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Acta Metall Sin  2011, Vol. 47 Issue (7): 877-881    DOI: 10.3724/SP.J.1037.2011.00275
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EFFECT OF Cu-ADDITION ON THE CORROSION BEHAVIOR OF Zr-2.5Nb ALLOYS IN 500 ℃/10.3 MPa SUPERHEATED STEAM
LI Qiang, LIANG Xue, PENG Jianchao, YU Kang, YAO Meiyi, ZHOU Bangxin
Laboratory for Microstructures, Shanghai University, Shanghai 200444
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LI Qiang LIANG Xue PENG Jianchao YU Kang YAO Meiyi ZHOU Bangxin. EFFECT OF Cu-ADDITION ON THE CORROSION BEHAVIOR OF Zr-2.5Nb ALLOYS IN 500 ℃/10.3 MPa SUPERHEATED STEAM. Acta Metall Sin, 2011, 47(7): 877-881.

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Abstract  Zr-2.5Nb-xCu (x=0.2, 0.5, mass fraction, %) specimens were annealed at 580 ℃ for 50 h and 620 ℃ for 2 h after β-quenching and cold rolling, and then corroded in autoclave with 500 ℃/10.3 MPa superheated steam. SEM and TEM equipped with EDS were employed to investigate their corrosion behaviors through analyzing the microstructures of the fracture surface of the oxide layers or of the cross-section of oxide layers. It was found that the addition of copper can improve the corrosion resistance of Zr-2.5Nb alloy, which is closely related to the increases in the fraction and size of columnar grains in the oxide film.
Key words:  Zr-2.5Nb alloy      copper      corrosion      oxide film      microstructure     
Received:  29 April 2011     
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Supported by National Natural Science Foundation of China (Nos.50871064 and 50971084), National High Technology Research and Development Program of China (No.2008AA031701), Natural Science Foundation of Shanghai (No.09ZR1411700) and Shanghai Leading Academic Discipline Project (No.S30107)
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LI Jiang
LIANG Xue
PENG Jian-Tiao
YU Kang
YAO Mei-Yi
ZHOU Bang-Xin

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https://www.ams.org.cn/EN/10.3724/SP.J.1037.2011.00275     OR     https://www.ams.org.cn/EN/Y2011/V47/I7/877

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