Abstract
Neutron diffraction (ND) remains an important tool for in situ analysis of material behavior during various stages of its lifespan, including fabrication, service, damage accumulation and failure. ND was also developed to study solidification of alloys, where minor phases at low solid fractions can be successfully detected, thus providing valuable information difficult to obtain using traditional characterization methods. In the present work, in situ ND solidification experiments were carried out with AZ91D Mg alloy. To this alloy, novel grain refiners were added and the phase evolution prior to the alloy’s liquidus temperature, as well throughout the freezing range was recorded. The role of the refining elements and their interaction with the solidifying alloy was investigated.
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References
D. H. StJohn, M. A. Easton, M. Qian, and J. A. Taylor, “Grain Refinement of Magnesium Alloys: A Review of Recent Research, Theoretical Developments, and Their Application,” Metall. Mater. Trans. A, vol. 44, no. 7, pp. 2935–2949, 2013.
S. K. Saha, “A Study of Grain Refinement of AZ91E and Mg-9 Wt.% Al Alloys Using Zinc Oxide,” Ryerson University, 2015.
T. J. Chen, X. D. Jiang, Y. Ma, Y. D. Li, and Y. Hao, “Grain refinement of AZ91D magnesium alloy by SiC,” J. Alloys Compd., vol. 496, no. 1–2, pp. 218–225, 2010.
E. Yano, Y. Tamura, T. Motegi, and E. Sato, “Effect of carbon powder on grain refinement of an AZ91E magnesium alloy,” Mater. Trans., vol. 44, no. 1, pp. 107–110, 2003.
T. Davis, L. Bichler, F. D’Elia, and N. Hort, “The Effect of Grain Refinement on Hot Tearing in AZ91D Magnesium Alloy,” in Magnesium Technology 2017, 2017, pp. 653–660.
A. Elsayed, D. Sediako, and C. Ravindran, “Solidification Analysis of A Magnesium-Zinc Alloy Using in-Situ Neutron Diffraction,” in Shape Casting: 6th International Symposium, 2016, pp. 167–174.
B. D. Cullity and S. R. Stock, Elements of X-ray Diffraction, Third. Upper Saddle River, NJ: Prentice Hall, 2001.
F. D’Elia, C. Ravindran, D. Sediako, and R. Donaberger, “Solidification analysis of Al–5 wt-%Cu alloy using in situ neutron diffraction,” Can. Metall. Q., vol. 54, no. 1, pp. 9–15, 2015.
A. Elsayed, D. Sediako, and C. Ravindran, “Investigation of solidification behaviour of Mg–6Al and Mg–9Al alloys using in situ neutron diffraction,” Can. Metall. Q., vol. 54, no. 1, pp. 16–23, 2015.
W. Kasprzak, D. Sediako, M. Walker, M. Sahoo, and I. Swainson, “Solidification analysis of an Al-19 Pct Si alloy using in-situ neutron diffraction,” Metall. Mater. Trans. A Phys. Metall. Mater. Sci., vol. 42, no. 7, pp. 1854–1862, 2011.
D. G. Sediako and W. Kasprzak, “In Situ Study of Microstructure Evolution in Solidification of Hypereutectic Al–Si Alloys with Application of Thermal Analysis and Neutron Diffraction,” Metall. Mater. Trans. A, vol. 46, no. 9, pp. 4160–4173, 2015.
A. Lombardi, A. Elsayed, D. Sediako, and C. Ravindran, “Analysis of the solidification characteristics of a 319 type Al alloy using in-situ neutron diffraction,” J. Alloys Compd., vol. 695, pp. 2628–2636, 2017.
A. Elsayed, “Inclusion Removal and Grain Refinement of Magnesium Alloy Castings,” Ryerson University, 2015.
J. Song, F. Pan, B. Jiang, A. Atrens, M. X. Zhang, and Y. Lu, “A review on hot tearing of magnesium alloys,” J. Magnes. Alloy., vol. 4, no. 3, pp. 151–172, 2016.
Acknowledgements
The authors would like to acknowledge the financial support of NSERC and the NSERC-Discovery grant. They would also like recognize the support from the Canadian Neutron Beam Centre in completing the neutron diffraction experiments at the Canadian Nuclear Laboratories, Chalk River, Ontario.
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Davis, T., Bichler, L., Sediako, D., Balogh, L. (2018). Solidification Analysis of Grain Refined AZ91D Magnesium Alloy via Neutron Diffraction. In: Orlov, D., Joshi, V., Solanki, K., Neelameggham, N. (eds) Magnesium Technology 2018. TMS 2018. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-72332-7_65
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DOI: https://doi.org/10.1007/978-3-319-72332-7_65
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