Publication: Texture and mechanical properties of EUROFER 97 steel processed by ECAP
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2011-07
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Elsevier
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Abstract
The EUROFER 97 steel was processed by equal channel angular pressing (ECAP) at 550° degrees C for four passes via route C. The starting material consisted of ferrite-martensite dual phase composed by small subgrains of about 0.5 μ m and low angle boundaries less than 5° degrees. The volume fraction of second phase particles was around 10 vol.%, besides a texture formed by several fibers orientations belonging to the zone axes , and . Increasing ECAP deformation, this microstructure became into equiaxed grain structures of less than 1 μ m, and the misorientation between contiguous grains increased. This refinement of the microstructure was accompanied by the development of a new texture described by a family of fiber orientations related by rotations around axes and . Tensile tests have revealed that an ECAP treatment at 550° degrees C for two passes could significantly strengthen the tempered material still maintaining good ductility.
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RAFM steels, EUROFER 97, ECAP processing, Texture, Microtexture, Mechanical properties
Bibliographic citation
Materials Science and Engineering A 528 (2011) 5927–5934