Results 81 to 90 of about 990,445 (290)

Microstructure of interpass rolled wire + arc additive manufacturing Ti-6Al-4V components [PDF]

, 2015
Mechanical property anisotropy is one of the issues that are limiting the industrial adoption of additive manufacturing (AM) Ti-6Al-4V components. To improve the deposits’ microstructure, the effect of high-pressure interpass rolling was evaluated, and a
Colegrove, Paul A., Martina, Filomeno, Williams, Stewart W.   +2 more
core   +1 more source

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti, Finn‐Lennard Janthur, Selina Raumel, Sascha Jan Zimmermann, Sarah Seffer, René Gustus, Sebastian Herbst, Marc C. Wurz, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Florian Nürnberger   +11 more
wiley   +1 more source

Effect of Nb interlayer thickness on interfacial products and mechanical properties of Ti–6Al–4V/EH690 steel clad plate by vacuum hot rolling

Journal of Materials Research and Technology
The high content of alloying elements in Ti alloys and high-strength steels, combined with the requirement for quenching and tempering heat treatment during the fabrication process of the clad plate, leads to complex interfacial products and poor bonding
F.R. Wang, Y.K. Wang, S.B. Zhu, S. Guo, Y.Q. Wang, G.M. Xie   +5 more
doaj   +1 more source

Investigation of resonant phenomena in a locomotive wheelset on the basis of calculation of natural frequencies and modes of their oscillations on finite element models

Вестник Научно-исследовательского института железнодорожного транспорта, 2017
From the practice of engineering design it is known that in the development of mechanical systems, the operation of which is certainly not based on the phenomena of resonance, self-synchronization, etc., one should be wary of the proximity of the ...
V. S. Kossov, E. S. Ogan’Yan, M. N. Ovechnikov, G. M. Volokhov, A. L. Protopopov, M. V. Timakov   +5 more
doaj   +1 more source

Single Field Baryogenesis

, 2004
We propose a new variant of the Affleck-Dine baryogenesis mechanism in which a rolling scalar field couples directly to left- and right-handed neutrinos, generating a Dirac mass term through neutrino Yukawa interactions.
A. D. Sakharov, A. D. Sakharov, K. R. S. Balaji, Robert H. Brandenberger, V. A. Rubakov   +4 more
core   +1 more source

Atomic Scale Sliding and Rolling of Carbon Nanotubes [PDF]

, 1999
A carbon nanotube is an ideal object for understanding the atomic scale aspects of interface interaction and friction. Using molecular statics and dynamics methods different types of motion of nanotubes on a graphite surface are investigated.
A. Buldum, A. Buldum, A. Buldum, A. Buldum, B. Bhushan, B. N. J. Persson, C. M. Mate, G. Binnig, Jian Ping Lu, Jian Ping Lu, Jian Ping Lu, L. A. Girifalco, M. R. Falvo, R. Saito, R. W. Pastor, S. Ijima, T. Hertel   +16 more
core   +3 more sources

Tribological Performance of 60NiTi Alloy Under Varying Contact Conditions and Elevated Temperatures in Linear Reciprocating Sliding

Advanced Engineering Materials, EarlyView.
This study investigates the tribological response of 60NiTi alloy under dry, water‐lubricated and high‐temperature conditions. The alloy exhibits decreasing wear volume and friction with increasing temperature due to the formation of protective oxide layers. The work clarifies dominant wear mechanisms and demonstrates the suitability of 60NiTi for high‐
Anthony Onyebuchi Okoani, Miguel Angel Selles, Maziar Ramezani   +2 more
wiley   +1 more source

Numerical simulation of single-jet impact cooling and double-jet impact cooling of hot-rolled L-shaped steel based on multiphase flow model

Scientific Reports
In this paper, numerical simulations of single-jet impingement cooling and double-jet impingement cooling processes of heated L-shaped steel are carried out using the VOF model.
Jie Li, Xianming Zhao, Hongliang Zhang, Dezhi Li   +3 more
doaj   +1 more source

Rolling Manifolds: Intrinsic Formulation and Controllability

, 2011
In this paper, we consider two cases of rolling of one smooth connected complete Riemannian manifold $(M,g)$ onto another one $(\hM,\hg)$ of equal dimension $n\geq 2$.
Chitour, Yacine, Kokkonen, Petri
core   +1 more source

Jamming transition in a two-dimensional open granular pile with rolling resistance

, 2014
We present a molecular dynamics study of the jamming/unjamming transition in two-dimensional granular piles with open boundaries. The grains are modeled by viscoelastic forces, Coulomb friction and resistance to rolling.
Atman, Allbens P. F., Combe, Gaël, Magalhães, Caio F. M., Moreira, José G.   +3 more
core   +4 more sources