Development of a magnesium secondary alloy system for mixed magnesium post-consumer scrap
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Development of a magnesium secondary alloy system for mixed magnesium post-consumer scrap. / Fechner, Daniel; Blawert, Carsten; Hort, Norbert et al.
In: Materials Science and Engineering A, Vol. 576, 01.08.2013, p. 222-230.Research output: Journal contributions › Journal articles › Research › peer-review
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TY - JOUR
T1 - Development of a magnesium secondary alloy system for mixed magnesium post-consumer scrap
AU - Fechner, Daniel
AU - Blawert, Carsten
AU - Hort, Norbert
AU - Dieringa, Hajo
AU - Kainer, Karl Ulrich
PY - 2013/8/1
Y1 - 2013/8/1
N2 - Six alloys were prepared by high pressure die casting in order to develop a magnesium secondary alloy system for mixed post-consumer scrap. The alloys were investigated with regard to intermetallic phases, grain structures, mechanical properties and performance in the salt spray test. The results are discussed in relation to the characteristics of the high pressure die casting process. The effect of contamination by copper and compensation for this effect by the addition of zinc were thoroughly investigated for the most promising alloy. It is evident that the alloying elements strontium, silicon and calcium are incorporated in the ternary Zintl phase Sr6.33Mg16.67Si13, while aluminium, zinc, copper and magnesium form the tau-phases Mg32(Alx,Cu1−x)49 and Mg32(Al,Zn)49. The two tau-phases can merge due to isomorphism. Mg32(Al,Zn)49 ensures improved corrosion resistance after the addition of copper.
AB - Six alloys were prepared by high pressure die casting in order to develop a magnesium secondary alloy system for mixed post-consumer scrap. The alloys were investigated with regard to intermetallic phases, grain structures, mechanical properties and performance in the salt spray test. The results are discussed in relation to the characteristics of the high pressure die casting process. The effect of contamination by copper and compensation for this effect by the addition of zinc were thoroughly investigated for the most promising alloy. It is evident that the alloying elements strontium, silicon and calcium are incorporated in the ternary Zintl phase Sr6.33Mg16.67Si13, while aluminium, zinc, copper and magnesium form the tau-phases Mg32(Alx,Cu1−x)49 and Mg32(Al,Zn)49. The two tau-phases can merge due to isomorphism. Mg32(Al,Zn)49 ensures improved corrosion resistance after the addition of copper.
KW - Corrosion
KW - HPDC
KW - Intermetallics
KW - Magnesium alloys
KW - Mechanical characterization
KW - Secondary alloy
KW - Engineering
UR - http://www.scopus.com/inward/record.url?scp=84877048676&partnerID=8YFLogxK
U2 - 10.1016/j.msea.2013.03.053
DO - 10.1016/j.msea.2013.03.053
M3 - Journal articles
AN - SCOPUS:84877048676
VL - 576
SP - 222
EP - 230
JO - Materials Science and Engineering A
JF - Materials Science and Engineering A
SN - 0921-5093
ER -