Effect of cryogenic temperature and change of strain path on grain refinement during rolling of Cu-30Zn brass

摘要: Abstract The effect of cryogenic temperature and change strain path on grain refinement during the rolling Cu–30Zn brass was determined. To this end, material unidirectionally rolled or cross-rolled to 90% thickness reduction at either ambient liquid-nitrogen temperatures, resulting structures crystallographic textures were determined via electron backscatter diffraction (EBSD) technique. In all cases, found be governed primarily by twinning shear banding. Lowering range provide only a minor effect. Cryogenic thus concluded impart no practical benefit with regard property improvement for material. contrast, cross shown enhance banding promote formation relatively homogeneous ultrafine-grain microstructure.