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HomeKey Engineering MaterialsKey Engineering Materials Vols. 622-623Study on Hot-Working Behavior of High Carbon Steel...

Study on Hot-Working Behavior of High Carbon Steel / Low Carbon Steel Composite Material Using Processing Map

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Abstract:

The high carbon steel (HCS)/low carbon steel (LCS) laminated composite made by centrifugal casting technology was subjected to hot compression tests on Gleeble 3500 thermomechanical simulator in a range of temperatures (800-1100 ^oC) and strain rates (0.02-10 s^-1). The hot-working behavior of the laminate was characterised by analysing the flow stress-strain curves and constructing the processing map based on dynamic materials model via superimposing efficiency of power dissipation and flow instability maps. The safe and unsafe processing conditions were identified in the processing map which was validated by microstructural examinations. Banded microstructure and micro-shear cracks occurred in the unsafe domains were responsible for the flow instability, while dynamic recrystallisation in stable domains with high efficiency of power dissipation imparted a good workability to the laminate. The optimum hot-working parameters were determined to be: (i) 800-1050 ^oC and 0.02-0.04 s^-1, (ii) 800-1045 ^oC and 2.5-10 s^-1 and (iii) 1050-1100 ^oC and 0.02-2.5 s^-1.

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Metal Forming 2014

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Periodical:

Key Engineering Materials (Volumes 622-623)

Pages:

330-339

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.622-623.330

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Online since:

September 2014

Authors:

Xing Jian Gao, Zheng Yi Jiang*, Dong Bin Wei, Si Hai Jiao, Deng Fu Chen

Keywords:

Dynamic Softening, Laminated Composite, Processing Map, Work Hardening

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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