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Effect of constraint on the rolled microstructure of (001)[100] oriented single crystal in an Fe-19%Cr ferritic alloy

Journal Article · · Scripta Metallurgica et Materialia; (United States)

When a polycrystalline material is deformed, each grain must satisfy the continuity of stress and strain at grain boundaries during deformation. It is called constraint'' by grain boundaries. It has been thought that the constraint affects the deformation behavior of grains, such as crystal rotation and deformed microstructure. However, the details of the effect, particularly the initial orientation dependence, have not been clarified sufficiently. It is well known that in the (001)[100] single crystals in Fe-Si alloys or in iron the matrix bands'' are formed by rolling. The matrix bands are composed of the banded regions which are rotated toward (001) < 110 > orientation either clockwise or counterclockwise. However, the matrix bands in (001)[100] crystals have not been reported in polycrystalline materials. Although there have been many investigations on the matrix bands in the (001)[100] single crystals, no information as to how the constraint affects the rolled microstructure of the crystals is available. The purpose of the present study is to clarify the effect of the constraint on the rolled microstructure of the (001)[100] oriented single crystal in an Fe-19%Cr ferritic alloy.

OSTI ID:
6209858
Journal Information:
Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 29:4; ISSN SCRMEX; ISSN 0956-716X
Country of Publication:
United States
Language:
English