纳米金属结构材料的韧化

赵永好, 毛庆忠

Toughening of Nanostructured Metals

ZHAO Yonghao, MAO Qingzhong

图12 纳米梯度不锈钢的拉伸曲线、应变硬化曲线及复杂应力状态[96]

Fig.12 Tensile engineering stress-strain (σe-εe) curves (a), strain hardening curves (b-d), and complex stress states (e, f) of nano-gradient stainless steel[96] (GS—gradient-structured, NS—nanostructured; Θ—strain hardening rate, εT—true strain, σT—true stress, H—microhardness, ΔH—H increment; inset in Fig.12b shows transient response on the σT-εT curve of the GS-CG sample between two inflection points marked by "×" corresponding to the Θ-up-turn on its Θ-εT curve)