Mechanical and Tribological Properties of Fe−Cu−Ni−Sn Materials with Different Amounts of CrB2 Used as Matrices for Diamond-Containing Composites

Мечник, В. А.; Бондаренко, Н. А.; Kolodnitskyi, V. M.; Закиев, В. И.; Закиев, И. М.; Игнатович, С. Р.; Yutskevych, Sviatoslav

doi:10.3103/s1063457620040061

Cited by 14 publications

(4 citation statements)

References 38 publications

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“…The segregation of micro-alloying elements at grain boundaries not only occupies the nucleation site of DP, but also impedes the migration of grain boundaries [18]. On the one hand, adding some micro-alloying elements (Cr, Si, Al, Ti, Co, Fe and Nb) can inhibit the grain growth during heat treatment, and improve organization and performance [19][20][21][22][23][24]. On the other hand, the second phase particles can also be introduced at grain boundaries to inhibit the formation of DP, so as to maintain mechanical properties of the alloy [25,26].…”

Section: Introductionmentioning

confidence: 99%

Effect of Different Mo Addition on Microstructure and Mechanical Properties of Cu-15Ni-8Sn Alloy

Zhang

Shu³

et al. 2022

Materials

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In the present study, Mo was added to Cu–15Ni–8Sn alloy as the fourth element to solve the limitation of service performance of the alloy by composition design. The phase composition, microstructure transformation and mechanical properties of Cu–15Ni–8Sn–xMo (x = 0.3, 0.9, 1.5 wt.%) alloy were systematically studied by simulation calculation and experimental characterization. The results show that the addition of Mo can improve the as-cast structure of Cu–15Ni–8Sn alloy and reduce segregation and Cu–Mo phase precipitates on the surface with the increase in Mo contents. During solution treatment, Mo can partially dissolve into the matrix, which may be the key to improving the properties of the alloy. Furthermore, the discontinuous precipitation of Sn can be effectively inhibited by adding the appropriate amount of Mo to Cu–15Ni–8Sn alloy, and the hardness of alloy does not decrease greatly after a long-time aging treatment. When Mo content is 0.9 wt.%, the alloy reaches the peak hardness of 384 HV at 4 h of aging. These results provide new ideas for composition optimization of Cu–15Ni–8Sn alloy.

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Section: Introductionmentioning

confidence: 99%

Effect of Different Mo Addition on Microstructure and Mechanical Properties of Cu-15Ni-8Sn Alloy

Zhang

Shu³

et al. 2022

Materials

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“…A separate group of actions to improve the properties of diamond tools is the strengthening of the Fe–Cu–Ni–Sn binder by introducing particles of hard ceramic materials. For example, this bond with 2 wt.% CrB2 has very good tribological properties [ 151 ]. Ball-milled, sintered Fe–Ni–Cu–Sn–C, Fe–Ni–Cu–Sn–C-Al 2 O 3 and Fe–Ni–Cu–Sn–C–Al 4 C 3 materials showed fine-grained microstructures and significant strengthening due to a martensitic transformation [ 152 ].…”

Section: Iron-based Materials As Solutions For Crm Substitution Inmentioning

confidence: 99%

Solutions of Critical Raw Materials Issues Regarding Iron-Based Alloys

et al. 2021

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The Critical Raw Materials (CRMs) list has been defined based on economic importance and supply risk by the European Commission. This review paper describes two issues regarding critical raw materials: the possibilities of their substitution in iron-based alloys and the use of iron-based alloys instead of other materials in order to save CRMs. This review covers strategies for saving chromium in stainless steel, substitution or lowering the amounts of carbide-forming elements (especially tungsten and vanadium) in tool steel and alternative iron-based CRM-free and low-CRM materials: austempered ductile cast iron, high-temperature alloys based on intermetallics of iron and sintered diamond tools with an iron-containing low-cobalt binder.

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“…Однако их использование в условиях высоких нагрузок и температур, развивающихся в зоне контакта, может привести к существенной пластической деформации рабочей области и, в результате, к выводу инструмента из строя. Поэтому наиболее перспективным направлением является применение связок на основе железных сплавов (они имеют достаточно высокую температуру плавления, сродство к углероду, прочность и технологичность [6][7][8]) с введением порообразующих агентов. Наличие в связках пор позволит разупрочнить связку и изменить механизм износа при трении.…”

Section: Introductionunclassified

Mechanical properties and wear resistance of Fe–Ni–Cu-based metal matrix composites reinforced with hollow corundum microspheres

Bychkova

Manakova

Akhmetov

et al. 2022

Izv. VUZ. Poroshk. Met.

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This paper focuses on the development of composite materials based on the Fe–Ni–Cu alloy with hollow corundum microspheres (HCM). The composites were produced by means of powder metallurgy: by mixing initial metallic powders in various types of mixers followed by hot pressing. Compact samples of Fe–Ni–Cu + HCM composites featured high relative density and microstructure homogeneity. The introduction of HCM leads to a decrease in strength to 30 % (from 1125 MPa to 800 MPa at a HCM concentration of 15 vol.%). However, resulting composite materials retained high plasticity. It was established by the micromechanical modeling method that such composites have stress concentration regions not at the interface between HCM and the matrix, but on the inner surface of microspheres. On the contrary, the adjacent matrix volume around HCM features stress relaxation and «unloaded» regions formed. HCM introduction into the matrix based on the Fe–Ni–Cu alloy increases wear resulting from friction on M300 concrete by 50–170 % with a grain size of 70–100 μm and by 160–325 % with a grain size of 100–140 μm. During friction, HCMs act as a reservoir for debris (concrete particles), so the matrix surface remains free of wear products and directly contacts the material processed. The heavy wear of composites with HCM makes them promising for use as a binder in diamond tools designed for the dry cutting of concrete and reinforced concrete.

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Mechanical and Tribological Properties of Fe−Cu−Ni−Sn Materials with Different Amounts of CrB2 Used as Matrices for Diamond-Containing Composites

Cited by 14 publications

References 38 publications

Effect of Different Mo Addition on Microstructure and Mechanical Properties of Cu-15Ni-8Sn Alloy

Effect of Different Mo Addition on Microstructure and Mechanical Properties of Cu-15Ni-8Sn Alloy

Solutions of Critical Raw Materials Issues Regarding Iron-Based Alloys

Mechanical properties and wear resistance of Fe–Ni–Cu-based metal matrix composites reinforced with hollow corundum microspheres

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