The interaction between in situ grain refiner and ultrasonic treatment and its influence on the mechanical properties of Mg–Sm–Al magnesium alloy
| Autor: | Fuxiao Yu, Xiaoqiang Li, Shaochen Ning, Qichi Le, Xingrui Chen, Yonghui Jia |
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| Rok vydání: | 2020 |
| Předmět: |
lcsh:TN1-997
Materials science Grain refiner Intermetallics Alloy Nucleation Mechanical properties 02 engineering and technology engineering.material 01 natural sciences Biomaterials Phase (matter) 0103 physical sciences Ultimate tensile strength Composite material Magnesium alloy lcsh:Mining engineering. Metallurgy 010302 applied physics Range (particle radiation) Metals and Alloys 021001 nanoscience & nanotechnology Grain size Surfaces Coatings and Films Ceramics and Composites engineering Ultrasonic sensor Ultrasonic treatment 0210 nano-technology Grain refinement |
| Zdroj: | Journal of Materials Research and Technology, Vol 9, Iss 4, Pp 9262-9270 (2020) |
| ISSN: | 2238-7854 |
| DOI: | 10.1016/j.jmrt.2020.06.044 |
| Popis: | This work investigated the interaction between in situ grain refiner and ultrasonic treatment (UT) and its influence on the mechanical properties of Mg-Sm-Al magnesium alloy. The grain size is reduced with the increasing of Al content, which is attributed to the enhancement of heterogeneous nucleation by Al2Sm particles. The ultrasonic melt treatment also refines grains via increasing the number of nucleation sites by ultrasonic cavitation. There is a maximum grain refinement efficiency on a certain solidification circumstance. The alloy-ing method (generation the in situ grain refiner) and UT have a positive interaction, which increases the number of potential nucleation particles in melt, while the number of acti-vated nucleation particles is decided by solidification condition. The increase of Al content and UT improve both yield strength and ultimate tensile strength due to grain refinement strengthening and the second phase strengthening. The UT significantly improves the elon-gation of each alloy with an increasing range of up to 312%. The de-agglomeration of second particles and increased diversity of grain orientation respond to such improvement. (C) 2020 The Authors. Published by Elsevier B.V. |
| Databáze: | OpenAIRE |
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