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51317--9690-Effect on Corrosion Behavior of the Heat Treatment Temperature of 30408 Stainless Steel

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Samples simulating the continuous changing structures of UNS S30400 heat affected zone (HAZ) were prepared for examination using metallographic structural analysis, corrosion morphological observations, and traditional electrochemical measurements to characterize the intergranular corrosion and pitting resistance.

 

Product Number: 51317--9690-SG
ISBN: 9690 2017 CP
Author: Bo Zhao
Publication Date: 2017
Industries: Materials Selection and Design , Science of Corrosion
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The heating air cooling and water cooling technology were used on the 30408 stainless steel to simulate the microstructure of the different location in the heat affected zone (HAZ) meanwhile the electrochemical method and the immersion test were used to compare the pitting corrosion behavior of the different microstructure. The result showed that the grain growth tendency was obvious in both of the air and water cooling treatment with the heat treatment temperature increasing. The minimum of the anti-corrosion capacity especially the resistance to pitting of air cooling microstructure was at the temperature of 1300² C and the water cooling microstructure was at the 1100² C.

Keywords: Simulated HAZ structures, Intergranular corrosion, Pitting corrosion.

The heating air cooling and water cooling technology were used on the 30408 stainless steel to simulate the microstructure of the different location in the heat affected zone (HAZ) meanwhile the electrochemical method and the immersion test were used to compare the pitting corrosion behavior of the different microstructure. The result showed that the grain growth tendency was obvious in both of the air and water cooling treatment with the heat treatment temperature increasing. The minimum of the anti-corrosion capacity especially the resistance to pitting of air cooling microstructure was at the temperature of 1300² C and the water cooling microstructure was at the 1100² C.

Keywords: Simulated HAZ structures, Intergranular corrosion, Pitting corrosion.

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