Study of Residual Stress Relaxation Mechanics Using a Micro-indent Method
The aim of this study is to show the feasibility and accuracy of a micro-indent method to comprehensively evaluate the relaxation mechanics of residual stress in specimens of rolled aluminium alloy. This micro-indent method was adapted to implement four annealing treatments. The residual displacemen...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2016 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/70470 |
| Acceso en línea: | http://hdl.handle.net/11336/70470 |
| Access Level: | acceso abierto |
| Palabra clave: | ALUMINIUM ALLOY MICRO-INDENTATION MOHR´S CIRCLE RELAXATION MECHANICS RESIDUAL STRESSES https://purl.org/becyt/ford/2.3 https://purl.org/becyt/ford/2 |
| Sumario: | The aim of this study is to show the feasibility and accuracy of a micro-indent method to comprehensively evaluate the relaxation mechanics of residual stress in specimens of rolled aluminium alloy. This micro-indent method was adapted to implement four annealing treatments. The residual displacements were measured using a high-accuracy measuring machine, which enables to decrease the absolute error down to ± 300 nm. This work presents an innovative data analysis using Mohr´s circles, which allowed to study all directions of the in-plane residual stress for different relaxation times. The results revealed that the relaxation process finishes when the residual stress relief is completed in some preferential directions, and then, a brief stress recovery phase begins. |
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