Grain coarsening behavior in a nanocrystalline copper subjected to sliding friction

作者：Zhang Y S; Niu H Z; Zhang L C; Bai X F; Zhang X M; Zhang P X^*

来源：Materials Letters, 2014, 123: 261-264.

DOI：10.1016/j.matlet.2014.02.050

• Nanocrystalline materials
• Crystal growth
• Surfaces

A grain coarsening behavior was reported in this work in nanocrystalline copper during sliding friction. The cross-sectional microstructure and micro-hardness of the pure copper subjected to sliding friction were investigated in detail. A nano-grained surface layer of copper was obtained after sliding against a WC-Co ball for the first 100 cycles. However, a pronounced grain coarsening was observed during the subsequent sliding cycles. Such a behavior is dominated by high stress, high strain as well as large amplitude adopted in sliding friction.

• 出版日期2014-5-15
• 单位西北有色金属研究院