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Ti-6Al-4V powder characteristics in laser powder bed fusion: The effect on tensile and fatigue behavior

https://doi.org/10.1016/j.addma.2021.102584

Soltani-Tehrani, Arash ; Habibnejad-Korayem, Mahdi ; Shao, Shuai ; Haghshenas, Meysam ; Shamsaei, Nima ( March 2022 , Additive Manufacturing)

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Effects of Scanning Strategy on Residual Stress Formation in Additively Manufactured SS 17-4 PH

Masoomi, Mohammad ; Thompson, Scott M. ; Shamsaei, Nima ; Haghshenas, Meysam ( January 2017 , 28th International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference)

Parts fabricated via directed energy additive manufacturing (AM) can experience very high, localized temperature gradients during manufacture. These temperature gradients are conducive to the formation of a complex residual stress field within such parts. In the study, a thermo-mechanical model is employed for predicting the temperature distribution and residual stress in Ti-6Al-4V parts fabricated using laserpowder bed fusion (L-PBF). The result is utilized for determining a relationship between local part temperature gradients with generated residual stress. Using this numerical model, the effects of scan patterns are investigated.

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