A New Approach to Calculate the γ Orientation Maps in Steels

Abstract:

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We propose a new approach to automatically reconstruct the  orientation map from the ’ map inherited by the bainitic or martensitic ’ phase transformation. Our model comprises two main steps (1) identification of reliable fractions of parent grains – each  fraction orientation is determined from neighbouring variants related to a unique  orientation with a low tolerance angle; (2) expansion of these fractions by collecting adjacent variants being in orientation relation (OR) with the  orientation of the initial fraction - using now a higher tolerance around the strict OR. The code was tested on ’ maps we built from reference  maps to control some characteristics of the transformation, i.e. the type of OR used, the spread around OR, the number of inherited variants. The results show that even with a large spread around OR, the shape and orientation of most of the  grains are accurately calculated.

Info:

Periodical:

Solid State Phenomena (Volume 160)

Edited by:

H. Klein and R.A. Schwarzer

Pages:

203-210

DOI:

10.4028/www.scientific.net/SSP.160.203

Citation:

P. Blaineau et al., "A New Approach to Calculate the γ Orientation Maps in Steels", Solid State Phenomena, Vol. 160, pp. 203-210, 2010

Online since:

February 2010

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Price:

$35.00

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