International Journal of Scientific & Technology Research

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IJSTR >> Volume 2- Issue 6, June 2013 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

Improvement In The Corrosion Rate And Mechanical Properties Of Low Carbon Steel Through Deep Cryogenic Treatment.

[Full Text]



Harpreet Singh, Er. B. S. Ubhi, Er. Harvinder Lal.



Keywords: Deep Cryogenic treatment, mild steel, corrosion resistance, Rockwell hardness, heat treatment.



Abstract- Exploration of the benefit of cryotreatment for achieving improvement in corrosion rate of mild steel is a topic of current research interest. This study is concerned with the effect of deep cryogenic treatment at temperature of -1930 C on the corrosion rate and mechanical properties. A series of corrosion rate tests have been carried out to cryotreated samples. The specimen were divided into two groups, the first group was subjected to conventional heat treatment process at a temperature of 9500 C for about 1 hour and the other group was subjected to deep cryogenic treatment for about 36 hours at a temperature of -1930 C, followed by tempering at 1500 C for about 1 hour to both the groups. The results have shown that after DCT the corrosion rate and mechanical properties of the samples were all improved. The changes in microstructure due to (DCT) were clearly noticeable, the grain boundaries were no longer visible and the microstructure consists of baninite, martensite and retained austenite.



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