Özet:

The aim of this study is to investigate the effect of building direction on mechanical properties of the parts fabricated using Ti6Al4V alloy powders by electron beam melting method. Three specimens in three different directions (X, Y and Z) were produced and to see the effect of surface roughness on mechanical properties, one of the samples in each direction were machined by lathe. The results of tension tests on samples produced in three directions according to ASTM E8 standard revealed that yield and tensile strength of the samples built in Z direction are higher than the related properties of the samples built in X and Y directions. Yield and tensile strength of the samples built in each of the direction comes out to be higher than the same properties of the wrought or cast Ti6Al4V parts. Specimens displayed a mixed ductile-brittle fracture characteristic and the microstructure is mainly Widmanstatten / basket weave and α lamellar microstructure was observed inside the prior β grains.

Anahtar Kelimeler: