Tensile stress-strain response of metallic glass matrix composites reinforced with crystalline dendrites: Role of dendrite morphology

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• 作者：Mayuresh K. Shete^a ; Tanmay Dutta^a ; I. Singh^a ; R. Narasimhan^a ; ^{narasi@mecheng.iisc.ernet.in} ; U. Ramamurty^b
• 关键词：Metallic glasses ; Microstructure ; Inhomogeneous deformation ; Brittleness and ductility ; Shear band ; Finite-element modeling
• 刊名：Intermetallics
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：83
• 期：Complete
• 页码：70-82
• 全文大小：7168 K
• 卷排序：83

文摘

Plane strain finite element simulations of tensile deformation response of bulk metallic glass composites (BMGCs) conducted. Ductility enhances with aspect ratio of high hardening dendrites. Inter-dendrite space controls post-peak stress response. Obstruction of shear bands by dendrites governs ductility. Enhanced ductility attained in a BMGC with closely spaced, high hardening, elongated dendrites aligned with loading axis.