Properties and Structure of Sintered Boron Containing Carbon Steels

Baglyuk, G. А.

doi:10.5772/34267

Cited by 7 publications

(6 citation statements)

References 6 publications

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Section: Microstructure Observationsmentioning

confidence: 99%

“…Harder B 4 C powder has a greater effect on the compression behavior of the mixture, as a higher ratio of B 4 C is more resistant to compressibility than the iron powder. Another reason for the porosity was the dissociation of boron carbide particles from the contacted iron matrix after sintering the Fe-B 4 C powder mixtures, defined as diffusion porosity [29]. The increase of porosity also reduces the fracture energy, as it reduces the cross-sectional area exposed to fracture.…”

Section: Microstructure Observationsmentioning

confidence: 99%

“…If the amount of boron in iron exceeds the solubility limit, boron cannot enter the iron lattice. The over-reinforcement or diffusion of boron will result in precipitation in the structure, generating an insoluble residue[29].Residual or unreacted B 4 C particles act as a barrier to the diffusion of boron, resulting in residual particles. These particles are discontinuous and cause a preferential crack initiation between particle-matrix interfaces under tension or bending forces.…”

mentioning

confidence: 99%

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Effect of In-Situ Synthesized Boride Phases on the Impact Behavior of Iron-Based Composites Reinforced by B4C Particles

Nair

Hamamcı

2020

Metals

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The objective of this study is to investigate the impact behavior of iron-based composites reinforced with boron carbide (B4C) particles and in-situ synthesized iron borides (Fe2B/FeB). The composite specimens (Fe/B4C) were fabricated by hot-pressing under a pressure of 250 MPa at 500 °C, and sintered at a temperature of 1000 °C. The effects of the reinforcement ratio on the formation of in-situ borides and impact behavior were investigated by means of different volume fractions of B4C inside the iron matrix: 0% (un-reinforced), 5%, 10%, 20%, and 30%. Drop-weight impact tests were performed by an instrumented Charpy impactor on reinforced and un-reinforced test specimens. The results of the impact tests were supported with microstructural and fractographical analysis. As a result of in-situ reactions between the Fe matrix and B4C particles, Fe2B phases were formed in the iron matrix. The iron borides, formed in the iron matrix during sintering, heavily affected the hardness and the morphology of the fractured surface. Due to the high amount of B4C (over 10%), porosity played a major role in decreasing the contact forces and fracture energy. The results showed that the in-situ synthesized iron boride phases affect the impact properties of the Fe/B4C composites.

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Section: Microstructure Observationsmentioning

confidence: 99%

Section: Microstructure Observationsmentioning

confidence: 99%

mentioning

confidence: 99%

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Effect of In-Situ Synthesized Boride Phases on the Impact Behavior of Iron-Based Composites Reinforced by B4C Particles

Nair

Hamamcı

2020

Metals

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“…• Activators of sintering are used in order to accelerate contraction, decrease sintering temperature or formation of proper microstructure of a sinter. They influence mainly acceleration of diffusion processes, formation of transient liquid phase and prevent grain growth [1,[4][5][6][7][8].…”

Section: IVmentioning

confidence: 99%

Consolidation of AISI316L Austenitic Steel — TiB2 Composites by SPS and HP-HT Technology

Sulima¹

2015

Sintering Techniques of Materials

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“…It exhibits good corrosion resistance and strength for its potential use in implant applications [32,33]. Boron has proved to be a promising additive to increase the densification process [34,35] and for increasing the overall density of the resulting stainless steel alloy [36]. Both these alloying elements address the highlighted issues related to the use of SS alloy as an implant material.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Nitrogen Absorption on Microstructure, Properties and Cytotoxicity Assessment of 316L Stainless Steel Alloy Reinforced with Boron and Niobium

et al. 2019

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In the past, 316L stainless steel (SS) has been the material of choice for implant manufacturing. However, the leaching of nickel ions from the SS matrix limits its usefulness as an implant material. In this study, an efficient approach for controlling the leaching of ions and improving its properties is presented. The composition of SS was modified with the addition of boron and niobium, which was followed by sintering in nitrogen atmosphere for 8 h. The X-ray diffraction (XRD) results showed the formation of strong nitrides, indicating the diffusion of nitrogen into the SS matrix. The X-ray photoelectron spectroscopy (XPS) analysis revealed that a nitride layer was deposited on the sample surface, thereby helping to control the leaching of metal ions. The corrosion resistance of the alloy systems in artificial saliva solution indicated minimal weight loss, indicating improved corrosion resistance. The cytotoxicity assessment of the alloy system showed that the developed modified stainless steel alloys are compatible with living cells and can be used as implant materials.

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Properties and Structure of Sintered Boron Containing Carbon Steels

Cited by 7 publications

References 6 publications

Effect of In-Situ Synthesized Boride Phases on the Impact Behavior of Iron-Based Composites Reinforced by B4C Particles

Effect of In-Situ Synthesized Boride Phases on the Impact Behavior of Iron-Based Composites Reinforced by B4C Particles

Consolidation of AISI316L Austenitic Steel — TiB2 Composites by SPS and HP-HT Technology

The Influence of Nitrogen Absorption on Microstructure, Properties and Cytotoxicity Assessment of 316L Stainless Steel Alloy Reinforced with Boron and Niobium

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