Corrosion properties of secondary AZ91 alloys
Research output: Journal contributions › Conference article in journal › Research › peer-review
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Corrosion properties of secondary AZ91 alloys. / Blawert, C.; Morales, E.; Dietzel, W. et al.
In: Magnesium Technology, Vol. 2005, 2005, p. 447-450.Research output: Journal contributions › Conference article in journal › Research › peer-review
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TY - JOUR
T1 - Corrosion properties of secondary AZ91 alloys
AU - Blawert, C.
AU - Morales, E.
AU - Dietzel, W.
AU - Hort, N.
AU - Kainer, K. U.
AU - Scharf, C.
AU - Ditze, A.
AU - Endres, F.
N1 - Conference code: 134
PY - 2005
Y1 - 2005
N2 - The corrosion properties of AZ91 alloys are determined by the amount of impurities, enriching the alloy during the recycling process. However within reasonable costs the recycling of magnesium scrap metal results only in AZ91B quality and respectively poor corrosion behavior can be expected. This influence on the corrosion resistance was studied by controlled additions of Fe, Ni, Cu, and Si to AZ91D alloy. The corrosion properties of the gravity permanent mold castings were studied by various corrosion tests and correlated to the observed microstructure and phase composition. Most of the impurities were found as, or in, intermetallic phases. The influence on the corrosion resistance was found to be depending on the solidification behavior of the particular intermetallic phase. Altogether the corrosion test results indicate a much higher tolerance against the impurities than expected. Effects on the possible use of secondary AZ91 alloys are discussed.
AB - The corrosion properties of AZ91 alloys are determined by the amount of impurities, enriching the alloy during the recycling process. However within reasonable costs the recycling of magnesium scrap metal results only in AZ91B quality and respectively poor corrosion behavior can be expected. This influence on the corrosion resistance was studied by controlled additions of Fe, Ni, Cu, and Si to AZ91D alloy. The corrosion properties of the gravity permanent mold castings were studied by various corrosion tests and correlated to the observed microstructure and phase composition. Most of the impurities were found as, or in, intermetallic phases. The influence on the corrosion resistance was found to be depending on the solidification behavior of the particular intermetallic phase. Altogether the corrosion test results indicate a much higher tolerance against the impurities than expected. Effects on the possible use of secondary AZ91 alloys are discussed.
KW - Corrosion
KW - Impurities
KW - Magnesium alloy AZ91
KW - Secondary Alloys
KW - Engineering
UR - http://www.scopus.com/inward/record.url?scp=24944515090&partnerID=8YFLogxK
M3 - Conference article in journal
AN - SCOPUS:24944515090
VL - 2005
SP - 447
EP - 450
JO - Magnesium Technology
JF - Magnesium Technology
SN - 1545-4150
T2 - 134th TMS Annual Meeting 2005
Y2 - 13 February 2005 through 17 February 2005
ER -