Microstructure-Property Optimization in Metallic Glasses

✍ Scribed by Baran Sarac (auth.)

• Publisher: Springer International Publishing
• Year: 2015
• Tongue: English
• Leaves: 100
• Series: Springer Theses
• Edition: 1
• Category: Library

✦ Synopsis

This thesis consists of an in-depth study of investigating microstructure-property relationships in bulk metallic glasses using a novel quantitative approach by which influence of the second phase features on mechanical properties can be independently and systematically analyzed. The author evaluates and optimizes the elastic and plastic deformation, as well as the overall toughness of cellular honeycombs under in-plane compression and porous heterostructures under uniaxial tension. The study reveals three major deformation zones in cellular metallic glass structures, where deformation changes from collective buckling showing non-linear elasticity to localized failure exhibiting a brittle-like deformation, and finally to global sudden failure with negligible plasticity as the length to thickness ratio of the ligaments increases. The author found that spacing and size of the pores, the pore configuration within the matrix, and the overall width of the sample determines the extent of deformation, where the optimized values are attained for pore diameter to spacing ratio of one with AB type pore stacking.

✦ Table of Contents

Front Matter....Pages i-xiii
General Introduction....Pages 1-16
Fabrication Methods of Artificial Microstructures....Pages 17-28
Structural Characterization of Metallic Glasses....Pages 29-36
Artificial Microstructure Approach....Pages 37-80
General Conclusions and Outlook....Pages 81-88
Back Matter....Pages 89-89

✦ Subjects

Metallic Materials; Nanotechnology and Microengineering; Nanoscale Science and Technology