Zobrazeno 1 - 10
of 1 891
pro vyhledávání: '"E. A. Payzant"'
Autor:
Yi Yang, Dong Han, Yanfei Gao, Wei Zhang, Jeffrey R. Bunn, E. Andrew Payzant, Jorge Penso, Zhili Feng
Publikováno v:
Volume 5: Operations, Applications, and Components; Seismic Engineering; ASME Nondestructive Evaluation, Diagnosis and Prognosis (NDPD) Division.
The 347H stainless steel is a primary high-temperature material for many energy and power generation industries. Stress relief cracking (SRC) has been a particular concern in welding of this material. The residual stress induced by welding and its ev
Autor:
J. R. Einhorn, Sean R. Agnew, Nathan Peterson, Jeffrey R. Bunn, E. A. Payzant, Chris M. Fancher
Publikováno v:
Journal of Applied Crystallography. 54:867-877
Strategies for efficient and reliable texture measurements have been explored using the Nanoscale Ordered Materials Diffractometer (NOMAD) at the Spallation Neutron Source located at Oak Ridge National Laboratory (ORNL). To test these strategies, the
Publikováno v:
Review of Scientific Instruments. 94:035101
This paper describes the hardware and software upgrades, operation, and performance of the high intensity diffractometer for residual stress analysis (HIDRA) instrument, a residual stress mapping neutron diffractometer located at the High Flux Isotop
Autor:
Donald W. Brown, Ismail C. Noyan, Michael K. Tippett, Jeffrey R. Bunn, Bjørn Clausen, E. A. Payzant
Publikováno v:
Journal of Applied Crystallography. 53:494-511
A simple statistical analysis which yields the precision, resolution, accuracy and trueness of diffraction-based lattice strain measurements is discussed. The procedure consists of measuring the thermal expansion induced in each component of an ideal
Autor:
Matthew Y. Sfeir, Sokrates T. Pantelides, Weidong Luo, Kannatassen Appavoo, E. Andrew Payzant, Bin Wang, Joyeeta Nag, Richard F. Haglund, Gerd Duscher
Publikováno v:
Physical Review B. 102
Doping is generally understood as a strategy for including additional positive or negative charge carriers in a semiconductor, thereby tuning the Fermi level and changing its electronic properties in the equilibrium limit. However, because dopants al
Autor:
E. Andrew Payzant, Timothy J. Truster, Dayakar Penumadu, Ran Ma, S.B. Puplampu, Robin Woracek, Jeffrey R. Bunn
Publikováno v:
Materials Science and Engineering: A. 700:583-591
In this paper, the degradation of mechanical properties of marine structural aluminum alloy AA5083 and onset of lattice plastic anisotropy subsequent to fire exposure is investigated. For virgin and fire-exposed samples, microstructural characterizat
Autor:
Athena S. Sefat, Claus Daniel, Lamuel David, Jianlin Li, Baishakhi Mazumder, David L. Wood, Arun Devaraj, Ashfia Huq, Debasish Mohanty, E. Andrew Payzant
Publikováno v:
Nano Energy. 36:76-84
Development of stable high-voltage (HV), high capacity (HC) cathode oxides is indispensable to enhancing the performance of current high-energy-density (HED) lithium-ion batteries. Overstoichiometric, layered Li- and Mn-rich (LMR) composite oxides ar
Publikováno v:
Journal of Applied Crystallography. 50:851-858
This study reports an angular diffraction peak shift that scales linearly with the neutron beam path length traveled through a diffracting sample. This shift was observed in the context of mapping the residual stress state of a large U–8 wt% Mo cas
Autor:
Amjad Aman, E. Andrew Payzant, Jakob Kuebler, Mykola Lugovy, R. Stadelmann, Nina Orlovskaya, Yan Chen, Ryan Jordan, Clarina Dela Cruz, Thomas Graule, Michael J. Reece
Publikováno v:
Journal of the European Ceramic Society. 37:1563-1576
Funding: This work was supported by the National Science Foundation [grant numbers: 0968911, 1030833, 0748364]. A portion of this research at ORNL's High Flux Isotope Reactor and Spallation Neutron Source, was sponsored by the Scientific User Facilit
Publikováno v:
Materials Science and Engineering: A. 688:289-300
This research is dedicated to the experimental investigation of the residual stress relaxation in girth-welded pipes due to quasi-static bending loads. Ferritic-pearlitic steel pipes are welded with two passes, resulting in a characteristic residual