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  Effect of Cooling Path on Precipitation Behavior, Microstructure, and Texture Evolution of Micro-alloyed Magnesium Alloy

Liu, Y., Su, J., Gao, R., Geng, H., Javaid, A., Skszek, T., et al. (2020). Effect of Cooling Path on Precipitation Behavior, Microstructure, and Texture Evolution of Micro-alloyed Magnesium Alloy. Journal of Materials Engineering and Performance, 29(6), 3560-3567. doi:10.1007/s11665-020-04718-9.

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Liu, Yang1, Author
Su, Jing2, Author           
Gao, Rui1, Author
Geng, Huiwen1, Author
Javaid, Amjad3, Author
Skszek, Tim4, Author
Yue, Stephen5, Author           
1Department of Mining and Materials Engineering, McGill University, 3610 Rue University, Montreal, H3A 0C5, Canada, ou_persistent22              
2High-Entropy Alloys, Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_3010672              
3CanmetMATERIALS, 183 Longwood Road South, Hamilton, L8P 0A5, Canada, ou_persistent22              
4Magna International, 750 Tower Drive, Troy, 48098-3000, USA, ou_persistent22              
5Department of Mining and Materials Engineering, McGill University, 3610 University Street, Montreal, QC, H3A 0C5, Canada, ou_persistent22              


Free keywords: Alloying elements; Cooling; Dynamic recrystallization; Hot rolling; Microalloying; Neodymium alloys; Precipitation (chemical); Rare earths; Solid solutions; Ternary alloys; Textures; Zinc alloys, Cooling path; Dynamic and static recrystallization; micro-alloyed; Post-deformation annealing; Precipitation behavior; Texture evolutions; Texture modification; Thermodynamic simulations, Magnesium alloys
 Abstract: Alloying with rare-earth (RE) elements enhances the formability of magnesium (Mg) alloys, especially for the lower elevated temperatures. The beneficial effect brought by RE addition is related to texture modification. However, the complexity of the precipitation behavior in RE-containing alloy and the often excessive RE additions has impeded the understanding of the mechanism for RE texture modification. The current study is based on three micro-alloyed Mg-1Zn-xNd (wt.) alloys with reduced levels of Nd, i.e., x = 0.1, 0.2, and 0.5 wt.. Two different cooling paths were employed after solutionizing to achieve different precipitation conditions. The alloys were then subjected to hot rolling at 450 °C to a total reduction of 45 in two passes, and post-deformation annealing was also conducted. The precipitation behavior of the current alloy was discussed based on experimental observations and thermodynamic simulations. It was found that “dilute” Nd in solid solution is more effective in suppressing both dynamic and static recrystallization compared to Nd in the form of precipitates. Ultimately, a non-basal texture with basal poles splitting toward rolling direction and transverse direction was obtained for the Mg-1Zn-0.5Nd alloy after annealing. The mechanism of texture weakening effect was attributed to the presence of Nd in solid solution. © 2020, Her Majesty the Queen in Right of Canada, as represented by the Minister of Natural Resources.


Language(s): eng - English
 Dates: 2020-03-16
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1007/s11665-020-04718-9
 Degree: -



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Title: Journal of Materials Engineering and Performance
  Abbreviation : J. Mater. Eng. Perform.
Source Genre: Journal
Publ. Info: United States : Springer New York
Pages: - Volume / Issue: 29 (6) Sequence Number: - Start / End Page: 3560 - 3567 Identifier: ISSN: 10599495, 15441024
CoNE: https://pure.mpg.de/cone/journals/resource/10599495, 15441024