【摘要】 主要总结了纳米金属块材的力学性能的最新研究进展,包括弹性和滞弹性、强度和硬度、拉伸和压缩塑性力学性能、断裂韧度、蠕变和超塑性、疲劳和磨损性能,与粗晶多晶材料进行了比较;探讨了影响纳米金属力学行为的本征和非本征因素;并简要分析了纳米晶金属的形变机制。更多还原

【Abstract】 Mechanical properties of bulk nanocrystalline metals are summarized and compared with those of coarse-crystalline metals in terms of elastic and anelastic hardness, strength, tensile and compressive plasticity ,fracture toughness,creep,superplasticity,fatigue,wear,etc. The intrinsic and extrinsic factors which affect the mechanical behaviour are analyzed. Deformation mechanisms in bulk nanocrystalline metals are also discussed.更多还原