Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Tien T. Roehling"'
Autor:
Nicholas P. Calta, Vivek Thampy, Duncan R.C. Lee, Aiden A. Martin, Rishi Ganeriwala, Jenny Wang, Philip J. Depond, Tien T. Roehling, Anthony Y. Fong, Andrew M. Kiss, Christopher J. Tassone, Kevin H. Stone, Johanna Nelson Weker, Michael F. Toney, Anthony W. Van Buuren, Manyalibo J. Matthews
Publikováno v:
Materials & Design, Vol 195, Iss , Pp 108987- (2020)
Metal parts produced by laser powder bed fusion (LPBF) additive manufacturing exhibit characteristic microstructures comparable to those observed in laser welding. The primary cause of this characteristic microstructure is rapid, localized heating an
Externí odkaz:
https://doaj.org/article/af173b59e682414fb815d812dbad6ae9
Autor:
Tien T. Roehling, Rongpei Shi, Saad A. Khairallah, John D. Roehling, Gabe M. Guss, Joseph T. McKeown, Manyalibo J. Matthews
Publikováno v:
Materials & Design, Vol 195, Iss , Pp 109071- (2020)
Gaussian laser intensity profiles are standard in laser-based metal additive manufacturing, although recent work in single-layer melt tracks showed that beam shaping could offer a feasible route towards microstructural control. Since thermal cycling
Externí odkaz:
https://doaj.org/article/13d9316954214e5dba14aa20eb1fe376
Autor:
Debra L. Rosas, Saad A. Khairallah, Jean-Luc Fattebert, Joel Berry, Aurélien Perron, John A. Turner, Tien T. Roehling, Bey Vrancken, Joseph T. McKeown, Manyalibo J. Matthews, John D. Roehling
Publikováno v:
Materials Today. 51:65-86
Much of the latent promise of metal additive manufacturing (AM) rests in the potential for controlled creation of spatially tailored microstructures, designed to optimize key build-scale properties through systematic variation across a build. Compone
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f5ed8a936f1f8ddff970cbd69a331be1
https://doi.org/10.1016/j.mattod.2021.09.024
https://doi.org/10.1016/j.mattod.2021.09.024
Autor:
Joseph T. McKeown, Manyalibo J. Matthews, Rongpei Shi, Tae Wook Heo, Saad A. Khairallah, Tien T. Roehling
Publikováno v:
Acta Materialia. 184:284-305
Additive manufacturing (AM) promises to revolutionize manufacturing by producing complex parts with tailored mechanical properties through local microstructure control. The main challenge is to control or prevent columnar (elongated) growth morpholog
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::37f1475ba05d78557402f8d64903d285
https://doi.org/10.1016/j.actamat.2019.11.053
https://doi.org/10.1016/j.actamat.2019.11.053
Autor:
Rongpei Shi, Thejaswi U. Tumkur, Bey Vrancken, John D. Roehling, Joseph T. McKeown, Manyalibo J. Matthews, William L. Smith, R.K. Ganeriwala, Tien T. Roehling, Gabriel M. Guss, Saad A. Khairallah
Publikováno v:
Procedia CIRP. 94:200-204
Laser powder bed fusion has proven to be an effective additive manufacturing technology for the manufacture of complex metal components. However, the local thermal history associated with Gaussian beam, raster scan processes produces heterogeneous an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::060c13c083f1243b6182064ec12007ff
https://doi.org/10.1016/j.procir.2020.09.038
https://doi.org/10.1016/j.procir.2020.09.038
Autor:
Michael F. Crumb, Thomas Voisin, Saad A. Khairallah, Tien T. Roehling, Manyalibo J. Matthews, Thejaswi U. Tumkur, John D. Roehling, Rongpei Shi, Sheldon Wu, Philip J. Depond, Gabe Guss
Publikováno v:
Science Advances. 7
High thermal gradients and complex melt pool instabilities involved in powder bed fusion–based metal additive manufacturing using focused Gaussian-shaped beams often lead to high porosity, poor morphological quality, and degraded mechanical perform
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::71da855a93f3a99ee8fabbcd30019dfd
https://doi.org/10.1126/sciadv.abg9358
https://doi.org/10.1126/sciadv.abg9358
Autor:
Tien T. Roehling, Bey Vrancken, William L. Smith, Michael R. Hill, Joseph T. McKeown, Gabriel M. Guss, Manyalibo J. Matthews, John D. Roehling
Publikováno v:
Additive Manufacturing. 28:228-235
High residual stresses are typical in additively manufactured metals and can reach levels as high as the yield strength, leading to distortions and even cracks. Here, an in situ method for controlling residual stress during laser powder bed fusion ad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f547dca9f7f8b73f92467dfa3d322864
https://doi.org/10.1016/j.addma.2019.05.009
https://doi.org/10.1016/j.addma.2019.05.009
Autor:
Tien T. Roehling, Michael F. Toney, R.K. Ganeriwala, Aiden A. Martin, Philip J. Depond, Johanna Nelson Weker, Nicholas P. Calta, Kevin H. Stone, Jenny Wang, Andrew M. Kiss, Anthony van Buuren, Manyalibo J. Matthews, Anthony Y. Fong, Vivek Thampy, Christopher J. Tassone, Duncan R.C. Lee
Publikováno v:
Materials & Design, Vol 195, Iss, Pp 108987-(2020)
Metal parts produced by laser powder bed fusion (LPBF) additive manufacturing exhibit characteristic microstructures comparable to those observed in laser welding. The primary cause of this characteristic microstructure is rapid, localized heating an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f461431e3c1a1278e4e6871a3f5d8cc9
http://www.sciencedirect.com/science/article/pii/S0264127520305219
http://www.sciencedirect.com/science/article/pii/S0264127520305219
Autor:
Gabriel M. Guss, Michael F. Crumb, Saad A. Khairallah, Joseph T. McKeown, Manyalibo J. Matthews, John D. Roehling, S.Q. Wu, Tien T. Roehling
Publikováno v:
Procedia CIRP. 74:607-610
Metal powder-bed fusion additive manufacturing (AM), while demonstrating great potential across a diverse application space, still lacks the necessary control to obtain parts that meet strict performance-driven criteria. In this work, we explore spat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f30e1f1b54e60536beef01d945250069
https://doi.org/10.1016/j.procir.2018.08.077
https://doi.org/10.1016/j.procir.2018.08.077
Autor:
Manyalibo J. Matthews, Thomas Voisin, Tien T. Roehling, Yin Zhang, Y. Morris Wang, Alex V. Hamza, Wen Chen, Zhi Zeng, Joseph T. McKeown, Melissa K. Santala, Philip J. Depond, Nicholas P. Calta, Ting Zhu, Zan Li, Ryan T. Ott, Jianchao Ye
Publikováno v:
Nature Materials. 17:63-71
Many traditional approaches for strengthening steels typically come at the expense of useful ductility, a dilemma known as strength-ductility trade-off. New metallurgical processing might offer the possibility of overcoming this. Here we report that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2baf6f748ed62eafb76e8881eab04d95
https://doi.org/10.1038/nmat5021
https://doi.org/10.1038/nmat5021