The Effect of Quenching Media on the Microstructure and Mechanical Properties of SA508-3 Steel

Abstract:

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Three different quenching media (water, oil and air) were used to compare the effect of cooling rate on the microstructure and mechanical properties of SA508-3 steel. The result has demonstrated that the microstructure for water-quenched specimen is the mixture of martensite and lower bainite, for oil-quenched specimen is the mixture of upper bainite,lower bainite and a little martensite, while for air-cooled specimen is mostly granular bainite. The product of water and oil Q&T was tempered martensite with qualified mechanical properties. The air-cooled granular bainite was translated to massive and allotriomorphic ferrite during tempering, which had poor mechanical properties. To avoid the formation of granular bainite, it is necessary to increase the cooling rate to above 5°C/s.

Info:

Periodical:

Advanced Materials Research (Volumes 311-313)

Edited by:

Zhongning Guo

Pages:

974-977

DOI:

10.4028/www.scientific.net/AMR.311-313.974

Citation:

L. H. Hao et al., "The Effect of Quenching Media on the Microstructure and Mechanical Properties of SA508-3 Steel", Advanced Materials Research, Vols. 311-313, pp. 974-977, 2011

Online since:

August 2011

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Price:

$35.00

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