Results 91 to 100 of about 463,274 (346)

Combining Metal Additive Manufacturing and Casting Technology: High Performance Cooling Channels for Electric Powertrain Components

Advanced Engineering Materials, EarlyView.
When realized as inserts in high‐pressure die casting, aluminum cooling channels for electric powertrain components and similar applications typically require a stabilizing filler to survive the process. The present study investigates relinquishing this filler using additively manufactured inserts promising performance improvements.
Dirk Lehmhus, Gefei Li, Martin Czekalla, Leonardo Fernandes Gomes, Christoph Pille, Hermann Pleteit, Adrian Struss, Keno Toussaint, Andre Irretier, Münip Dalgic   +9 more
wiley   +1 more source

CALPHAD‐Guided Prediction and Interpretation of Phase Formation in Ta–Mo–Cr–Ti–Al Refractory High‐Entropy Alloys

Advanced Engineering Materials, EarlyView.
This study designs Ta–Mo–Cr–Ti–Al refractory high‐entropy alloys with a disordered body‐centered‐cubic A2 crystal structure aiming for improved ductility, lower density, and oxidation resistance. Four alloy compositions are identified by thermodynamic calculations.
Kateryna Khanchych, Chongchong Tang, Carsten Schroer, Björn Schäfer, Judith Jung, Michael Dürrschnabel, Ute Jäntsch, Bronislava Gorr   +7 more
wiley   +1 more source

Hierarchy concepts: classification and preparation strategies for zeolite containing materials with hierarchical porosity.

Chemical Society Reviews, 2016
'Hierarchy' is a property which can be attributed to a manifold of different immaterial systems, such as ideas, items and organisations or material ones like biological systems within living organisms or artificial, man-made constructions.
W. Schwieger, A. Machoke, Tobias Weissenberger, A. Inayat, T. Selvam, M. Klumpp, Alexandra Inayat   +6 more
semanticscholar   +1 more source

Powder Metallurgy Preparation of Metastable β Ti–Cr–Ge Alloys for Medical Applications

Advanced Engineering Materials, EarlyView.
This study develops metastable β Ti–Cr–Ge alloys using powder metallurgy for biomedical implants. The Ti–10Cr–2Ge alloy exhibits superior mechanical performance with high yield strength (>1100 MPa), low Young's modulus (<85 GPa), and excellent strain hardening behavior.
Teddy Sjafrizal, Damon Kent, Ali Dehghan‐Manshadi, Matthew S. Dargusch   +3 more
wiley   +1 more source

Metal-organic framework glasses with permanent accessible porosity

Nature Communications, 2018
To date, only several microporous, and even fewer nanoporous, glasses have been produced, always via post synthesis acid treatment of phase separated dense materials, e.g. Vycor glass.
Chao Zhou, L. Longley, A. Krajnc, G. Smales, A. Qiao, Ilknur Eruçar, C. Doherty, Aaron W. Thornton, A. Hill, Christopher W. Ashling, Omid T. Qazvini, Seok J. Lee, P. Chater, N. Terrill, Andrew J. Smith, Y. Yue, G. Mali, D. Keen, S. Telfer, T. Bennett   +19 more
semanticscholar   +1 more source

Porosity and hypercyclic operators [PDF]

Proceedings of the American Mathematical Society, 2005
We study if the set of hypercyclic vectors of a hypercyclic operator is the complement of a σ \sigma -porous set. This leads to interesting results for both points of view: a limitation of the size of hypercyclic vectors, and new examples of first category sets which are not σ \sigma -porous.
openaire   +2 more sources

Optimized Strategy for Fabricating High‐Aspect‐Ratio Periodic Structures Over Large Areas Using ps‐Direct Laser Interference Patterning

Advanced Engineering Materials, EarlyView.
Picosecond direct laser interference patterning (DLIP) enables precise microstructure fabrication on stainless steel. Using a multiscan approach, high‐aspect‐ratio patterns are achieved. Fluence influences structure growth and homogeneity, with smaller periods yielding better uniformity.
Fabian Ränke, Marcelo Sallese, Marcos Soldera, Ignacio Tabares, Flavio Soldera, Andrés Fabián Lasagni   +5 more
wiley   +1 more source

Investigating the Predictive Performance of Gaussian Process Regression in Evaluating Reservoir Porosity and Permeability

Energies, 2018
In this paper, a new predictive model based on Gaussian process regression (GPR) that does not require iterative tuning of user-defined model parameters has been proposed to determine reservoir porosity and permeability.
Solomon Asante-Okyere, Chuanbo Shen, Yao Yevenyo Ziggah, Mercy Moses Rulegeya, Xiangfeng Zhu   +4 more
doaj   +1 more source

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

Investigation of Fault Permeability in Sands with Different Mineral Compositions (Evaluation of Gas Hydrate Reservoir)

Energies, 2015
We used a ring-shear apparatus to examine the perpendicular permeability of sands with different mineral compositions to evaluate fault behavior around gas hydrate reservoirs.
Sho Kimura, Hiroaki Kaneko, Takuma Ito, Hideki Minagawa   +3 more
doaj   +1 more source