Abstract
An extruded WE33 alloy is focus of this study. The influence of heat treatment on hardness and corrosion behavior is evaluated in immersion and polarization tests. Due to the application as a biodegradable implant, Ringer solution of 37 °C was chosen. As-extruded WE33 shows heterogeneous grain size distribution. Solution heat treatment (T4) causes significant grain growth with high variation in grain size with reduced hardness. Precipitation hardening (T6) causes reduced average grain size, mainly based on developing additional small grains. Hardness of T6 condition exceeds extruded material. The corrosion morphology is mostly described by the pitting factor. Corrosion behavior by corrosion rate (weight and cross-sectional area loss) and pitting factor of immersion are compared to polarization and shows the same trend: T6-condition shows lowest corrosion rate. On the other hand, T6-condition shows highest pitting corrosion tendency. Pitting factors evaluated in immersion tests are much higher than seen after polarization tests.
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
Zheng YF, Gu XN, Witte F (2014) Mat Sci Eng R 77:1
Choudhary L, Singh Raman RK, Hofstetter J, Uggowitzer PJ (2014) Mater Sci Eng C 42:629–636
Magnesium Elektron UK, data sheet 467
Tolnai D, Mendis CL, Stark A, Szakács G, Wiese B, Kainer KU, Hort N (2013) Mater Lett 102–103:62
Smola B, Stulı́ková I, von Buch F, Mordike BL (2002) Mat Sci Eng A 324:113
Rokhlin LL, Dobatkina TV, Nikitina NI, Tarytina IE (2011) Met Sci Heat Treat 52:588
Kang YH, Wu D, Chen RS, Han EH (2014) J Magnes Alloys 2:109
Maier P, Gentsch L, Hort N (2017) Magnes Technol 2017:429–437
Maier P, Peters R, Mendis CL, Müller S, Hort N (2016) JOM 68(4):1183–1190
Maier P, Gonzalez J, Peters R, Feyerabend F, Ebel T, Hort N (2016) Eur Cells Mater 32(6):22
Kree V, Bohlen J, Letzig D, Kainer KU (2004) Pract Metallogr 41(5):233–246
Rokhlin LL (2003) Magnesium alloys containing rare earth metals. Taylor & Francis, London, UK
Acknowledgements
This work is supported by Helmholtz Virtual Institute VH-VI-523. The material was extruded by the Extrusion Research and Development Center TU Berlin, the authors thank Sören Müller and Felix Gensch. The authors acknowledge the support Hartmut Habeck (UASS) for the voltammetry measurements.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2018 The Minerals, Metals & Materials Society
About this paper
Cite this paper
Maier, P., Bechly, M., Hess, B., Freese, M., Hort, N. (2018). Comparative Study on Corrosion Behavior of WE33 in Immersion and Polarization Influenced by Heat Treatment. In: & Materials Society, T. (eds) TMS 2018 147th Annual Meeting & Exhibition Supplemental Proceedings. TMS 2018. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-72526-0_21
Download citation
DOI: https://doi.org/10.1007/978-3-319-72526-0_21
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-72525-3
Online ISBN: 978-3-319-72526-0
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)