Control of Martensitic Morphology in Thermal-Mechanical Processing of Ferrous Alloys

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Abstract:

The quantitative relationships are suggested that the applied stress decreases the nucleation barrier and activation energy of nucleation of martensitic transformation, and strain increases the nucleus sites. Taking Fe-20Ni-0.5C and Fe-25Ni-0.66C alloys as examples, their different martensitic morphologies in thermal-mechanical processing can be explained and the origin of such a difference may be revealed based on the above theoretical analysis. Accordingly, the control of martensitic morphologies in thermal-mechanical processing of ferrous alloys will become possible.

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Materials Science Forum (Volumes 475-479)

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69-72

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January 2005

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© 2005 Trans Tech Publications Ltd. All Rights Reserved

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