Abstract Molecular dynamics simulations are employed to study indentation/scratching tests on the mechanical properties of Cu64Zr36/Cu amorphous/crystalline nanolaminates. The formation of narrow shear bands is the major cause of plastic deformation in the single indentation. In cyclic indentation, the deformation behavior has no significant difference with the various number of cycles. The cyclic load and hardness increase as rising the cyclic number. The hysteresis loop appears and is wider with increasing loading/reloading steps. In the scratching test, the shear deformation process occurs in the shear plane. The forces increase rapidly in the first stage; then the normal forces increase gradually, the tangential forces fluctuate horizontally. The friction coefficient increases higher with the increasing cutting depth; its value oscillates from 1.0 to 1.21.

中文翻译：

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非晶Cu64Zr36/结晶Cu纳米层压板的纳米摩擦学特性和应变硬化

摘要 采用分子动力学模拟研究了Cu64Zr36/Cu非晶/结晶纳米层压材料力学性能的压痕/划痕试验。窄剪切带的形成是单压痕塑性变形的主要原因。在循环压痕中，变形行为随着循环次数的不同没有显着差异。循环载荷和硬度随着循环次数的增加而增加。滞后回线出现并且随着加载/重新加载步骤的增加而变宽。在划痕试验中，剪切变形过程发生在剪切平面内。第一阶段力量迅速增加；然后法向力逐渐增加，切向力水平波动。摩擦系数随着切削深度的增加而增大；