Influence of grain boundary modifier on the strength size-dependence displayed by complex-shaped nanocrystalline nickel pillars

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• 作者：Brandon B. Seo^a ; Junhua Gu^a ; Zeinab Jahed^b ; Ting Y. Tsui^a ; ^b ; ^c ; ^{tttsui@uwaterloo.ca}
• 关键词：Nanoindentation ; Nanocrystalline ; Size effect ; Nickel ; Strength
• 刊名：Thin Solid Films
• 出版年：2017
• 出版时间：1 January 2017
• 年：2017
• 卷：621
• 期：Complete
• 页码：178-183
• 全文大小：866 K
• 卷排序：621

文摘

Complex shaped nc-Ni pillars with ~ 520 nm diameters were successfully fabricated. Hollow, C-, and x-shaped pillars with sidewalls as thin as ~ 109 nm were tested. Mechanical strengths of two grain size groups (9 nm and 14 nm) were characterized. Size-dependent softening observed in 9 nm grain size complex-shaped pillars. No softening observed in 14 nm grain size complex-shaped pillars.