CORROSION BEHAVIOR OF Fe-20Cr ALLOY TREATEDBY ULTRASONIC SHOT PEENING TECHNIQUE〖ST〗〖HT〗〖WT〗〖KH1D〗

J Chin Soc Corr Pro

2002, Vol. 22

Issue (6): 326-329 DOI:

Research Report

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CORROSION BEHAVIOR OF Fe-20Cr ALLOY TREATEDBY ULTRASONIC SHOT PEENING TECHNIQUE〖ST〗〖HT〗〖WT〗〖KH1D〗

Xueli Li;Ying Li;Fuhui Wang

中科院金属所金属腐蚀与防护国家重点实验室

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Xueli Li; Ying Li; Fuhui Wang. CORROSION BEHAVIOR OF Fe-20Cr ALLOY TREATEDBY ULTRASONIC SHOT PEENING TECHNIQUE〖ST〗〖HT〗〖WT〗〖KH1D〗. J Chin Soc Corr Pro, 2002, 22(6): 326-329 .

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Abstract Electrochemical methods and XRD，EDX，SEM，EPMA tec hnique were used to investigate the corrosion performance of nanocrystallized Fe -20Cr surface which was fabricated by using an ultrasonic shot peening(USSP)tec hnique,and the corrosion solution was 0.05 mol/L H2SO4+0.5 mol/L NaCl.The re sults show that the capability of corrosion resistance of the SNC Fe-20Cr alloy was lower than the cast alloy.Contrast to the cast alloy,the deduce of the grain size,the passive element of Cr being less uniform,and the remnant strain caused by USSP technique are thought to be the main reasons which result in the poorer corrosion resistance of nanocrystal alloy.

Key words: USSP SNC Fe-20Cr passive remnant stress

Received: 30 March 2001

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	Xueli Li
	Ying Li
	Fuhui Wang

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