The effect of ultrasonic impact treatment on the deformation behavior of commercially pure titanium under uniaxial tension

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• 作者：A.V. Panin^a ; ^b ; ^{pav@ispms.tsc.ru} ; M.S. Kazachenok^a ; A.I. Kozelskaya^a ; R.R. Balokhonov^a ; V.A. Romanova^a ; O.B. Perevalova^a ; Yu I. Pochivalov^a
• 关键词：Titanium ; Ultrasonic surface treatment ; Gradient microstructure ; Mechanical behavior ; Shear bands
• 刊名：Materials & Design
• 出版年：2017
• 出版时间：5 March 2017
• 年：2017
• 卷：117
• 期：Complete
• 页码：371-381
• 全文大小：2855 K
• 卷排序：117

文摘

Ultrasonic impact treatment produces a gradient nano-to-micron-grained structure in the surface layer of CP titanium. Dislocation glide, twinning and shear banding mechanisms are at work at different depths below the surface under tension. Shear bands in hardened surface layer develop alternatively in conjugate directions of maximum tangential stresses. Shear band evolution and self-organization are analyzed using the energy balance approach.