Comparative study on corrosion behavior of we33 in immersion and polarization influenced by heat treatment
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Comparative study on corrosion behavior of we33 in immersion and polarization influenced by heat treatment. / Maier, Petra; Bechly, Maximilian; Hess, Benjamin et al.
TMS 2018 147th Annual Meeting and Exhibition Supplemental Proceedings. Cham : Springer International Publishing AG, 2018. p. 227-237 (Minerals, Metals and Materials Series; Vol. Part F12).Research output: Contributions to collected editions/works › Article in conference proceedings › Research › peer-review
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TY - CHAP
T1 - Comparative study on corrosion behavior of we33 in immersion and polarization influenced by heat treatment
AU - Maier, Petra
AU - Bechly, Maximilian
AU - Hess, Benjamin
AU - Freese, Marino
AU - Hort, Norbert
N1 - Conference code: 147
PY - 2018
Y1 - 2018
N2 - 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.
AB - 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.
KW - Immersion
KW - Magnesium
KW - Morphology
KW - Voltammetry
KW - Engineering
UR - http://www.scopus.com/inward/record.url?scp=85044472503&partnerID=8YFLogxK
U2 - 10.1007/978-3-319-72526-0_21
DO - 10.1007/978-3-319-72526-0_21
M3 - Article in conference proceedings
AN - SCOPUS:85044472503
SN - 978-3-319-72525-3
SN - 978-3-319-89187-3
T3 - Minerals, Metals and Materials Series
SP - 227
EP - 237
BT - TMS 2018 147th Annual Meeting and Exhibition Supplemental Proceedings
PB - Springer International Publishing AG
CY - Cham
T2 - 147th Annual Meeting and Exhibition of the Minerals, Metals and Materials Society, TMS 2018
Y2 - 11 March 2018 through 15 March 2018
ER -