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Precipitates effect on microstructure of as-deformed and as-annealed AZ41 magnesium alloys by adding Mn and Ca

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Abstract

The microstructure and precipitates effect of AZ41 alloys by adding Mn and Ca during hot compression (300 °C/0.1 s−1) followed by annealing (300 °C/1000 s) have been studied. A kind of bimodal structure consist of a large fraction of the original and deformed grains as well as a small fraction of newly formed grains is found in as-deformed alloys. Equiaxed and fine-grained microstructures occur in as-annealed samples. For Mn-free and Ca-free alloys, Zener pinning effect is minor. Particle stimulated nucleation promotes recrystallization. For Mn- and Ca-containing alloys, fine particles retard dislocation glide forming high density dislocation to inhibit recrystallization.

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Acknowledgements

This study was supported by the Natural Science Foundation of Shandong Province (ZR2009FL003), the S&T Developing Program of Shandong Province, China (2010GGX10301), and Science and Technology Development Project of Ministry of Education of Shandong (J10LD19).

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  1. School of Mechanical Engineering, University of Jinan, Ji’nan, 250022, China

    Shouren Wang, Ru Ma, Liying Yang, Yong Wang & Yanjun Wang

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  1. Shouren Wang
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  2. Ru Ma
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  3. Liying Yang
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  4. Yong Wang
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  5. Yanjun Wang
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Correspondence to Shouren Wang.

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Wang, S., Ma, R., Yang, L. et al. Precipitates effect on microstructure of as-deformed and as-annealed AZ41 magnesium alloys by adding Mn and Ca. J Mater Sci 46, 3060–3065 (2011). https://doi.org/10.1007/s10853-010-5184-y

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  • DOI: https://doi.org/10.1007/s10853-010-5184-y

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