Evolution of surface roughness of a cast Al-Si-Cu piston alloy during thermal exposure
| Autor: | Hai-ying Li, Tong Bao, Jiaqi Zheng, Jian-ping Li, Lei Liu, Yong-chun Guo, Yang Wei, Jian-li Wang, Zhong Yang, Bo-yan Li |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Scanning electron microscope 020209 energy Alloy technology industry and agriculture Metals and Alloys General Engineering 02 engineering and technology Surface finish engineering.material equipment and supplies 021001 nanoscience & nanotechnology Microstructure law.invention Piston law Phase (matter) Thermal 0202 electrical engineering electronic engineering information engineering engineering Surface roughness Composite material 0210 nano-technology |
| Zdroj: | Journal of Central South University. 27:1645-1653 |
| ISSN: | 2227-5223 2095-2899 |
| DOI: | 10.1007/s11771-020-4396-9 |
| Popis: | In the present work, samples of Al-Si-Cu piston alloy after T6 heat treatment were exposed for 2 h at temperatures ranging from 400 to 550 °C. The evolution of surface roughness and microstructure of the alloy during thermal exposure was studied by combination methods of roughness profiles, optical and scanning electron microscopy as well as XRD analysis. It is found that the roughness and mass of the alloy increase with the raise of the thermal exposure temperature, and the increasing rates of them are slow as the exposure temperature is below 500 °C, but accelerates abruptly when the temperature is higher than 500 °C. The variation of surface roughness of the alloy is closely related to phase transformation and oxidation during the thermal exposure. |
| Databáze: | OpenAIRE |
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