High pressure deformation of nanostructures and lightweight alloys
Abstract/Contents
- Abstract
- Lightweight and strong alloys can reduce fuel consumption in vehicles, aircrafts and ships, and reduce spacecrafts and satellites payloads for deep space exploration. Low-density Al and Mg alloys that derive their high strength and mechanical properties from the collective interaction of defects with nanoscale precipitates are of interest for these applications. Individual nanoscale structures have also shown exceptional mechanical properties like high strength and elasticity. Nanostructuring of bulk alloys can be an effective strategy to reduce the density of the components and improve their strength. This bottom-up fabrication strategy requires a comprehensive understanding of deformation mechanisms at the nanoscale which is difficult to obtain. In situ electron microscope measurements on individual nanoparticles have shown unique deformation behaviors governed by the surface of the nanoparticles. These in situ measurements fall short in capturing the complete defect activity under stress, and suffer from limited measurement statistics and inadvertent heating of the nanoparticles. Diamond anvil cell (DAC) is a tool consisting of two diamond anvils opposing each other with the sample between them. The DAC setup applies a static high pressure on the sample through a pressure transmitting medium and allow in situ characterization of materials using optical and X-ray methods. Using this method I test and understand the deformation behavior of an ensemble of nanoparticles and nano-precipitates in bulk alloys under extreme conditions.
Description
| Type of resource | text |
|---|---|
| Form | electronic resource; remote; computer; online resource |
| Extent | 1 online resource. |
| Place | California |
| Place | [Stanford, California] |
| Publisher | [Stanford University] |
| Copyright date | 2022; ©2022 |
| Publication date | 2022; 2022 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Author | Parakh, Abhinav |
|---|---|
| Degree supervisor | Dauskardt, R. H. (Reinhold H.) |
| Degree supervisor | Gu, Wendy, (Professor of mechanical engineering) |
| Thesis advisor | Dauskardt, R. H. (Reinhold H.) |
| Thesis advisor | Gu, Wendy, (Professor of mechanical engineering) |
| Thesis advisor | Dionne, Jennifer Anne |
| Degree committee member | Dionne, Jennifer Anne |
| Associated with | Stanford University, Department of Materials Science and Engineering |
Subjects
| Genre | Theses |
|---|---|
| Genre | Text |
Bibliographic information
| Statement of responsibility | Abhinav Parakh. |
|---|---|
| Note | Submitted to the Department of Materials Science and Engineering. |
| Thesis | Thesis Ph.D. Stanford University 2022. |
| Location | https://purl.stanford.edu/ws825nz7364 |
Access conditions
- Copyright
- © 2022 by Abhinav Parakh
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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