Quasi-in-situ study on {10-12} twinning-detwinning behavior of rolled Mg-Li alloy in two-step compression (RD)-compression (ND) process
| Autor: | Yujie Cui, Chenying Shi, Jingjing Hu, Akihiko Chiba, Siyu Zhang, Yunping Li, Biaobiao Yang, Jianwei Teng |
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| Rok vydání: | 2022 |
| Předmět: |
010302 applied physics
Materials science Alloy Two step Metals and Alloys 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Compression (physics) 01 natural sciences Stress (mechanics) Mechanics of Materials 0103 physical sciences engineering Texture (crystalline) Composite material 0210 nano-technology Crystal twinning In situ study Electron backscatter diffraction |
| Zdroj: | Journal of Magnesium and Alloys. 10:2775-2787 |
| ISSN: | 2213-9567 |
| Popis: | Twinning-detwinning (TDT) behavior in a strongly basal-textured Mg-Li alloy during two-step compression (RD)-compression (ND) process was investigated using quasi-in-situ EBSD. TDT behavior and TDT variants selection were statistically discussed with the loading path for the first time. Non-Schmid twinning behavior was observed in the first step compression, owing to the local stress fluctuations by neighboring twins; in contrast, Schmid's law well predicted the detwinning variants selection. This asymmetrical TDT behavior was first investigated to date related with the strong basal texture and loading path. Besides, with the progress of compression, Schmid factors for twinning demonstrated a decreasing tendency; however, those for detwinning during the second step displayed an abnormally increasing trend, fundamentally stemming from prior twinning behavior. |
| Databáze: | OpenAIRE |
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