Results 121 to 130 of about 114,632 (282)

Mitigation of Cracks in High‐Performance Nickel‐Based Superalloys in Powder Bed Fusion Laser Beam of Metals Using a Metal Matrix Composite Approach

Advanced Engineering Materials, EarlyView.
High‐performance nickel‐based superalloys are often not processible in additive manufacturing (AM) due to hot cracking. The findings in this manuscript propose an efficient method to mitigate cracking and enhance mechanical properties of these alloys by producing a metal matrix composite, contributing to the material and process perspective of the AM ...
Klaus Büßenschütt, Maël Pontoreau, Christian Haase, Johannes‐Henrich Schleifenbaum   +3 more
wiley   +1 more source

Impact of Hot Isostatic Pressing on Microstructure Evolution and Creep Performance of Powder Bed Fusion–Laser Beam Processed CM247LC

Advanced Engineering Materials, EarlyView.
The influence of Hot Isostatic Pressing (HIP) temperature on the microstructure and creep performance of powder bed fusion–laser beam processed CM247LC superalloy is investigated. Grain growth and γ’ precipitate evolution are characterized following HIP at varying temperatures.
Ahmed Fardan, Johannes Gårdstam, Eva Oscarsson, Håkan Brodin, Eduard Hryha   +4 more
wiley   +1 more source

Spectropolarimetry for Discerning Geometry and Structure in Circumstellar Media of Hot Massive Stars

Galaxies
Spectropolarimetric techniques are a mainstay of astrophysical inquiry, ranging from Solar System objects to the Cosmic Background Radiation. This review highlights applications of stellar polarimetry for massive hot stars, particularly in the context of
Richard Ignace, Kenneth G. Gayley, Roberto Casini, Paul Scowen, Christiana Erba, Jeremy Drake   +5 more
doaj   +1 more source

Recovery of TESS Stellar Rotation Periods with Deep Learning [PDF]

, 2021
Zachary R. Claytor, Jennifer L. van Saders, Joe Llama, Peter Sadowski, Brandon Quach, Ellis A. Avallone   +5 more
openalex   +1 more source

Impact of Various Rotary Friction Welding Process Parameters on the Mechanical Properties of a Steel–Aluminum Joint

Advanced Engineering Materials, EarlyView.
Rotary friction welding of steel E355 and the aluminum alloy EN AW‐6082 can lead to the formation of brittle intermetallic phases. The primary process parameters are varied in order to determine their influence on this intermetallic phase formation and the resulting mechanical properties.
Laura Huber, Phillipp Schultheiß, Michael Thiele, Christoph Rößler, Heinz Werner Höppel   +4 more
wiley   +1 more source

SDSS. IV. MaNGA: The Impact of the Acquisition of Gas with Opposite Angular Momentum on the Evolution of Galaxies

The Astronomical Journal
A gaseous counterrotating galaxy is a galaxy containing a gas component with opposite angular momentum to the main stellar disk. The counterrotating gas provides direct evidence for the accretion of external material, a key aspect in hierarchical galaxy ...
Minje Beom, René A. M. Walterbos, Dmitry Bizyaev   +2 more
doaj   +1 more source

Wavelets: a powerful tool for studying rotation, activity, and pulsation inKeplerand CoRoT stellar light curves [PDF]

, 2014
J.P. Bravo, S Roque, R. Estrela, I. C. Leão, J. R. De Medeiros, J.P. Bravo, S Roque, R. Estrela, I. C. Leão, J. R. De Medeiros   +9 more
openalex   +1 more source

Microstructural Evolution and Mechanical Properties of a Medium‐Manganese Steel Manufactured by Laser‐Based Powder Bed Fusion of Metals

Advanced Engineering Materials, EarlyView.
Fe–12Mn–0.2C medium‐manganese steel is processed by laser‐based powder bed fusion of metals using blended as well as pre‐alloyed powder. Various scanning speeds are used to determine the influence of energy deposition rate on microstructure and mechanical properties.
Leoni Hübner, Bugra Köksal, Thomas Wegener, Christian Haase, Thomas Niendorf   +4 more
wiley   +1 more source

Stellar Cruise Control: Weakened Magnetic Braking Leads to Sustained Rapid Rotation of Old Stars

The Astrophysical Journal
Despite a growing sample of precisely measured stellar rotation periods and ages, the strength of magnetic braking and the degree of departure from standard (Skumanich-like) spin-down have remained persistent questions, particularly for stars more ...
Nicholas Saunders, Jennifer L. van Saders, Alexander J. Lyttle, Travis S. Metcalfe, Tanda Li, Guy R. Davies, Oliver J. Hall, Warrick H. Ball, Richard Townsend, Orlagh Creevey, Curt Dodds   +10 more
doaj   +1 more source

Stellar magnetism: empirical trends with age and rotation [PDF]

, 2014
A. A. Vidotto, S. G. Gregory, M. Jardine, J.‐F. Donati, P. Petit, J. Morin, C. P. Folsom, J. Bouvier, A. Collier Cameron, G. A. J. Hussain, S. C. Marsden, I. A. Waite, R. Farès, S. V. Jeffers, J. D. do Nascimento   +14 more
openalex   +1 more source