Different effects of multiscale microstructure on fatigue crack growth path and rate in selective laser melted Ti6Al4V

During the selective laser melting (SLM) process of Ti6Al4V, a special structure can be formed with columnar prior β grains along the building direction and fully martensitic α′ within the β grain. To investigate the influence of such special structure on the fatigue crack growth (FCG) rate, Ti6Al4V...

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Veröffentlicht in:	Fatigue & fracture of engineering materials & structures 2022-09, Vol.45 (9), p.2457-2467
Hauptverfasser:	Qi, Zhao, Wang, Bin, Zhang, Peng, Liu, Riu, Zhang, Zhenjun, Zhang, Zhefeng
Format:	Artikel
Sprache:	eng
Schlagworte:	Columnar structure Crack propagation fatigue crack growth rate Fatigue failure Fracture mechanics Grains Heat treating Heat treatment Laser beam melting Martensite microstructure Morphology Room temperature selective laser melting strength Ti6Al4V Titanium base alloys
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