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Effect of Austenitization Temperature on Formation of Low Temperature Bainite

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Abstract:

The influence of austenitization temperature on the incubation period and bainitic transformation behaviours of the high-carbon silicon steel has been investigated. It was found that the nose temperature of bainite transformation and incubation period decreases with increasing austenitization temperature. The microstructure characteristics of the bainitic transformation products have been also observed. After isothermal heat treatment at 230°C for 20 mins, all samples austenitized at different temperatures produced a bainitic structure, which consists of packets of parallel ferrite laths. The major difference lies in the edge boundary morphology. Bainitic laths formed in low-temperature austenitization conditions has sharp saw-tooth edge boundaries, whereas bainite transformed from high-temperature austenitization conditions, have smooth wedge boundaries. Key Words: austenitization temperature; low-temperature bainite; incubation period;edge boundary

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Periodical:

Advanced Materials Research (Volumes 912-914)

Pages:

103-106

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.912-914.103

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Online since:

April 2014

Authors:

Lian Jie Yuan*, Qing Suo Liu, Bin Gao

Keywords:

Austenitization Temperature, Edge Boundary, Incubation Period, Low-Temperature Bainite

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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