Abstract
Nd, a rare earth element with low solid solubility in Mg, is an ideal alloying element to improve elevated temperature yield strength and creep resistance cost effectively. The addition of Zn leads to further improvement in the elevated temperature properties; therefore, Mg–Nd–Zn alloys are prospective materials for structural and medical applications . In situ synchrotron radiation diffraction was performed during compression at 200 and 350 ℃ for Mg3NdxZn (x = 0, 0.5, 1, 2 wt%) alloys up to a deformation of 0.3 with a deformation rate of 10−3 s−1. The compressed samples were subsequently subjected to electron backscattered diffraction. The results show that at 200 ℃ the addition of Zn increased the ductility . At the beginning of plastic deformation twinning was the dominant deformation mechanism complemented by sub-grain formation at a later stage. At 350 ℃, the compression strength was increased with the addition of Zn and the microstructure of the samples underwent partial dynamic recrystallization during compression.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
M. Pekguleryuz, K. Kainer, A. Kaya, Fundamentals of magnesium alloy metallurgy, first ed. Woodhead, Philadelphia, 2013.
M.M. Avedesian, H. Baker, Magnesium and magnesium alloys, ASM Speciality Handbook, ASM International, United States of America, 1999.
M.H. Yoo et al.: “Nonbasal deformation modes of metals and alloys: Role of dislocation source and mobility” Metall. Mater. Trans. A 41 (2002) 813–822.
H. Hermawan, D. Dubé, D. Mantovani, “Developments in metallic biodegradable stents” Acta Biomaterialia 6 (2010) 1693–1697.
S.M. He et al.: Comparison of the microstructure and mechanical properties of a ZK60 alloy with and without 1.3 wt.% gadolinium addition” Mater. Sci. Eng. A, 433 (2006) 175–181.
C. Ma et al.: “Tensile properties of extruded ZK60–RE alloys” Mater. Sci. Eng. A. 349 (2003) 207–212.
H.T. Zhou et al.: “Effect of Nd and Y on the microstructure and mechanical properties of ZK60 alloy” Mater. Sci. Eng. A, 445–446 (2007) 1–6.
N. Stanford et al.: “Effect of microalloying with rare-earth elements on the texture of extruded magnesium-based alloys” Scripta. Mater. 59 (2008) 772–775.
L.L. Rokhlin, Magnesium Alloys Containing Rare Earth Metals Taylor & Francis: London, UK, 2003.
P.H. Fu et al.: “Effects of heat treatments on the microstructures and mechanical properties of Mg–3Nd–0.2Zn–0.4Zr (wt.%) alloy” Mat. Sci. Eng. A 486. (2008) 183–192.
D. Wu, R.S. Chen, W. Ke: “Microstructure and mechanical properties of a sand-cast Mg–Nd–Zn alloy”. Mater. Des.58. (2014) 324–331.
J. Zhang et al.: “The degradation and transport mechanism of a Mg-Nd-Zn-Zr stent in rabbit common carotid artery: A 20-month study” Acta Biomater. 69 (2018) 372–384.
I. Lonardelli et al.: “In situ observation of texture evolution during α → β and β → α phase transformations in titanium alloys investigated by neutron diffraction” Acta Mater. 55. (2007) 5718–5727.
K.-D. Liss and K. Yan: Thermo-mechanical processing in a synchrotron beam, Mater. Sci. Eng. A, 528, (2010) 11–27.
R.H. Buzolin et al.: In situ synchrotron radiation diffraction study of the role of Gd, Nd on the elevated temperature compression behavior of ZK40 Mat. Sci. Eng. A, 640, (2015) 129–136.
R.H. Buzolin et al.: In situ synchrotron radiation diffraction investigation of the compression behaviour at 350 °C of ZK40 alloys with addition of CaO and Y Mat. Sci. Eng. A, 664, (2016) 2–9.
F.R. Elsayed et al., Magnesium permanent mold Castings optimization Materials Science Forum 690 (2011) 65–68.
D. Tolnai et al.: Study of the solidification of AS alloys combining in situ synchrotron diffraction and differential scanning calorimetry Mater Sci Forum, 765, (2013) 286–290.
E. Meza-García et al.: “Influence of alloying elements and extrusion process parameter on the recrystallization process of Mg-Zn alloys” Materials Today: Proceedings 2S (2015) 19 –25.
S. Gavras et al.: “The Role of Zn Additions on the Microstructure and Mechanical Properties of Mg–Nd–Zn Alloys” Inter Metalcast. (2017) 1.
Acknowledgements
The authors acknowledge the Deutsches Elektronen-Synchrotron for the provision of facilities within the framework of the proposal I-20170459 EC. K. M. is grateful for support of the Czech Science Foundation Grant number 14-36566G. K. H. acknowledges the support of the Operational Programme Research, Development and Education, The Ministry of Education, Youth and Sports (OP RDE, MEYS) [CZ.02.1.01/0.0/0.0/16_013/0001794]. K. M. and K. H. are grateful for the Financial support of the Czech Science Foundation under the contract 18-07140S.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2019 The Minerals, Metals & Materials Society
About this paper
Cite this paper
Tolnai, D. et al. (2019). Thermo-mechanical Processing of EZK Alloys in a Synchrotron Radiation Beam. In: Joshi, V., Jordon, J., Orlov, D., Neelameggham, N. (eds) Magnesium Technology 2019. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-05789-3_44
Download citation
DOI: https://doi.org/10.1007/978-3-030-05789-3_44
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-05788-6
Online ISBN: 978-3-030-05789-3
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)