Weitere Kapitel dieses Buchs durch Wischen aufrufen
Magnesium alloys were produced with extrusion, screw rolling (SR) and multi-directional forging (MDF) processes. Various temperatures were used for SR and MDF. The tensile test was carried out to measure the mechanical properties and immersion test in 3.5 wt% NaCl saturated with Mg(OH)2 was run to measure the corrosion rate. It was found that the grain size increased gradually with increasing the MDF or SR temperature. The increase in the MDF or SR temperature resulted in decrease in yield strength due to increase in grain size. However, the corrosion rate decreased after MDF and SR. Furthermore, the increase in MDF or SR temperature resulted in more reduction in the corrosion rate due to reduction of galvanic cells by dissolution of the intermetallic phases into the matrix.
Bitte loggen Sie sich ein, um Zugang zu diesem Inhalt zu erhalten
Sie möchten Zugang zu diesem Inhalt erhalten? Dann informieren Sie sich jetzt über unsere Produkte:
D. Song, A.B. Ma, J.H. Jiang, P.H. Lin, D.H. Yang, J.F. Fan, Corrosion behaviour of bulk ultra-fine grained AZ91D magnesium alloy fabricated by equal-channel angular pressing, Corrosion Science 53(1) (2011) 362–373.
A. Nikfahm, Effect of grain size changes on corrosion behavior of copper produced by accumulative rol bonding process, Mater Res 16 (2013) 1379–1386.
G.B. Hamu, D. Eliezer, L. Wagner, The relation between severe plastic deformation microstructure and corrosion behavior of AZ31 magnesium alloy, Journal of Alloys and Compounds 468(1–2) (2009) 222–229.
S.M. Fatemi-Varzaneh, A. Zarei-Hanzaki, Processing of AZ31 magnesium alloy by a new noble severe plastic deformation method, Materials Science and Engineering A 528(3) (2011) 1334–1339.
M. Diez, H.-E. Kim, V. Serebryany, S. Dobatkin, Y. Estrin, Improving the mechanical properties of pure magnesium by three-roll planetary milling, Materials Science and Engineering A 612 (2014) 287–292.
H. Miura, W. Nakamura, M. Kobayashi, Room-temperature Multi-directional Forging of AZ80 Mg Alloy to Induce Ultrafine Grained Structure and Specific Mechanical Properties, Procedia Engineering 81 (2014) 534–539.
- Effects of Severe Plastic Deformation on Mechanical Properties and Corrosion Behavior of Magnesium Alloys
Kwang Seon Shin
in-adhesives, MKVS, Hellmich GmbH/© Hellmich GmbH, Zühlke/© Zühlke, Neuer Inhalt/© momius | stock.adobe.com