Zobrazeno 1 - 10
of 55
pro vyhledávání: '"Paul R. Gradl"'
Publikováno v:
Journal of Materials Research and Technology, Vol 32, Iss , Pp 1683-1695 (2024)
In this study, the tensile behaviors of laser powder bed fused (L-PBF) and laser powder directed energy deposited (LP-DED) HAYNES® 214 were investigated at a wide range of test temperatures (−195, 25, 425, 650, 870 and 980 °C). Specimens fabricat
Externí odkaz:
https://doaj.org/article/3e070f7f6dc64847b221c3efa37cec52
Autor:
Uttam Bhandari, Yehong Chen, Huan Ding, Congyuan Zeng, Selami Emanet, Paul R. Gradl, Shengmin Guo
Publikováno v:
Journal of Manufacturing and Materials Processing, Vol 7, Iss 5, p 160 (2023)
Thermal conductivity (TC) is greatly influenced by the working temperature, microstructures, thermal processing (heat treatment) history and the composition of alloys. Due to computational costs and lengthy experimental procedures, obtaining the ther
Externí odkaz:
https://doaj.org/article/c0071c40f2664f0aa7120dc0ee08324d
Autor:
Paul R. Gradl
Publikováno v:
Measurement: Sensors, Vol 24, Iss , Pp 100453- (2022)
Optical measurement techniques have evolved since the mid-2000's due to the advancement in computer processing and digital camera sensors. These techniques allow for the digitization of full three-dimensional (3D) surfaces and provide time-domain sur
Externí odkaz:
https://doaj.org/article/17f52ed26fd945b1b6ef5b55a89fedc8
Publikováno v:
Materials Research Letters, Vol 9, Iss 7, Pp 308-314 (2021)
This study reports the superior tensile properties of laser powder bed fused (L-PBF) Hastelloy X compared to wrought, exhibiting enhanced yield strength and improved ductility. By analyzing the tensile response of a variety of microstructures ranging
Externí odkaz:
https://doaj.org/article/10a22aaca94a423bb38848d0eea5d199
Publikováno v:
Advances in Industrial and Manufacturing Engineering, Vol 4, Iss , Pp 100084- (2022)
Additive Manufacturing (AM) offers new design and manufacturing opportunities of thin-wall microchannel heat exchangers for aerospace and industrial applications. Laser Powder Directed Energy Deposition (LP-DED) is an AM process providing large scale
Externí odkaz:
https://doaj.org/article/7b4e7d727bfd4742be1826d8e47c6477
Autor:
Ariel Gamon, Edel Arrieta, Paul R. Gradl, Colton Katsarelis, Lawrence E. Murr, Ryan B. Wicker, Francisco Medina
Publikováno v:
Results in Materials, Vol 12, Iss , Pp 100239- (2021)
Experimental examples of as-built microstructures and associated microindentation hardnesses (HV) for a wide range of metal additive manufacturing (AM) processes for Inconel 625 alloy are presented in this research paper. These processes included col
Externí odkaz:
https://doaj.org/article/bc246a7e1be445118c5817eef1db9d4f
Autor:
Victoria Luna, Leslie Trujillo, Ariel Gamon, Edel Arrieta, Lawrence E. Murr, Ryan B. Wicker, Colton Katsarelis, Paul R. Gradl, Francisco Medina
Publikováno v:
Journal of Manufacturing and Materials Processing, Vol 6, Iss 5, p 107 (2022)
This study examines and compares the microstructures, Vickers microindentation hardness, and mechanical properties for additively manufactured (AM) samples built by a variety of AM processes: wire arc AM (WAAM), electron beam powder bed fusion (EB-PB
Externí odkaz:
https://doaj.org/article/d0cfd69fd9854005a53bba992baedb0f
Autor:
Timothy M. Smith, Christopher A. Kantzos, Nikolai A. Zarkevich, Bryan J. Harder, Milan Heczko, Paul R. Gradl, Aaron C. Thompson, Michael J. Mills, Timothy P. Gabb, John W. Lawson
Publikováno v:
Nature. 617:513-518
Multiprincipal-element alloys are an enabling class of materials owing to their impressive mechanical and oxidation-resistant properties, especially in extreme environments1,2. Here we develop a new oxide-dispersion-strengthened NiCoCr-based alloy us
Publikováno v:
Metal Additive Manufacturing for Propulsion Applications. :775-824
Autor:
Thomas W. Teasley, Tessa M. Fedotowsky, Paul R. Gradl, Benjamin L. Austin, Stephen D. Heister
Publikováno v:
AIAA SCITECH 2023 Forum.