Results 21 to 30 of about 201,664 (243)

Microstructure modelling of hot deformation of Al–1%Mg alloy [PDF]

, 2009
This study presents the application of the finite elementmethod and intelligent systems techniques to the prediction of microstructural mapping for aluminium alloys. Here, the material within each finite element is defined using a hybrid model.
Abbod, Abbod, Abbod, Baxter, C.M. Sellars, Colas, D.A. Linkens, Dean, E.S. Puchi Cabrera, Furu, I.C. Howard, J. Talamantes-Silva, J.H. Beynon, Jang, M.F. Abbod, Mirza, Mirza, Puchi, Sellars, Sellars, Sellars, Shi, Zhu, Zhu, Zhu, Zhu   +25 more
core   +1 more source

Hot deformation behaviour and flow stress prediction of 7075 aluminium alloy powder compacts during compression at elevated temperatures [PDF]

, 2012
In the present study, the hot deformation behaviour of 7075 aluminium alloy powder compacts was studied by performing hot compression tests on a Gleeble 3800 machine.
Jabbari Taleghani, Mohammad Ali, Ruiz Navas, Elisa María, Salehi, M., Torralba Castelló, José Manuel   +3 more
core   +1 more source

Spark plasma sintering as an effective texturing tool for reprocessing recycled HDDR Nd-Fe-B magnets with lossless coercivity [PDF]

, 2020
The low-pressure hot-deformation methodology was applied to reprocess the nanocrystalline hydrogenation–disproportionation–desorption–recombination (HDDR) Nd-Fe-B powders from end-of-life (EOL) permanent magnets’ waste to determine the mechanism of ...
Awais, Muhammad, Ikram, Awais, Kobe, Spomenka, Pušavec, Franci, Rozman, Kristina Zuzek, Sheridan, Richard, Walton, Allan   +6 more
core   +1 more source

AAPM Task Group No. 249.B—Essentials and guidelines for clinical medical physics residency training program

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract The establishment of guidelines and curriculum standards for medical physics residency training is a critical component of setting expectations and competencies for the profession. Since the last publication of these standards, residency training has become integrated into the eligibility criteria for most medical physics certification bodies.
Jonathon A. Nye, Joseph P. Dugas, William D. Erwin, David P. Gierga, Darryl G. Kaurin, Stephanie M. Leon, Ho‐Ling Anthony Liu, Zheng Feng Lu, Alphonso W. Magri, Lynn N. Rill, Leah K. Schubert, Beth A. Schueler, Irina Vergalasova, John Vetter, Brian D. Wichman, Amy Shu‐Jung Yu, Dandan Zheng   +16 more
wiley   +1 more source

Pulse Pressure, White Matter Hyperintensities, and Cognition: Mediating Effects Across the Adult Lifespan

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives To investigate whether pulse pressure or mean arterial pressure mediates the relationship between age and white matter hyperintensity load and to examine the mediating effect of white matter hyperintensities on cognition. Methods Demographic information, blood pressure, current medication lists, and Montreal Cognitive Assessment ...
Jade Hannan, Sarah Newman‐Norlund, Natalie Busby, Sarah C. Wilson, Roger Newman‐Norlund, Chris Rorden, Julius Fridriksson, Leonardo Bonilha, Nicholas Riccardi   +8 more
wiley   +1 more source

Numerical Studies of Influencing Factors on the Homogeneity of the Powder Mixture during the Powder Spreading Process of Powder Bed Fusion–Laser Beam/Metal

Advanced Engineering Materials, EarlyView.
AISI 304L stainless steel powder is mixed with silicon nitride (Si3N4) powder and processed by PBF‐LB/M, allowing partial retention of Si3N4. The numerical approach effectively predicts the Si3N4 powder homogeneity and N content distribution on the powder bed. Recent studies have focused on the alloying of nitrogen (N) in high‐alloy stainless steels by
Yuanbin Deng, Ziping Sang, Jiali Zhang, Felix Radtke, Louis Becker, Simone Herzog, Sebastian Weber, Christoph Broeckmann   +7 more
wiley   +1 more source

Porous mandrels provide uniform deformation in hydrostatic powder metallurgy [PDF]

, 1967
Porous copper mandrels prevent uneven deformation of beryllium machining blanks. The beryllium powder is arranged around these mandrels and hot isostatically pressed to form the blanks.
Gripshover, P. J., Hanes, H. D.
core   +1 more source

Influence of heating parameters on flow stress curves of low-alloy Mn-Ti-B steel [PDF]

, 2018
Influence of the initial grain size on hot deformation behavior of the low-alloy Mn-Ti-B steel was investigated. The uniaxial compression tests were performed in range of the deformation temperatures of 900-1200 degrees C and strain rates of 0.1-10 s(-1).
Kawulok, Petr, Kawulok, Rostislav, Opěla, Petr, Schindler, Ivo, Sedláček, René   +4 more
core   +1 more source

A Case‐Based Reasoning Approach to Model Manufacturing Constraints for Impact Extrusion

Advanced Engineering Materials, EarlyView.
A hybrid modeling approach is presented that combines constraint‐based process modeling and case‐based reasoning. The model formalizes manufacturing constraints and integrates simulation data to model complex manufacturing processes. The approach supports manufacturability analysis during product design through an adaptive modeling environment.
Kevin Herrmann, Eduard Ortlieb, Hendrik Wester, Paul Christoph Gembarski, Bernd‐Arno Behrens, Roland Lachmayer   +5 more
wiley   +1 more source

Electron-lattice kinetics of metals heated by ultrashort laser pulses [PDF]

, 1999
We propose a kinetic model of transient nonequilibrium phenomena in metals exposed to ultrashort laser pulses when heated electrons affect the lattice through direct electron-phonon interaction.
A. G. Krivenko, A. G. Krivenko, D. M. Riffe, E. G. Mishchenko, E. G. Mishchenko, E. M. Lifshitz, H. Elsayed-Ali, I. G. Fugimoto, J. P. Girardeau-Montaut, L. A. Falkovsky, L. A. Falkovsky, L. A. Falkovsky, M. B. Agranat, M. B. Agranat, M. B. Agranat, M. I. Kaganov, P. Rentzepis, R. Yen, S. I. Anisimov, S. I. Anisimov, S. I. Anisimov, V. A. Benderskii, V. M. Kontorovich   +22 more
core   +2 more sources