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| Effect of Electric Pulse on the Deformation Martensite and Corrosion Resistance of Stainless Steels |
| Zhilin Li |
| 北京化工大学材料学院 |
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Abstract The deformation induced martensite in metastable austenite stainless steels effects their physical and chemical properties. Worn metastable austenite stainless steel was treated with electric pulse of anode 60s-280s + cathode 30s-280s for 9h. XRD analyge, microhardness test, corrosion potential test and metallographic observation were used to analyze the amount of martensite , surface hardness and corrosion resistance before and after the treatment. The results show that the amount of martensite always decreases after the treatment. According to the various pulse width, the treatment can induce electrochemical annealing, it can also cause the priority corrosion of martensite. When electrochemically induced annealing happens, the treatment can not only keep the high hardness after the amount of martensite decreases, but also promote the corroson resistance of the stainless steel in Cl- containing solution.
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Received: 04 June 2003
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Corresponding Authors:
Zhilin Li
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