Results 1 to 10 of about 625,188 (172)

Investigation of the nature of defects on the outer surface of heat-treated seamless pipes

open access: yesЛитьë и металлургия, 2020
Compliance with the quenching technology ensures a high-quality product with the required properties. Violation of the modes of heating for quenching and cooling during quenching leads to the formation of defects such as soft spots and quenching cracks ...
O. V. Rozhkova
doaj   +1 more source

Short-term hot hardness characteristics of rolling-element steels [PDF]

open access: yes
Short-term hot hardness studies were performed with five vacuum-melted steels at temperatures from 294 to 887 K (70 to 1140 F). Based upon a minimum Rockwell C hardness of 58, the temperature limitation on all materials studied was dependent on the ...
Chevalier, J. L.   +2 more
core   +1 more source

Hardness of decoding quantum stabilizer codes [PDF]

open access: yes, 2013
In this article we address the computational hardness of optimally decoding a quantum stabilizer code. Much like classical linear codes, errors are detected by measuring certain check operators which yield an error syndrome, and the decoding problem ...
Iyer, Pavithran, Poulin, David
core  

Decisive Effect of Gas Metal Arc Welding-Based Additive Manufacturing on the Bead Profile, Microstructure and Tensile Properties of Ni-Cr-Mo Components

open access: yesEngineering Proceedings
This study focuses on metal inert gas welding for nickel alloy additive manufacturing using both cold metal transfer (CMT) and pulse multi control (PMT).
Aghesha M. Alwyn   +2 more
doaj   +1 more source

Combinatorial Design of an Electroplated Multi-Principal Element Alloy: A Case Study in the Co-Fe-Ni-Zn Alloy System

open access: yesMetals
Multi-principal element alloys (MPEAs) are at the forefront of materials science due to their large variety of compositions, which can yield unexplored properties.
Péter Nagy   +4 more
doaj   +1 more source

Solidification Analysis of a High Cr-Ni Heat-Resistant Alloy: Microstructure and Hardness Evaluation [PDF]

open access: yesMaterials Research
Ni-Cr-based alloys are known for their high resistances to corrosive environments, high temperatures, and stresses, finding wide application in furnace systems in petrochemical plants.
Wellington Anjos da Silva   +2 more
doaj   +1 more source

Effects of environment on microhardness of magnesium oxide [PDF]

open access: yes
Micro-Vickers hardness measurements of magnesium oxide single crystals were conducted in various environments. These environments included air, nitrogen gas, water, mineral oil with or without various additives, and aqueous solutions with various pH ...
Buckley, D. H., Ishigaki, H.
core   +1 more source

Rational redistribution of waste of resources. Manufacturing of equipment for cutting machine

open access: yesЛитьë и металлургия, 2019
Almost all metal at OJSC «Byelorussian Steel Works» – management company of holding «Belarusian Metallurgical Company» includes today a mandatory physical-mechanical tests which allow to estimate the parameters of the raw materials, to know the reasons ...
Yu. E. Soloviev, I. A. Kovaleva
doaj   +1 more source

Friction and hardness of gold films deposited by ion plating and evaporation [PDF]

open access: yes
Sliding friction experiments were conducted with ion-plated and vapor-deposited gold films on various substrates in contact with a 0.025-mm-radius spherical silicon carbide rider in mineral oil.
Buckley, D. H.   +2 more
core   +1 more source

The phase composition, structure and properties of high-temperature-based powders of the system iron-aluminum obtained by the technology of the reaction-mechanical alloying. Foundry production and metallurgy

open access: yesЛитьë и металлургия, 2019
The regularities of the formation of powders based on the Fe-Al system, obtained by the method of mechanical alloying and intended for the deposition of thermal spraying coatings were established.
F. G. Lovshenko, A. S. Fedosenko
doaj   +1 more source

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