Results 261 to 270 of about 31,262 (307)

A modified die for equal channel angular pressing

Journal of Materials Processing Technology, 2009
Abstract Tensile stress occurs in the vicinity of upper surface of the specimen in the severe plastic deformation zone, which increases the cracking and fracture tendency of the specimen and impedes the further ECAP processing. In this paper, the conventional ECAP die (Ψ = 16° and Φ = 90°) was modified to eliminate the tensile stress and enhance the ...
Shunqi Wang, Wei Liang, Yu Wang, Liping Bian, Kehua Chen   +4 more
openaire   +1 more source

Non-equal channel angular pressing of aluminum alloy

Scripta Materialia, 2009
Strain history, microstructure and texture were studied in an aluminum alloy processed by the recently proposed process of non-equal channel angular pressing (NECAP). Comparison with alloy processed by equal channel angular pressing (ECAP) has been performed. A much finer microstructure was obtained in NECAP, showing that in this modified ECAP test the
László S. Tóth, Rimma Lapovok, Arman Hasani, Chengfan Gu   +3 more
openaire   +1 more source

Multi Equal Channel Angular Pressing with Rotational Dies

Materials Science Forum, 2003
The recent successful development of the equal channel angular pressing (ECAP) process in metals provides a feasible solution to produce ultra-fine or nano-grained bulk: materials with tailored material properties. However, ECAP is difficult to scale up commercially due to excessive load requirements.
Y.H. Kim, X. Ma, Peter Hodgson, Matthew R. Barnett   +3 more
openaire   +1 more source

Equal channel angular pressing/extrusion

2017
Numerous researches, made to improve mechanical properties of materials with plastic deformation, have brought scientist to discover and develop severe plastic deformation (SPD) technologies. The usage of SPD technologies result in getting ultrafine-graind microstructures of materials.
Ciglar, Damir, Nađ, Nada, Keran, Zdenka, Piljek, Petar   +3 more
openaire   +2 more sources

Equal channel angular pressing with converging billets—Experiment

Materials Science and Engineering: A, 2013
A new concept of equal channel angular pressing (ECAP) with converging billets is proposed and tested experimentally. In its basic configuration, the new ECAP process uses two equal square input channels converging into a single output channel, which is twice as wide as the input channels so that it can accept two converging billets.
Rosochowski, Andrzej, Olejnik, Lech, Richert, Jan, Rosochowska, Malgorzata, Richert, Maria   +4 more
openaire   +2 more sources

Billet temperature rise during equal-channel angular pressing

Scripta Materialia, 2002
AbstractTheactualbillettemperatureduringequal-channelangularpressingwasmeasuredanddiscussed.Thetemperaturerisesofaluminumalloysandamagnesiumalloyat573Kwerebetween4and6Kat673K,whenthedeformationratewas1mms 1 .Adiabaticcompressionisresponsibleforabout10–20%ofthetotalgeneratedheat.
Yoshinori Nishida, Teiichi Ando, Masakazu Nagase, Suk-won Lim, Ichinori Shigematsu, Akira Watazu   +5 more
openaire   +1 more source

Review of Equal Channel Angular Pressing System

Asian Review of Mechanical Engineering, 2016
Equal channel angular pressing (ECAP) is a forming procedure. The Equal Channel Angular Pressing is a hardening treatment with which ductile metals can be processed to refine their grain and sub-grain structure. This process enhances the mechanical strength of metals in terms of tensile strength, stress-controlled fatigue strength, and fatigue crack ...
openaire   +1 more source

Equal channel angular pressing of Mg-Y alloy

AIP Conference Proceedings, 2019
Tribological wear behaviour of Mg-Y alloy in as cast and ECAP’ed condition has been studied using a pin on disk wear testing machine under the load of 10N & 50N with a sliding temperature of 25°,50° and 100°C with a sliding velocity of 0.3 m/s and sliding distance of 3000m. ECAP was done at a temperature of 350°C up to 4 passes using the route Bc.
Chiranth Bellur Prabhakara, Pruthvi Serrao, James Valder, Santhosh Hanumanthe   +3 more
openaire   +1 more source

Chip Extrusion with Integrated Equal Channel Angular Pressing

2015
The direct recycling of aluminum alloy machining chips into finished or semi-finished products by hot extrusion is a promising approach to increase the energy efficiency of aluminum recycling and to overcome the problem of material loss due to oxidation during remelting.
Matthias Haase, Nooman Ben Khalifa
openaire   +1 more source

Equal channel angular pressing of magnesium alloy AZ31

Materials Science and Engineering: A, 2005
Abstract Equal channel angular pressing (ECAP) was applied to a wrought magnesium alloy AZ31 for up to 8 passes at temperatures as low as 100 °C. The application of a back pressure was critical in deforming Mg alloys at lower temperatures. Room temperature mechanical properties were obtained by tensile and hardness tests. With increasing ECAP strain,
K. Xia, J.T. Wang, X. Wu, G. Chen, M. Gurvan   +4 more
openaire   +1 more source