Aging Process during Creep Deformation in an Al-Mg-Si Alloy Affected by Pre-Aging Condition
| Autor: | Akio Niikura, Goroh Itoh, Yoshikazu Suzuki, Makoto Ando |
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| Rok vydání: | 2014 |
| Předmět: |
Materials science
Precipitation (chemistry) Mechanical Engineering Metallurgy Alloy chemistry.chemical_element Atmospheric temperature range engineering.material Condensed Matter Physics Precipitation hardening Creep chemistry Mechanics of Materials Creep rate Aluminium engineering General Materials Science Thermal stability |
| Zdroj: | Materials Science Forum. :261-266 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.794-796.261 |
| Popis: | Creep behavior of an Al-0.3%Mg-0.5%Si alloy affected by pre-aging condition was investigated to obtain fundamental knowledge on the thermal stability in the service temperature range for the precipitation-hardened aluminum heat-exchanger. The alloy was aged at 175 °C for 3 h (under-aged) and 24 h (peak-aged), after solution treatment, and then subjected to creep testing at temperatures of 150 °C and 200 °C. When the creep temperature was 150 °C, the under-aged (UA) specimen showed a lower creep rate than that of the peak-aged (PA) specimen. On the other hand, when the creep temperature was 200°C, both specimens showed almost the same creep rate. In other words, the UA specimen had higher creep resistance than the PA specimen at 150 °C, whereas this advantage disappeared at 200 °C. The difference was thought to originate from the precipitation during creep testing. |
| Databáze: | OpenAIRE |
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