Relationship among solution heating rate, mechanical properties, microstructure and texture of Al−Mg−Si−Cu alloy
| Autor: | Xiaofeng Wang, Mingxing Guo, Linzhong Zhuang, Yonggang Wang, Wen-fei Peng |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Equiaxed crystals Materials science Metals and Alloys Recrystallization (metallurgy) 02 engineering and technology Strain hardening exponent 021001 nanoscience & nanotechnology Geotechnical Engineering and Engineering Geology Condensed Matter Physics Microstructure 01 natural sciences Grain size 0103 physical sciences Materials Chemistry Texture (crystalline) Composite material 0210 nano-technology Tensile testing Electron backscatter diffraction |
| Zdroj: | Transactions of Nonferrous Metals Society of China. 31:36-52 |
| ISSN: | 1003-6326 |
| DOI: | 10.1016/s1003-6326(20)65477-2 |
| Popis: | The relationship among heating rate, mechanical properties, microstructure and texture of Al−Mg−Si−Cu alloy during solution treatment was investigated through tensile test, scanning electron microscope, X-ray diffractometer and EBSD technology. The experimental results reveal that there is a non-monotonic relationship among solution heating rate, mechanical properties, microstructure and texture. As the solution heating rate increases, the strength variations are dependent on the tensile direction; work hardening exponent n decreases first, and then increases; plastic strain ratio r increases first, and then decreases, and finally increases. The final microstructure and texture are also affected by heating rate. As heating rate increases, the microstructure transforms from elongated grain structure to equiaxed grain structure, and the average grain size decreases first, and then increases, and decreases finally. Although the texture components including CubeND{001}〈310〉 and P{011}〈122〉 orientations almost have no change with the increase of heating rate, the texture intensity and volume fraction decrease first, and then increase, and finally decrease. Both microstructure and texture evolutions are weakly affected by heating rate. Improving heating rate is not always favorable for the development of fine equiaxed grain structure, weak texture and high average r value, which may be related to the recrystallization behavior. |
| Databáze: | OpenAIRE |
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