Details

Autor(en) / Beteiligte

• Reddy, Uttam
• Dubey, Dhananjay
• Panda, Subha Sanket
• Ireddy, Nikhila
• Jain, Jayant
• Mondal, Kallol
• Singh, Sudhanshu S.

Titel

Effect of Surface Roughness Induced by Milling Operation on the Corrosion Behavior of Magnesium Alloys

Ist Teil von

• Journal of materials engineering and performance, 2021-10, Vol.30 (10), p.7354-7364

Ort / Verlag

New York: Springer US

Erscheinungsjahr

2021

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• In this work, the effect of surface roughness, induced by milling operation, on the corrosion properties of the as-cast AZ31 and the as-cast AZ80 magnesium alloys has been studied. The surface roughness was measured with varying feed rate (21, 200 and 320 mm/min) and cutting speed (100, 640 and 1330 rpm) at a constant depth of cut for both the alloys. The variation in the surface roughness has been correlated with the hardness, ductility and volume fraction of the Mg 17 Al 12 precipitates in both the alloys. The corrosion behavior has been evaluated by conducting immersion test in a freely aerated 3.5 wt.% NaCl solution. The corrosion rates have been observed to be directly related to the surface roughness. The higher corrosion resistance of the machined AZ80 alloy as compared to the AZ31 alloy has been ascribed to the combined effect of the lower surface roughness and the partial dissolution of Mg 17 Al 12 eutectic precipitates in the AZ80 alloy due to the increase in the temperature during milling, which was calculated analytically.