Dynamic Atomic Mechanisms of Plasticity of Ni Nanowires and Nano Crystalline Ultra-Thin Films

Abstract:

Using our recently developed in situ transmission electron microscopy techniques, we revealed that the FCC structured Ni nanowires with diameter of about 30 nm possess ultra-large strain plasticity. Dynamic complex dislocation activities mediated the large strain bent-plasticity and they were monitored at atomic scale in real time. The bent-induced strain gradient allows studying the strain effects on dislocation mediated plasticity. We also explored the deformation techniques to more general cases, the nano thin films. An example of tensile Pt ultra-thin film is presented.

• Periodical: Materials Science Forum (Volumes 654-656)
• Pages: 2293-2296
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.654-656.2293
• Online since: June 2010
• Authors: Xiao Dong Han, Li Hua Wang, Pan Liu, Yong Hai Yue, Ming Jie Yang, Jia Lin Sun, Ze Zhang
• Keywords: Dislocation, Dynamic Atomic Mechanism, Mechanical Property, Nanowire, Ultra-Thin Nano Film

References

[1] XiaoDong Han, YueFei Zhang and Ze Zhang, Chinese Patent: 200610057989. 5 (2009) and 200610144031. x (2009).

[2] YueFei Zhang, XiaoDong Han, Kun Zheng, XiaoNa Zhang, and Ze Zhang, Adv. Funct. Mater., Vol. 17(2007), pp.3435-3440.

[3] XiaoDong Han, YueFei Zhang, Kun Zheng, XiaoNa Zhang, and Ze Zhang, Nano Letters, Vol. 7(2007), p.452.

[4] Kun Zheng, Xiaodong Han, Lihua Wang, Yuefei Zhang, Yonghai Yue, Yan Qin, Xiaona Zhang and Ze Zhang, Nano Letters, Vol. 9(2009), p.2471.

[5] XiaoDong Han, Kun Zheng, YueFei Zhang, XiaoNa Zhang, and Ze Zhang, Adv. Mater, Vol. 19(2007), pp.2112-2118.

[6] Lihua Wang et al, to be published.

[7] Lihua Wang et al, to be published.