Deformation behavior of Cu-composites processed by HPT

6th International Conference on Nanomaterials by Severe Plastic Deformation

材料科学;化学

Krämer, L.^1 ; Wurster, S.^2 ; Pippan, R.^1

Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, Austria^1

Department of Materials Physics, University of Leoben, Austria^2

关键词: Applied strain;    Chemical compositions;    Deformation behavior;    High pressure torsions;    Nanocrystalline microstructures;    Second phase;    Single-phase materials;    Two-phase materials;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/63/1/012026/pdf
DOI  :  10.1088/1757-899X/63/1/012026

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Deformation behavior of two phase materials with High-Pressure Torsion (HPT) was investigated on the basis of Cu-composites. As second phases Fe, W and yttria were used. The deformation behavior in the HPT-process differs due to their different mechanical properties and the ratio of Cu and the second phase. A large benefit of deforming two-phase materials is the homogenous nanocrystalline microstructure with smaller achievable grain sizes than in single phase materials subjected to HPT. Attention is given to development of hardness as a function of the applied strain, the chemical composition at different radii and the obtained microstructure. Tensile tests provide additional information about strength.