Publication result detail

Influence of aluminium content on corrosion behavior of AZ type magnesium alloy

HORYNOVÁ, M.; DOLEŽAL, P.; ZAPLETAL, J.; GEJDOŠ, P.; PODRÁBSKÝ, T.

Original Title

Influence of aluminium content on corrosion behavior of AZ type magnesium alloy

English Title

Influence of aluminium content on corrosion behavior of AZ type magnesium alloy

Type

Paper in proceedings (conference paper)

Original Abstract

Influence of aluminium content on corrosion behavior of AZ type magnesium alloys was evaluated. Set of samples of magnesium alloys AZ31 (3% Al) and two sets of AZ61 (6% Al) had been exposed to spray of 5% solution of sodium chloride for up to 42 days. In order to observe influence of intermetallic phase on the mechanism of corrosion, one set of AZ61 alloy samples was heat treated prior to corrosion exposure. Optimal conditions for complete dissolution of intermetallic phase were chosen based on heat treatment optimization. Interface between intermetallic phase and solid solution or secondary Al-Mn particles and solid solution served as initiation point for galvanic corrosion. In contrary, comparison of corrosion rate and corrosion mechanism of AZ61 alloy in initial state and after heat treatment showed, that presence of intermetallic phase and Al rich solid solution can act as barrier and slow down corrosion process.

English abstract

Influence of aluminium content on corrosion behavior of AZ type magnesium alloys was evaluated. Set of samples of magnesium alloys AZ31 (3% Al) and two sets of AZ61 (6% Al) had been exposed to spray of 5% solution of sodium chloride for up to 42 days. In order to observe influence of intermetallic phase on the mechanism of corrosion, one set of AZ61 alloy samples was heat treated prior to corrosion exposure. Optimal conditions for complete dissolution of intermetallic phase were chosen based on heat treatment optimization. Interface between intermetallic phase and solid solution or secondary Al-Mn particles and solid solution served as initiation point for galvanic corrosion. In contrary, comparison of corrosion rate and corrosion mechanism of AZ61 alloy in initial state and after heat treatment showed, that presence of intermetallic phase and Al rich solid solution can act as barrier and slow down corrosion process.

Keywords

Magnesium alloys, microstructure, corrosion, heat treatment

Key words in English

Magnesium alloys, microstructure, corrosion, heat treatment

Authors

HORYNOVÁ, M.; DOLEŽAL, P.; ZAPLETAL, J.; GEJDOŠ, P.; PODRÁBSKÝ, T.

RIV year

2016

Released

28.05.2015

ISBN

978-80-214-5146-9

Book

MULTI-SCALE DESIGN OF ADVANCEDMATERIALS-CONFERENCE PROCEEDINGS

Pages from

42

Pages to

47

Pages count

6

BibTex

@inproceedings{BUT115071,
  author="Miroslava {Horynová} and Pavel {Doležal} and Josef {Zapletal} and Pavel {Gejdoš} and Tomáš {Podrábský}",
  title="Influence of aluminium content on corrosion behavior of AZ type magnesium alloy",
  booktitle="MULTI-SCALE DESIGN OF ADVANCEDMATERIALS-CONFERENCE PROCEEDINGS",
  year="2015",
  pages="42--47",
  isbn="978-80-214-5146-9"
}