Twinning in copper deformed at high strain rates

Bulletin of materials science

J H Neethling¹  W D Roos²  R E Kroon²  S Cronje² 

[1] Department of Physics, Nelson Mandela Metropolitan University, Port Elizabeth, South Africa$$Department of Physics, Nelson Mandela Metropolitan University, Port Elizabeth, South AfricaDepartment of Physics, Nelson Mandela Metropolitan University, Port Elizabeth, South Africa$$;Department of Physics, University of Free State, Bloemfontein, South Africa$$Department of Physics, University of Free State, Bloemfontein, South AfricaDepartment of Physics, University of Free State, Bloemfontein, South Africa$$

关键词: Copper;    twinning;    strain rates;    grain sizes.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Copper samples having varying microstructures were deformed at high strain rates using a split-Hopkinson pressure bar. Transmission electron microscopy results show deformation twins present in samples that were both annealed and strained, whereas samples that were annealed and left unstrained, as well as samples that were unannealed and strained, are devoid of these twins. These deformation twins occurred at deformation conditions less extreme than previously predicted.

【 授权许可】

Unknown