Strain-Ageing of Low-Alloyed Multiphase High-Strength Steels
Abstract
:1. Introduction
2. Materials and Experimental Procedure
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- in the head of the tested samples of the as-received material, labeled AR-K;
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- in the uniformly deformed part of the tested as-received material, labeled AR-L;
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- in the head of the specimen 0% prestrain followed by bake-hardening at 170 C for 20 min, labeled BH-K;
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- in the uniformly deformed part of the tested 0% prestrain followed by bake-hardening at 170 C for 20 min specimen, labeled BH-K;
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- in the head of the specimen 2% prestrain followed by bake-hardening at 170 C for 20 min, labeled BH-K; and
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- in the uniformly deformed part of the tested 2% prestrain followed by bake-hardening at 170 C for 20 min specimen, labeled BH-L.
3. Results
3.1. Influence of the Prestrain
3.2. Influence of the Bake-Hardening Temperature
3.3. Influence of the Bake-Hardening Time
3.4. Retained Austenite Stability
3.5. Internal Friction Measurement
3.6. Transmission Electron Microscopy
3.7. Discussion
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Steel | C | Si | Mn | P | Al |
---|---|---|---|---|---|
TRIP1 | 0.195 | 1.582 | 1.64 | 0.011 | 0.032 |
TRIP2 | 0.212 | 1.527 | 1.778 | 0.009 | 0.038 |
TRIP3 | 0.180 | 0.700 | 1.61 | 0.012 | 1.450 |
TRIP4 | 0.220 | 0.040 | 1.66 | 0.012 | 1.490 |
TRIP5 | 0.221 | 0.09 | 1.68 | 0.012 | 1.485 |
Steel | V, % | C , wt% |
---|---|---|
TRIP5, before aging | 11.5 | 1.81 |
TRIP5, after aging | 12.1 | 1.84 |
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Samek, L.; Dykas, J.; De Moor, E.; Grajcar, A. Strain-Ageing of Low-Alloyed Multiphase High-Strength Steels. Metals 2020, 10, 439. https://doi.org/10.3390/met10040439
Samek L, Dykas J, De Moor E, Grajcar A. Strain-Ageing of Low-Alloyed Multiphase High-Strength Steels. Metals. 2020; 10(4):439. https://doi.org/10.3390/met10040439
Chicago/Turabian StyleSamek, Ludovic, Jakub Dykas, Emmanuel De Moor, and Adam Grajcar. 2020. "Strain-Ageing of Low-Alloyed Multiphase High-Strength Steels" Metals 10, no. 4: 439. https://doi.org/10.3390/met10040439