نوع مقاله : مقاله کامل پژوهشی
عنوان مقاله English
نویسندگان English
The application of additive manufacturing technologies for titanium alloys is expanding in both research and industrial sectors. In this study, selective laser melting was employed to fabricate and investigate the effects of adding 1 wt.% silicon to the Ti-6Al-4V alloy. The microstructure of the fabricated selective laser melting samples consisted of fish-type melted regions normal to the build direction. Columnar β-Ti grains grew in the opposite direction of heat flow, namely along the build direction. The results indicated that the addition of 1 wt.% silicon led to grain refinement and a reduction in the width of the primary columnar β-Ti grains from approximately 70 to approximately 40 µm. This grain refinement, resulting from the presence of silicon, also contributed to an increase in the average microhardness of the alloy, such that the microhardness value increased from approximately 417 to approximately 481 HV in the build direction plane.
کلیدواژهها English