Paper Title:
Deformation Characteristics in AlphaType Brass Worked by Torsion
  Abstract

In present work, bar samples of pure copper and Cu-Zn alpha single phase alloys setting 20mm in diameter and 150mm in length processed by torsion in the rotation speed to 1rpm every 60° twist angles. Then, deformed samples were researched microstructure and their characteristics. Microstructures of non-deformation samples were isometric, however, deformed samples streaky. Elements of bar drawn 10×10mm mesh were developed parallelogram. It was trend angle of between stretchable direction in microstructures and torsion axis increased more torsion angles. It was coincident with between the angle and deformed direction of microstructures. Shear strain was calculated by twist angle by theoretical formula. Their value corresponded rough with measurement from mesh variation. Pure copper and Cu-Zn alpha phase alloys were similar deformation microstructure, but fracture twist angle in copper was more than Cu-Zn alloys, and it was trend fracture angle had decreased as concentration of Zn increased. This trend was difference of fracture elongation obtained in tensile test.

  Info
Periodical
Materials Science Forum (Volumes 654-656)
Main Theme
Edited by
Jian-Feng Nie and Allan Morton
Pages
1251-1254
DOI
10.4028/www.scientific.net/MSF.654-656.1251
Citation
M. Shinsen, M. Furui, S. Ikeno, T. Nagae, "Deformation Characteristics in AlphaType Brass Worked by Torsion", Materials Science Forum, Vols. 654-656, pp. 1251-1254, 2010
Online since
June 2010
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Price
$32.00
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