Results 261 to 270 of about 39,571 (304)

Nanostructured Bearing Alloy Studies.

1994
Abstract : Work prior to this reporting period focused on achieving a more inert atmosphere for handling and consolidation of the nano-scaled steel powders. As a result, oxygen content in the nano steel powder compacts has been decreased significantly. However, even the decreased level (3% to 5%) is still too high. Further, high carbon levels (6% to 10%
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Nanostructured Ti2448 Biomedical Titanium Alloy

Materials Science Forum, 2009
It is generally accepted that grain refinement by the mechanisms of dislocation interaction, deformation twinning and/or stress-induced martensitic transformation is of relatively low efficiency. Rapid production of nanostructured metallic materials by conventional processing technologies remains a challenge.
Yu Lin Hao, Shi Jian Li, M.L. Sui, Rui Yang   +3 more
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Biological Routes to Metal Alloy Ferromagnetic Nanostructures

Nano Letters, 2004
Magnetic nanoparticles have potential applications in high-density memory devices, but their complicated synthesis often requires high temperatures, expensive reagents, and postsynthesis annealing to achieve the desired magnetic properties. Current synthetic methods for magnetic nanoparticles often require post-synthetic modifications, suggesting that ...
Reiss, Brian D., Mao, Chuanbin, Solis, Daniel J., Ryan, Katherine S., Thomson, Thomas, Belcher, Angela M.   +5 more
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Nanostructure characterization of mechanical alloyed and consolidated iron alloys

Materials Science and Engineering: A, 1997
High-energy ball milling (which is readily adoptable to commercial application) was used to develop sufficient quantities of nanostructured material to produce compacts capable of being measured for macroscopic properties. Characterization of the ball-milled powders show that grain boundary properties play a significant role in the overall properties ...
J. Rawers, R. Krabbe, N. Duttlinger
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Isothermal grain growth in mechanically alloyed nanostructured Fe80Ti8B12 alloy

Materials Letters, 2003
Abstract Isothermal grain growth in a mechanically alloyed nanostructured Fe80Ti8B12 alloy was investigated at 915–985 K by TEM and XRD methods. Crystallization of the amorphous phase and grain coarsening stages were observed, and each stage was analyzed using models of a grain growth with dragging of grain boundaries and of normal grain growth ...
P.V. Krakhmalev, D. Yi, L. Nyborg, Y. Yao   +3 more
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Deformation Mechanisms of Nanostructured Al Alloys

Advanced Engineering Materials, 2005
AbstractCryomilling has emerged in recent years as an effective approach to process large amounts of nanostructured Al alloys. In the present review, progress in our understanding of the microstructural characteristics and deformation behavior of nanostructured Al alloys processed via consolidation of cryomilled nanostructured powders is reviewed in an
B. Q. Han, E. J. Lavernia
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Alloying behaviour in Cu–Pd nanostructures

Physica B: Condensed Matter, 2001
Abstract Monte Carlo simulation procedure has been used to study the alloying behaviour in Cu–Pd cubo-octahedral nanostructures as a function of temperature, heat of mixing and the cluster size. Alloying is found to increase with increase in negative heat of mixing and with temperature. For a fixed value of the heat of mixing the alloying is found in
Mahesh Menon, Badal C. Khanra
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Nanostructural reinforcing phases in metal alloys

2008 Third International Forum on Strategic Technologies, 2008
In the work the basic leading-outs of the structural theory of strength are resulted, the most effective dislocation models of reinforcement are formulated which provide the raise of constructive strength of alloys. Treatment aimed at activization of effective models of reinforcement is offered.
N.S. Mochalina, A.A. Drobyaz, L.I. Tushinsky   +2 more
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Nanostructuring of Metals, Alloys, and Composites

2020
Nanostructured metal and alloy development represented a broad frontier in the materials science research in the last two decades. The fundamental research is based on the general assumption that material properties and deformation mechanisms strongly vary as the grain size is reduced from microcrystalline regime (>1 μm) to ultrafine grain regime (1 μm–
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Noble-Metal Based Random Alloy and Intermetallic Nanocrystals: Syntheses and Applications

Chemical Reviews, 2021
Ming Zhou, Can Li, Jiye Fang
exaly