التفاصيل البيبلوغرافية
| العنوان: |
Stress-enhanced grain growth in a nanostructured aluminium alloy during spark plasma sintering. |
| المؤلفون: |
Liu, Dongming, Wen, Haiming, Zhang, Dalong, Wang, Chuanxin, Lin, Yaojun, Xiong, Yuhong, Topping, Troy, Schoenung, Julie M., Lavernia, Enrique J. |
| المصدر: |
Philosophical Magazine Letters; Nov2014, Vol. 94 Issue 11, p741-748, 8p |
| مصطلحات موضوعية: |
ALUMINUM alloys, STRAINS & stresses (Mechanics), SINTERING, NANOSTRUCTURED materials, HIGH pressure (Science), MICROSTRUCTURE |
| مستخلص: |
In this study, we report on the influence of high pressure on the microstructure evolution of cryomilled nanostructured Al alloy powders during spark plasma sintering (SPS). Our experimental results suggest that the particular mechanism that governs grain growth during SPS depends on the magnitude of the applied pressure. In the case of material consolidated at a high pressure (e.g. 500 MPa), grain coarsening occurs via a combination of thermally activated grain boundary (GB) migration, stress-coupled GB migration and grain rotation-induced grain coalescence. In contrast, in the case of the material consolidated at a low pressure (50 MPa), grain growth occurs primarily via thermally activated GB migration. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
