OMM: Material aspects of Distortion

Size distortion in ledeburitic cold-work tool steels is always higher in longitudinal direction (the direction of main deformation, which is the direction of the elongated carbide stringers). The figure shows the effect in three different cases. 

If plates for cutting tools made from ledeburitic cold-work tool steels are taken from small bar materials in the longitudinal direction, the main direction of distortion will also be in the longitudinal direction of the plate (case I). If the same plate is taken in the transverse direction from a wide bar material, the main direction of distortion will be in the transverse direction of the plate (case II). Finally, if the plate is taken as a slice from a large-cross-section thick bar, the carbide orientation and the main direction of distortion will be in the direction of the plate thickness (case III).

For more information, click on the link below (subscription required). Then scroll to Figure 7. R Schneider; R. Mesquita; W Schützenhöfer, Distortion in Tool Steels, ASM International, 2014  https://doi.org/10.31399/asm.hb.v04d.a0005980

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