Nucleation potency prediction of LaB6 with E2EM model and its influence on microstructure and tensile properties of Al-7Si-0.3Mg alloy
| Autor: | Li-jun Jing, Ye Pan, Teng-fei Gu, Jin-hong Pi, Tao Lu |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Alloy Metals and Alloys Nucleation Thermodynamics 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Geotechnical Engineering and Engineering Geology Condensed Matter Physics Microstructure 01 natural sciences Casting 0103 physical sciences Ultimate tensile strength Materials Chemistry engineering 0210 nano-technology Tem analysis |
| Zdroj: | Transactions of Nonferrous Metals Society of China. 28:1687-1694 |
| ISSN: | 1003-6326 |
| DOI: | 10.1016/s1003-6326(18)64812-5 |
| Popis: | The edge-to-edge matching (E2EM) crystallographic model was used to predict the orientation relationships (ORs) between LaB6 and Al. Three different possible ORs can be predicted between LaB6 and Al, which are ( 100 ) Al ‖ ( 100 ) LaB 6 , [ 001 ] Al ‖ [ 001 ] LaB 6 ; ( 110 ) Al ‖ ( 110 ) LaB 6 , [ 001 ] Al ‖ [ 001 ] LaB 6 ; and ( 111 ) Al ‖ ( 111 ) LaB 6 , [ 01 1 ¯ ] Al ‖ [ 01 1 ¯ ] LaB 6 . The prediction results are perfectly confirmed through TEM analysis and prove the nucleation potency of LaB6. The refining efficacy of Al-2La-1B refiner and its influence on the tensile properties were investigated in the as-cast Al-7Si-0.3Mg alloy. According to the results, LaB6 has higher nucleation potency than TiB2, leading to better grain refining efficacy of Al-2La-1B refiner in the as-cast Al-7Si-0.3Mg alloy. Regarding the mechanical performances, tensile properties of the as-cast Al-7Si-0.3Mg casting alloy are prominently improved after addition of Al-2La-1B refiner, due to the refined microstructures. |
| Databáze: | OpenAIRE |
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