纳米孪晶金属和纳米孪晶共价材料的力学行为

温斌, 田永君

Mechanical Behaviors of Nanotwinned Metals and Nanotwinned Covalent Materials

WEN Bin, TIAN Yongjun

图13 纳米孪晶金刚石与纳米孪晶Cu不同的强化方式[48]

Fig.13 Diagram of nc-diamond and nc-Cu (nt-diamond and nt-Cu) strength as a function of grain size (twin thickness) (The black line summarizes the main feature of nc-diamond and nc-Cu where a turn from the Hall-Petch effect to reverse Hall-Petch effect (RHPE) occurs at d = dc; the brown patterned area indicates RHPE in nt-Cu with λ < λc (the Hall-Petch effect dominates with λ > λc); the cyan dash line and patterned area emphasize the continuous strengthening of nt-diamond with decreasing λ; dc—critical grain size, λc—critical twin thickness)[48]