Microstructure and texture of cold-rolled Cu-10Zn brass

Abstract

Optical, X-ray, and electron metallography have been used to examine the substructures and textures developed in 90-10 brass after rolling reductions from 18 to 96%. The substructures formed in this alloy, which has an intermediate value of stacking fault energy, have been found to be orientation dependent. In some regions the substructures are typical of the low stacking fault energy alloy 70-30 brass and consist of thin deformation twins and shear bands. In other regions the substructures are typical of pure copper, which has a higher stacking fault energy, and consist of micro bands and shear bands. In such regions twinning is not an operating deformation mode. The orientations associated with each type of behaviour have been determined. In a third type of region associated with the orientation {110}(OOI>no recognizable substructure is detected. A simple explanation of the texture transition in fcc metals and alloys is given which is fully consistent with both the textural and microstructural properties of these materials.MSj0626

Shear Band Formation in Al-2mass%Cu Single Crystals Containing ϑ Precipitates

“…The orientation dependence of the shear band formation has commonly been observed in rolled FCC single crystals such as Cu(6), Al3%Mg (8) and Cu base alloys (5). As in the present case, the shear bands usually do not occur in {011}<100>, but in {211}<111> crystals.…”

Shear band formation in IF steel during cold rolling at medium reduction levels

“…The technically important process of rolling is done over a wide range of temperatures and materials, and shear banding has been found to be ubiquitous. For example, it occurs in low carbon [1] and interstitial-free (IF) steels [2] when rolled at room temperature, and in the same materials at temperatures ranging from 300 to $1000 K [3], in austenitic stainless steels [4], in a range of single phase fcc Al and Cu alloys [5][6][7][8] and in hcp metals, such as Ti [9] and Zn [10]. It has also been reported in ordered alloys [11].…”

Texture evolution in high strain rate deformed Cu–10Zn alloy

“…The present investigation aims at examining the high strain ratetwinning-texture correlation in the low SFE Cu-10Zn alloy (g ¼35 mJ m À 2 ). This alloy is a representative of low normalized SFE value and is known to deform by twinning [13].…”