Abstract
Texture development during thermomechanical processing of a newly developed ultrahigh strength microalloyed steel was investigated, with particular attention to through thickness texture gradient. A considerable texture gradient was evident, particularly in the 1/2 depth compared to the other three positions (surface, 1/8 depth, 1/4 depth). The most intense deformation texture at all depths was {113}〈110〉, which was also more prevalent at the centre than elsewhere, implying an overall dominance of {112}〈111〉 in the deformed austenite during hot rolling. The recrystallisation texture of austenite, {100}〈001〉, transformed into {100}〈011〉 component in the ferrite indicated an increase in intensity with increase in depth. The {100}〈011〉 type of texture has an undesirable effect on the delamination behaviour of steels. However, the centre and 1/4 depth contained considerable intensity of the desired texture, {332}〈113〉, which offsets the undesired {100}〈011〉 texture.
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