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Mit dem Laserstrahl additiv hergestellte Ti‐6Al‐4 V‐Legierung: Anodisierung und dessen Auswirkungen auf die mechanischen Eigenschaften und die Korrosionsbeständigkeit
Author(s) -
Chandramohan P.,
Raghu R.,
Pradeesh Kumar D.
Publication year - 2020
Publication title -
materialwissenschaft und werkstofftechnik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.285
H-Index - 38
eISSN - 1521-4052
pISSN - 0933-5137
DOI - 10.1002/mawe.201900257
Subject(s) - anodizing , materials science , corrosion , ultimate tensile strength , metallurgy , composite material , microstructure , ductility (earth science) , alloy , tensile testing , scanning electron microscope , aluminium , creep
Ti‐6Al‐4 V components were developed in different orientations (horizontal and vertical) using an additive manufacturing technique called direct metal laser sintering process and heat treated under 3 different procedures (heat treatment‐1, heat treatment‐2 and heat treatment‐3). Anodizing was done at different voltages (8 V–12 V and 18 V–22 V) in the as‐sintered and heat treated conditions. Corrosion test was carried out in artificial saliva. Mechanical properties like tensile strength, elongation were tested; microstructure was analyzed using scanning electron microscopy and chemistry of corrosion products were analyzed using energy dispersive x‐ray spectroscopy. The results of corrosion tests have been correlated with the measured tensile strength and ductility. The same is also correlated with the dry sliding wear results published from our earlier research. Anodized (8 V–12 V) horizontal built‐heat treatment‐3 specimen and anodized (18 V–22 V) horizontal built‐heat treatment‐2 outperforms other combinations in terms of corrosion. Nevertheless, considering the outcome of mechanical testing, the specimen built in horizontal orientation and anodized at 18 V–22 V is preferred for biomedical applications that needs the combination of both mechanical property and corrosion resistance.