Wallner lines in a nanocrystalline Ni-23 % Fe alloy

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• 作者：Fengchun Jiang ; Kenneth S. Vecchio
• 关键词：Wallner lines ; Stress wave ; Nanocrystalline Ni&ndash ; 23 % Fe alloy ; High strain rate
• 刊名：Scripta Materialia
• 出版年：2012
• 出版时间：December, 2012
• 年：2012
• 卷：67
• 期：11
• 页码：907-910
• 全文大小：460 K

文摘

Wallner lines and their variants were observed for the first time in a nanocrystalline Ni-23 % Fe alloy. The physical nature of the Wallner lines and their variants were analyzed by investigating the mechanical response, deformation and fracture mechanism of the nanocrystalline Ni-23 % Fe alloy. It was concluded that the Wallner lines and periodic fracture markings were results of the strong external stress wave effect combined with a specific degree of plastic deformation and crack microbranching.