Results 261 to 270 of about 1,438,934 (346)

Microstructural evolution and high temperature oxidation characteristics of cold sprayed Ni-20Cr nanostructured alloy coating

Surface & Coatings Technology, 2019
Mechanically alloyed Ni-20Cr (wt%) nanocrystalline powder was cold spray deposited on SA 516 Grade 70 steel. The microstructure and high temperature oxidation characteristics of Ni-20Cr nanostructured alloy coated steel have been investigated. The cyclic
S. Swaminathan, S. Hong, M. Kumar, W. Jung, Dong-Ik Kim, H. Singh, I. Choi   +6 more
semanticscholar   +1 more source

Bulk nanostructured AlCoCrFeMnNi chemically complex alloy synthesized by laser-powder bed fusion

, 2020
We report the synthesis of a bulk nanostructured alloy using the laser-powder bed fusion process. The equiatomic AlCoCrFeMnNi chemically complex alloy forms a nanoscale modulated structure, which is homogeneously distributed in the as-built condition ...
H. Jung, N. Peter, E. Gartner, G. Dehm, V. Uhlenwinkel, E. Jagle   +5 more
semanticscholar   +1 more source

Bulk Nanostructured Multicomponent Alloys

Advanced Engineering Materials, 2001
Bulk nanostructured composite materials can be obtained by partial devitrification of slowly cooled bulk glass-forming multicomponent metallic glasses or by blending a glassy matrix alloy with insoluble second-phase particles by solid state processing.
Eckert, J., Reger-Leonhard, A., Weiss, B., Heilmaier, M., Schultz, L.   +4 more
openaire   +1 more source

Precipitate Strengthening of Nanostructured Aluminium Alloy

Journal of Nanoscience and Nanotechnology, 2012
Grain boundaries and precipitates are the major microstructural features influencing the mechanical properties of metals and alloys. Refinement of the grain size to the nanometre scale brings about a significant increase in the mechanical strength of the materials because of the increased number of grain boundaries which act as obstacles to sliding ...
Kinga, Wawer, Malgorzata, Lewandowska, Krzysztof J, Kurzydlowski   +2 more
openaire   +2 more sources

On the widths of stacking faults formed by dissociation of different types of full dislocations in a nanostructured Al alloy

, 2020
This paper studies the widths of the stacking faults (SFs) formed by the dissociation of screw and 60° full dislocations in a nanostructured Al alloy processed via high-pressure torsion.
Zhigang Yan, Yaojun Lin
semanticscholar   +1 more source

Fretting fatigue characteristics of Ti-6Al-4V alloy with a gradient nanostructured surface layer induced by ultrasonic surface rolling process

International Journal of Fatigue, 2019
A gradient nanostructured (GNS) surface layer is synthesized on the surface of a Ti-6Al-4V alloy by means of the ultrasonic surface rolling process (USRP).
Cheng-song Liu, Dao-xin Liu, Xiao-hua Zhang, Ni Ao, Xingchen Xu, Dan-yang Liu, Jing Yang   +6 more
semanticscholar   +1 more source

Lomer-Cottrell locks with multiple stair-rod dislocations in a nanostructured Al alloy processed by severe plastic deformation

Materials Science & Engineering: A, 2019
Recently Lomer-Cottrell (L-C) locks as barriers to pin and entrap dislocations and thus to enhance work-hardening and ductility of nanostructured (NS) metals and alloys have received attention. This letter reports on a new type of L-C locks with multiple
Zhigang Yan, Yaojun Lin
semanticscholar   +1 more source

Synthesis and in-vitro performance of nanostructured monticellite coating on magnesium alloy for biomedical applications

Journal of Alloys and Compounds, 2019
Biodegradable magnesium alloy was coated by nanostructured monticellite (Mon; CaMgSiO4) through electrophoretic deposition (EPD) coupled with plasma electrolytic oxidation (PEO) with the purpose of enhancing the corrosion properties, bioactivity, and ...
H. R. Bakhsheshi‐Rad, E. Hamzah, A. Ismail, M. Aziz, A. Najafinezhad, M. Daroonparvar   +5 more
semanticscholar   +1 more source

Nanostructured WCCo alloy prepared by mechanical alloying

Journal of Alloys and Compounds, 1996
Abstract Nanocrystalline cemented carbide powder of WCCo was directly synthesized by mechanical alloying. The structure evolution of the powders was monitored by X-ray diffraction, scanning electron microscope and thermal analysis. Results show that the formation of the compounds is controlled by an inter-diffusion reaction between elements. Powders
M.A. Xueming, J.I. Gang
openaire   +1 more source

Alloy effects in nanostructures

Nanostructured Materials, 1993
Abstract Thermal stability and microstructure of nanocrystalline alloys are determined by the interaction of the chemical components with the topological defects. An important aspect of this interaction is the reduction of the grain boundary specific energy by grain boundary segregation.
openaire   +1 more source