Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Brian Welk"'
Publikováno v:
Metallurgical and Materials Transactions A. 52:5367-5380
This paper addresses the use of alloying additions to titanium alloys for additive manufacturing (AM) with the specific objective of producing equiaxed microstructures. The additions are among those that increase freezing ranges such that significant
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1bb2b40683c82dee3f8d4b6ec18ca149
https://doi.org/10.1007/s11661-021-06475-3
https://doi.org/10.1007/s11661-021-06475-3
Autor:
Hamish L. Fraser, Andrew H. Baker, Brian J. Hayes, Peter C. Collins, Thomas K. Ales, D. Gary Harlow, Iman Ghamarian, Matthew J. Kenney, Brian Welk, Wenqi Li
Publikováno v:
MATEC Web of Conferences, Vol 321, p 11083 (2020)
Additively manufactured materials are gaining wide attention owing to the manufacturing benefits as it results in near net shape components. It is well known that the manufacturing processes affects the performance of the components via microstructur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f7030f85aa736d7b6e939ba406d70ea6
https://www.matec-conferences.org/articles/matecconf/pdf/2020/17/matecconf_ti2019_11083.pdf
https://www.matec-conferences.org/articles/matecconf/pdf/2020/17/matecconf_ti2019_11083.pdf
Publikováno v:
Ultramicroscopy. 228:113346
Novel imaging strategies in the scanning electron microscope aimed at significantly improved image contrast of second phases in metal alloys are described. These include the use of low accelerating voltages, small working distances, and a novel detec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9474914e5af9f570a98dc2d0319894a4
https://doi.org/10.1016/j.ultramic.2021.113346
https://doi.org/10.1016/j.ultramic.2021.113346
Autor:
Brian Welk, Thomas K. Ales, Peter C. Collins, D. Gary Harlow, Christina V. Haden, David A. Brice, Iman Ghamarian, Andrew H. Baker, Samuel J. Kuhr, Brian W. Martin, Brian J. Hayes, Hamish L. Fraser
Publikováno v:
Acta Materialia. 133:120-133
Advanced manufacturing approaches, including additive manufacturing (i.e., “3D printing”) of metallic structures requires a change to qualification strategies. One approach, informed qualification, integrates modeling strategies to make predictio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aee76f8cff4b4a5e7106342e88ca71c1
https://doi.org/10.1016/j.actamat.2017.05.025
https://doi.org/10.1016/j.actamat.2017.05.025
Autor:
J.K. Jensen, J.M. Sosa, Robert E.A. Williams, Brian Welk, D.E. Huber, Gopal B. Viswanathan, Hamish L. Fraser, Oleg N. Senkov
Publikováno v:
Scripta Materialia. 121:1-4
Electron microscopy, X-ray energy dispersive spectroscopy, and tomographic reconstructions were used to characterize a high entropy alloy predominantly composed of refractory elements. The intragranular microstructure was found to consist of a period
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::067f0df7f7939f77f74abc541b48807c
https://doi.org/10.1016/j.scriptamat.2016.04.017
https://doi.org/10.1016/j.scriptamat.2016.04.017
Publikováno v:
Materials Science and Engineering: A. 660:172-180
A constituent-based phenomenological equation to predict yield strength values from quantified measurements of the microstructure and composition of β processed Ti-6Al-4V alloy was developed via the integration of artificial neural networks and gene
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aed7d5276dce43c059d85f36487e095a
https://doi.org/10.1016/j.msea.2016.02.052
https://doi.org/10.1016/j.msea.2016.02.052
Publikováno v:
JOM. 68:1021-1026
In this work, compositionally graded specimens were deposited using the laser engineered net-shaping (LENS™) additive manufacturing technique to study the glass-forming ability of two bulk metallic glass (BMG) and high entropy alloy (HEA) composite
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4ec29b07ef59eca3cb55001e4c075066
https://doi.org/10.1007/s11837-015-1779-8
https://doi.org/10.1007/s11837-015-1779-8
Autor:
Brian Welk, Stephen R. Niezgoda, Donald W. Brown, Ellen K. Cerreta, J.S. Okasinski, Thaddeus Song En Low
Publikováno v:
Acta Materialia. 91:101-111
Under high pressure conditions, Zr undergoes a phase transformation from its ambient equilibrium hexagonal close packed α phase to hexagonal ω phase. Upon returning to ambient conditions, the material displays hysteretic behavior, retaining a signi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7267fac25a69b0a730afdaa6a0e33502
https://doi.org/10.1016/j.actamat.2015.03.031
https://doi.org/10.1016/j.actamat.2015.03.031
Publikováno v:
Metallurgical and Materials Transactions B. 45:547-554
The present work explores the use of the LENS™ (laser engineered net shaping) powder deposition technique in combination with laser surface melting to evaluate the formation–properties–production of bulk metallic glass-forming systems. A model
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1bab8b59a8bff73e65e1d9029d4b9afc
https://doi.org/10.1007/s11663-013-9907-8
https://doi.org/10.1007/s11663-013-9907-8
Publikováno v:
Materials Science and Engineering: A. 575:152-159
Six titanium aluminide alloys, based on the Ti–Al–Fe system, in the composition space defining the limits of the three-phase (γ+α 2 +β/B2) field have been prepared. The effects of heat treatment temperature (1000 °C and 1200 °C) and cooling
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e683969088564cf5cd844ad177b3ece7
https://doi.org/10.1016/j.msea.2013.03.058
https://doi.org/10.1016/j.msea.2013.03.058