Results 71 to 80 of about 339 (87)

Severe plastic deformation (SPD) and nanostructured materials by machining

Journal of Materials Science, 2007
Large plastic strains between 1 and 15 can be imposed in chips formed by plane-strain (2-D) machining of metals and alloys. This approach has been used to examine microstructure changes induced by large strain deformation in model systems—copper and its alloys, precipitation-hardenable aluminum alloys, high-strength materials such as titanium, Inconel ...
Srinivasan Swaminathan, M. Ravi Shankar, Balkrishna C. Rao, W. Dale Compton, Srinivasan Chandrasekar, Alexander H. King, Kevin P. Trumble   +6 more
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Mechanical Properties of SPD (Severe Plastic Deformation) Processed Copper

Materials Science Forum, 2005
The mechanical behavior of nano grain-sized pure copper produced by various SPD (severe plastic deformation) processes such as ECAP (equal channel angular pressing) and ARB (accumulated roll bonding) was investigated in relation to the microstructural evolution. These processes promoted the formation of equiaxed nanoscale grains in pure copper.
S.Z. Han, Cha Yong Lim, Chang Joo Kim, Sang Shik Kim   +3 more
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High Strength of Aluminium-Based Composites by Different Methods of Severe Plastic Deformation (SPD)

Materials Science Forum, 2022
Composite materials were applied to meet the demands of production efficiency on industrial because they offered the superior properties both of aspects on mechanical and physical properties were constantly being refined and developed with several methods.
Agus Pramono, Anne Zulfia, Klodian Dhoska, Suryana Suryana, Anistasia Milandia, Yeni Muriani Zulaida, Andinnie Juniarsih   +6 more
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Severe plastic deformation (SPD) of titanium at near-ambient temperature

Acta Materialia, 2006
Severe plastic deformation of titanium at near-ambient temperature has been realized using large-strain machining. The material that received the highest levels of strain, the chip, is found to have a nanocrystalline structure with ∼100 nm sized grains. This microstructure is finer than that observed in titanium following equal channel angular pressing
M. Ravi Shankar, Balkrishna C. Rao, Seongeyl Lee, Srinivasan Chandrasekar, Alexander H. King, W. Dale Compton   +5 more
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Indentation Size Effect (ISE) in Copper Subjected to Severe Plastic Deformation (SPD)

Metallurgical and Materials Transactions A, 2014
The characteristic length scale of deformation in copper specimens subjected to severe plastic deformation (SPD) through surface mechanical attrition treatment (SMAT) was studied with indentation experiments. Annealed copper disks were shot peened with 6-mm diameter tungsten carbide spheres with an average velocity of 2.3 m/s for 15 minutes in a ...
Joshua D. Gale, Ajit Achuthan, David J. Morrison   +2 more
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Microstructural and mechanical properties of magnesium alloy processed by severe plastic deformation (SPD) – A review

Materials Today: Proceedings, 2020
Abstract A review on Mechanical properties of ultra-fined grained (UFG) Magnesium based alloy using SPD process is presented in this paper. The properties discussed comprise of microstructural, optical, physical and mechanical behaviour of Ultra- fined grained magnesium alloy and effects of grain size, heat treatment, Extrusion and Annealing ...
P. Mansoor, S.M. Dasharath
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Experimental and numerical analyses of 45 steel during three dimensional severe plastic deformation (3D-SPD)

Archives of Civil and Mechanical Engineering, 2020
Due to the limitation of huge forming load, inhomogeneity of plastic deformation, and small volume of deformation region, it is difficult to prepare bulk ultra-fine grains material (UFGM) with industry size by the existing severe plastic deformation (SPD) methods. In this study, a novel SPD method, namely 3D-SPD, was proposed.
Yuhua Pang, Pengcheng Lin, Qi Sun, Zhe Zhang, Dong Liu   +4 more
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Microstructure Refinement During Severe Plastic Deformation (SPD) of FCC Materials: A Texture Based Study

Materials Science Forum, 2011
FCC materials were subjected to large strain deformation by three techniques: equal channel angular pressing (ECAP), plane-strain machining and friction stir processing (FSP). Based on the orientation imaging mapping (OIM) analysis of the deformed regions, the most likely microstructure refinement mechanisms have been identified for each of the ...
Srinivasan Swaminathan, Terry R. McNelley, Srinivasan Chandrasekar   +2 more
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Synthesis of Hybrid Materials by Severe Plastic Deformation: A New Paradigm of SPD Processing

Advanced Engineering Materials, 2015
An emerging direction of research into severe plastic deformation (SPD), which we refer to as SPD‐induced synthesis of hybrid materials, is presented. At its core is the creation of inner structure made from various materials within the bulk of a solid.
Beygelzimer, Y., Estrin, Y., Kulagin, R.
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Modelling Mechanical Properties of SPD Materials During and After Severe Plastic Deformation

2006
As SPD yields ultra fine grained and/or nanograined structures, modelling of properties at first requires a proper reflection of grain refinement process. A model of the author originally developed for conventional large strain hardening has been successfully adapted to conditions of extended hydrostatic pressure which appears as one of the most ...
M. J. Zehetbauer, L. F. Zeipper, E. Schafler   +2 more
openaire   +1 more source