Correlation of Stacking Fault Energy with Deformation Mechanism in Cu-(2, 20)Zn Alloys
Copper-zinc alloys with different zinc contents contain different stacking fault energies (SFE). The influence of SFE on the deformation mechanism during surface mechanical attrition treatment was studied in this work. Research results indicate that the deformation mechanism directly correlated with the SFE in Cu-Zn alloys. Deformation twinning plays a paramount role during original deformation in Cu-20Zn (19 mJ/m2). However, for Cu-2Zn alloy with low-medium SFE (38 mJ/m2), the deformation mechanism is dominated by the dislocation slipping. Microbands are the predominant microstructural features in large strain and high strain rate regions for both Cu-Zn alloys in the present study. They are likely to be formed by the splitting of the high-density dislocation walls.
H. Wei et al., "Correlation of Stacking Fault Energy with Deformation Mechanism in Cu-(2, 20)Zn Alloys," Materials Science and Technology, Taylor & Francis, Jan 2022.
The definitive version is available at https://doi.org/10.1080/02670836.2022.2025559
Materials Science and Engineering
Keywords and Phrases
Copper-zinc Alloy; Microbands; Stacking Fault Energy; Surface Mechanical Attrition Treatment; Twins
International Standard Serial Number (ISSN)
Article - Journal
© 2022 Taylor & Francis, All rights reserved.
01 Jan 2022
This work is supported by the National Natural Science Foundation of China [grant number 52071227]; Key Scientific Research Project in Shanxi Province [grant number 20181101014 and 201805D121003].