance property in artificial seawater of 17-4PH steel after different heat treatment processes was investigated by electrochemical tests, and the corrosion morphology and microstructure were also analyzed. The results indicated that after solution and intermediate treatments the steel showed the best corrosion resistance property and excellent mechanical properties while aging at 520℃ for 4 hours. The microstructure became finer and the precipitation in grain boundaries increased with the increase of aging temperature and time in a certain range. The reverted austenite and copper precipitates that separated out while aging treatment were the major determinants of the corrosion resistance property of 17-4PH steel.
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Received: 28 October 2010
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Corresponding Authors:
ZHAO Yi
E-mail: zhaoyi@ceri.com.cn
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