| About this Abstract |
| Meeting |
Materials Science & Technology 2019
|
| Symposium
|
Metamorphic Manufacturing – Incremental Deformation Processing for Agile, High-quality Metallic Component Production
|
| Presentation Title |
Multimodal Atomic Scale Characterization of Structural and Compositional Changes During Shear Deformation of Materials |
| Author(s) |
Bharat Gwalani, Tiffany Kaspar, Yang He, Tamas Varga, Chongmin Wang, Peter Sushko, Arun Devaraj |
| On-Site Speaker (Planned) |
Bharat Gwalani |
| Abstract Scope |
A newly developed solid-phase-processing (SPP) method named shear assisted processing and extrusion (ShAPE) enables us to achieve unique texture, nanostructured-precipitates and mechanical properties while fully avoiding melt routes. High-speed atomic-relocation while shearing, with concurrent heating of the material, make the atomic-scale mechanisms in such processes quite complex. To understand this complex process and guide future modifications we are developing systematic experimental approach to decouple the effects of various factors and develop a comprehensive, fundamental atomic-scale understanding of material microstructural evolution during high shear deformation. We synthesize model materials with well controlled structural and compositional features. Then we use a tribometer to emulate bulk solid-phase-processing (SPP) conditions in small material volumes, thus enabling us to reveal shear deformations at micro-to-atomic length-scales and provide mechanistic insight into the behavior of bulk material volumes under SPP conditions. Compositional patterning in an immiscible-system below the wear track due to shear forcing is observed. |