Relationship between the heat resistance and structural parameters of dispersion-strengthened nickel

Portnoi, K. I.; Gorobets, B. R.; Romanovich, I. V.; Babich, B. N.

doi:10.1007/bf00790693

Cited by 4 publications

(3 citation statements)

References 2 publications

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“…Severe service conditions (intense hydroabrasive wear, impact stresses, and elevated temperature in the cutting area) demand that the mechanical and tribological properties of binders be improved. Development of new metal matrix composites and alloys reinforced with nanoparticles is a promising way to resolve the problem [ 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 ]. The use of nano-sized particles (instead of micro-sized ones) for reinforcement of hard compounds is advantageous for the following reasons.…”

Section: Introductionmentioning

confidence: 99%

Improved Mechanical and Tribological Properties of Metal-Matrix Composites Dispersion-Strengthened by Nanoparticles

2009

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Co- and Fe-based alloys produced by powder technology are being widely used as a matrix for diamond-containing composites in cutting, drilling, grinding pplications, etc. The severe service conditions demand that the mechanical and tribological properties of these alloys be improved. Development of metal-matrix composites (MMCs) and alloys reinforced with nanoparticles is a promising way to resolve this problem. In this work, we have investigated the effect of nano-sized WC, ZrO2, Al2O3, and Si3N4 additives on the properties of sintered dispersion-strengthened Co- and Fe-based MMCs. The results show an increase in the hardness (up to 10 HRB), bending strength (up to 50%), wear resistance (by a factor of 2–10) and a decrease in the friction coefficient (up to 4-fold) of the dispersion-strengthened materials. The use of designed alloys as a binder of cutting diamond tools gave a 4-fold increment in the service life, without reduction in their cutting speed.

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Section: Introductionmentioning

confidence: 99%

Improved Mechanical and Tribological Properties of Metal-Matrix Composites Dispersion-Strengthened by Nanoparticles

2009

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“…For process of formation of TiB 2 skeleton during sintering, it seems that the TiB 2 particles distributed in surface region of Cu powders have to move toward inside of Cu and also distribute uniformly in solid Cu matrix. For high-strained metal matrices, coalescence of particulate inclusions by their moving, collisions and agglomeration is described in [7]. Such phenomenon can take place in non-uniform fields of stresses and temperatures.…”

Section: Resultsmentioning

confidence: 99%

Microstructure of Cu-TiB<sub>2</sub> Nanocomposite during Spark Plasma Sintering

Kwon

Kim

Park

et al. 2004

MSF

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Microstructural change of TiB2-Cu nanocomposite during spark plasma sintering (SPS) was investigated. Under simultaneous action of pressure, temperature and pulse electric current titanium diboride nanoparticles distributed in copper matrix move, agglomerate and form a interpenetrating phase composite with a fine-grained skeleton. Increase of SPS temperatures and holding times promotes the densification of sintered compacts due to local melting of copper matrix.

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“…The most famous and simplest way to increase the strength of martensite is to introduce carbon into steel. In addition, the introduction of vanadium, titanium, and niobium into steel makes it possible to obtain a significant strengthening effect due to the formation of carbides, nitrides, and other complex intermetallic compounds [13,14].…”

Section: Introductionmentioning

confidence: 99%

Heat Resistance of Steel N8G6M3FTB Obtained by Surfacing Cored Wire

Eremin

Losev

Borodikhin

2021

DDF

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The operational reliability of rolling production tools depends on the heat resistance of the steel from which they are made. To increase the performance of the rolls, a hardening surfacing with wear-resistant alloys is used. The effectiveness of the applied hardening technology depends on the functional characteristics of the deposited metal. The aim of the work is to study the tempering resistance in the state after heat treatment of the deposited steel (Fe-C-Ni-Mn-Mo-V-Ti-Nb system). It was established that the thermal resistance coefficient of steel 15N8G6M3FTB at temperatures from 650 to 800 °C varies from 0.76 to 0.66, which exceeds the heat resistance of steel 30Kh2V8F by 1.5 times. It is shown that in the fine structure of such a metal after tempering at 800 °C, large amounts of finely dispersed precipitates are observed. These precipitates have a rounded shape up to 100 nm in size and belong to the Laves phases - Fe2Mo, Fe2Nb, and Fe2Ti. The obtained high heat resistance values of 15N8G6M3FTB steel make it possible to recommend it for creating surfacing materials. Flux-cored wire based on this steel can be used for hardfacing hardening of tools operating at temperatures up to 800 °C inclusive.

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Relationship between the heat resistance and structural parameters of dispersion-strengthened nickel

Cited by 4 publications

References 2 publications

Improved Mechanical and Tribological Properties of Metal-Matrix Composites Dispersion-Strengthened by Nanoparticles

Improved Mechanical and Tribological Properties of Metal-Matrix Composites Dispersion-Strengthened by Nanoparticles

Microstructure of Cu-TiB<sub>2</sub> Nanocomposite during Spark Plasma Sintering

Heat Resistance of Steel N8G6M3FTB Obtained by Surfacing Cored Wire

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