Application of the Hall-Petch relation to microhardness measurement on AA 1030, Cu, CuSn7, CuZn30 and 6114 alloys
No Thumbnail Available
Date
1997
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
ın this experimental study, the strip formed specimens made from aluminum alloy 1030, pure Cu, CuSn7, CuZaSO and low carbon steel 6114 were cold worked to different ratios. To be able to determine the microhardaess values of the materials, the micmhardaess tests were applied. Grain sizes of the materials were determined by the Heyn method using metal microscope. The hardness of materials, H, is dependent on the grain diameter, d, in a similar way as in the flow stress in the Hall-Petch relation: $H=H_o+K_Hd^{-1/2}$ where $H_o$ and $K_H$ are constants. The microhardness of the materials is found to vary with the grain size according to the Hall-Petch equation with reasonable accuracy.