Solution heat treatment on mechanical properties and corrosion of extruded Mg5Gd compared to pure Mg
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Solution heat treatment on mechanical properties and corrosion of extruded Mg5Gd compared to pure Mg. / Maier, Petra; Bechly, Maximilian; Hort, Norbert.
Materials Science and Technology Conference and Exhibition 2017. Association for Iron and Steel Technology (AISTECH), 2017. S. 76-83 (Materials Science and Technology Conference and Exhibition 2017, MS and T 2017; Band 1).Publikation: Beiträge in Sammelwerken › Aufsätze in Konferenzbänden › Forschung › begutachtet
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TY - CHAP
T1 - Solution heat treatment on mechanical properties and corrosion of extruded Mg5Gd compared to pure Mg
AU - Maier, Petra
AU - Bechly, Maximilian
AU - Hort, Norbert
PY - 2017
Y1 - 2017
N2 - This study focuses on the influence of solution heat treatment 011 mechanical properties and corrosion by immersion of extruded Mg5Gd. The results are compared to pure Mg. Since Mg5Gd could be considered as a biodegradable magnesium alloy. Ringer solution has been chosen for corrosion tests. Hardness and tension tests reveal a loss in strength by solution heat treatment resulting from strong grain growth and dissolved second phases. The addition of the alloying element Gd improves the corrosion behavior, the amount of corrosion pits is reduced. The pure Mg extrusion bars in comparison have a higher corrosion rate and show strong pitting. The corrosion morphology is described by the pitting factor. Even there is less microgalvanic coupling because of dissolved second phases, solution heat treatment does not improve the corrosion rate of Mg5Gd by a great amount, making the strong grain growth responsible for that. However, Mg5Gd-T4 shows highest pitting corrosion resistivity.
AB - This study focuses on the influence of solution heat treatment 011 mechanical properties and corrosion by immersion of extruded Mg5Gd. The results are compared to pure Mg. Since Mg5Gd could be considered as a biodegradable magnesium alloy. Ringer solution has been chosen for corrosion tests. Hardness and tension tests reveal a loss in strength by solution heat treatment resulting from strong grain growth and dissolved second phases. The addition of the alloying element Gd improves the corrosion behavior, the amount of corrosion pits is reduced. The pure Mg extrusion bars in comparison have a higher corrosion rate and show strong pitting. The corrosion morphology is described by the pitting factor. Even there is less microgalvanic coupling because of dissolved second phases, solution heat treatment does not improve the corrosion rate of Mg5Gd by a great amount, making the strong grain growth responsible for that. However, Mg5Gd-T4 shows highest pitting corrosion resistivity.
KW - Corrosion morphology
KW - Gadolinium
KW - Immersion
KW - Magnesium
KW - Polarization
KW - Engineering
UR - http://www.scopus.com/inward/record.url?scp=85041215025&partnerID=8YFLogxK
U2 - 10.7449/2017/MST_2017_76_83
DO - 10.7449/2017/MST_2017_76_83
M3 - Article in conference proceedings
AN - SCOPUS:85041215025
T3 - Materials Science and Technology Conference and Exhibition 2017, MS and T 2017
SP - 76
EP - 83
BT - Materials Science and Technology Conference and Exhibition 2017
PB - Association for Iron and Steel Technology (AISTECH)
T2 - Materials Science and Technology Conference and Exhibition - MS & T 2017
Y2 - 8 October 2017 through 12 October 2017
ER -