Influence of the Plastic Deformation Process on the Residual Stresses and Hardness of an Al-5Mg Alloy
Abstract
:1. Introduction
2. Materials and Methods
3. Procedure for Determining the Residual Stresses by the Drilling Method
3.1. Introduction within the Method Used
3.2. Working and Calculation Methods for Determination Residual Stresses
- -
- ν is Poisson’s ratio;
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- E is the longitudinal modulus of elasticity (Young);
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- θ is the angle between the direction of the desired deformation and the X axis;
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- and are calibration constants that are dimensionless and almost independent of the material.
3.3. Method of Strain Determination and Instrumentation Used
3.3.1. Drilling Equipment
3.3.2. Calculation Method of Residual Stresses
3.3.3. The Procedure for Determining the Calibration Constants and in Relation to the Data Taken from the Experiment
4. Results Obtained for the Residual Stresses on the Depth of the Plastically Deformed and Undeformed Zones
5. Microstructural Analysis of Plastically Undeformed/Deformed Area
6. Hardness Variation in Deformed and Non-Deformed Plastic Zones
7. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Element Concentration | ||||||
---|---|---|---|---|---|---|
Al [%] | Si [%] | Fe [%] | Cu [%] | Mn [%] | Mg [%] | Zn [%] |
93.85 | 0.122 | 0.629 | <0.0030 | 0.461 | 4.70 | <0.0010 |
Cr [%] | Ni [%] | Ti [%] | Be [%] | Ca [%] | Li [%] | Pb [%] |
0.113 | <0.020 | 0.0410 | <0.0001 | 0.0187 | 0.0004 | <0.001 |
Depth/D, h/D | for D0/D = 0.35 (0.37) | for D0/D = 0.35 (0.37) |
---|---|---|
0 | 0 | 0 |
0.05 | 0.037 | 0.069 |
0.1 | 0.081 | 0.159 |
0.15 | 0.115 | 0.239 |
0.2 | 0.137 | 0.299 |
0.25 | 0.147 | 0.339 |
0.3 | 0.151 | 0.364 |
0.35 | 0.151 | 0.379 |
0.4 | 0.149 | 0.387 |
Depth [mm] | h/D | ||
---|---|---|---|
0 | 0 | 0.0001 | 0.0001 |
0.2 | 0.039 | 0.022 | 0.055 |
0.4 | 0.078 | 0.046 | 0.120 |
0.6 | 0.117 | 0.068 | 0.185 |
0.8 | 0.156 | 0.086 | 0.245 |
1 | 0.195 | 0.100 | 0.294 |
1.2 | 0.234 | 0.109 | 0.330 |
1.4 | 0.273 | 0.113 | 0.354 |
1.6 | 0.312 | 0.113 | 0.368 |
1.8 | 0.351 | 0.112 | 0.376 |
2 | 0.390 | 0.111 | 0.385 |
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Samara, F.; Goanta, V.; Istrate, B.; Alkisswani, L.; Munteanu, C.; Cosau, R. Influence of the Plastic Deformation Process on the Residual Stresses and Hardness of an Al-5Mg Alloy. Materials 2024, 17, 3593. https://doi.org/10.3390/ma17143593
Samara F, Goanta V, Istrate B, Alkisswani L, Munteanu C, Cosau R. Influence of the Plastic Deformation Process on the Residual Stresses and Hardness of an Al-5Mg Alloy. Materials. 2024; 17(14):3593. https://doi.org/10.3390/ma17143593
Chicago/Turabian StyleSamara, Fayez, Viorel Goanta, Bogdan Istrate, Layth Alkisswani, Corneliu Munteanu, and Roxana Cosau. 2024. "Influence of the Plastic Deformation Process on the Residual Stresses and Hardness of an Al-5Mg Alloy" Materials 17, no. 14: 3593. https://doi.org/10.3390/ma17143593