Printability of alloys for additive manufacturing

Scientific Reports
T MukherjeeT DebRoy

Abstract

Although additive manufacturing (AM), or three dimensional (3D) printing, provides significant advantages over existing manufacturing techniques, metallic parts produced by AM are susceptible to distortion, lack of fusion defects and compositional changes. Here we show that the printability, or the ability of an alloy to avoid these defects, can be examined by developing and testing appropriate theories. A theoretical scaling analysis is used to test vulnerability of various alloys to thermal distortion. A theoretical kinetic model is used to examine predisposition of different alloys to AM induced compositional changes. A well-tested numerical heat transfer and fluid flow model is used to compare susceptibilities of various alloys to lack of fusion defects. These results are tested and validated with independent experimental data. The findings presented in this paper are aimed at achieving distortion free, compositionally sound and well bonded metallic parts.

References

Jul 24, 1992·Science·S A David, T Debroy
Jun 20, 2014·Scientific Reports·Douglas C HofmannJohn-Paul Borgonia
Aug 6, 2014·Nature Biotechnology·Sean V Murphy, Anthony Atala
Nov 28, 2014·Scientific Reports·Yong HeJian-zhong Fu
Nov 11, 2015·Scientific Reports·H L WeiT DebRoy

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Citations

Jan 20, 2018·Physical Review. E·Katarzyna N KowalPeter W Voorhees
Nov 23, 2019·Materials·Hossein Eskandari Sabzi, Pedro E J Rivera-Díaz-Del-Castillo
Oct 3, 2019·Physical Review. E·Katarzyna N KowalPeter W Voorhees
Oct 27, 2018·Materials·J S Zuback, T DebRoy

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