Influence of NbC Addition on the Sintering Behaviour of Medium Carbon PM Steels

Özdemirler, Doğan; Gündüz, Süleyman; Erden, Mehmet Akif

doi:10.3390/met7040121

Cited by 19 publications

(23 citation statements)

References 19 publications

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“…Sintering is used to combine particles to each other in a certain temperature and time. Similar studies agree with this result [5][6][7]15]. Table 3.…”

Section: Resultssupporting

confidence: 82%

“…The results indicated that the effect of niobium in dispersion strengthening is higher than that of vanadium. Niobium also increases the strength more than vanadium by increasing the pearlite ratio and forming small grains [6,7]. …”

Section: Alloymentioning

confidence: 99%

“…A major benefit of microalloying is the decrease of grain growth rate during austenitization. If fine precipitates exist in austenite, the growth of grains is restricted, leading to a finer grain size [4,7,8]. The kinetics of formation of these precipitates such as carbides and nitrides are different from each other.…”

Section: Alloymentioning

confidence: 99%

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The Effect of the Sintering Temperature and Addition of Niobium and Vanadium on the Microstructure and Mechanical Properties of Microalloyed PM Steels

Erden

2017

Metals

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In this work, the effect of the sintering temperature on the microstructure and mechanical properties of Nb-V added powder metallurgy (PM) steels was investigated. The microstructure and mechanical properties of the Nb-V added PM microalloyed steel were examined by optical microscopy, scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), optical emission spectrometer (OES), tensile and hardness tests. Results indicated that the optimal sintering temperature was 1350 • C and the addition of 0.1%, 0.15% or 0.2% of Nb-V increases the yield strength (YS), ultimate tensile strength (UTS) and hardness of the PM sintered steels. 0.2 wt % Nb-V added PM steel showed the highest values in yield strength (YS), ultimate tensile strength (UTS) and the highest hardness. Elongation also tends to improve with adding Nb-V content. In addition, Nb-V limited grain growth during austenitization.

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“…Sintering is used to combine particles to each other in a certain temperature and time. Similar studies agree with this result [5][6][7]15]. Table 3.…”

Section: Resultssupporting

confidence: 82%

Section: Alloymentioning

confidence: 99%

See 1 more Smart Citation

The Effect of the Sintering Temperature and Addition of Niobium and Vanadium on the Microstructure and Mechanical Properties of Microalloyed PM Steels

Erden

2017

Metals

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“…In the literature [28,29], in studies on determining the effect of Ni addition on the mechanical properties of steels, it is seen that the high Ni content in post-quenching processes decreases the strength as it causes residual austenite. Additionally, in powder metallurgy studies [30,31] it has been reported to decrease strength, as excess alloy content causes porosity. However, in studies without heat treatment, the addition of Ni has increased the strength somewhat.…”

Section: Resultsmentioning

confidence: 99%

The Effect of Nickel on the Microstructure, Mechanical Properties and Corrosion Properties of Niobium–Vanadium Microalloyed Powder Metallurgy Steels

et al. 2020

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In this study, the effects of adding Ni in different ratios to Fe-matrix material containing C-Nb-V produced by powder metallurgy on microstructure, tensile strength, hardness and corrosion behaviors were investigated. Fe-C and Fe-C-Nb-V powders containing 5%, 10%, 13%, 15%, 20%, 30% and 40% nickel were pressed at 700 MPa and then sintered in an Ar atmosphere at 1400 °C. Microstructures of the samples were characterized with optical microscope, scanning electron microscope (SEM) and XRD. Corrosion behaviors were investigated by obtaining Tafel curves in an aqueous solution containing 3.5% NaCl. Mechanical properties were determined by hardness and tensile testing. While Fe-C alloy and Fe-C-Nb-V microalloyed steel without Ni typically have a ferrite-pearlite microstructure, the austenite phase has been observed in the microstructures of the alloys with 10% nickel and further. Yield and tensile strength increased with nickel content and reached the highest strength values with 13% Ni content. The addition of more nickel led to decrease the strength. Analysis of Tafel curves showed that corrosion resistance of alloys increased with increasing nickel concentration.

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“…With every new research and innovations, alloy steels continue to meet the needs. The alloy steel is commonly employed in several sectors, namely, aircraft industry, auto industry, and structures (bridges, buildings) [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Investigation of microstructure, mechanical and machinability properties of Mo-added steel produced by powder metallurgy method

Erden

Yaşar

Korkmaz

et al. 2021

Int J Adv Manuf Technol

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This study presents the impact of molybdenum (Mo) inclusion on microstructure, mechanical, and machinability behavior of steels manufactured with powder metallurgy (PM) approach. PM steel samples with different molybdenum ratios were pressed at 750-MPa pressing pressure and sintered in the atmosphere-controlled tube furnace at 1400°C for 1 h. While particle size and distribution of phases of PM steels with different molybdenum ratios were determined by optical microscope, mechanical properties were determined by applying tensile test. The results were observed that 3% Mo weight-added steel displayed the maximum yield and tensile strength. In addition, the machinability properties of 3% Mo-added steel, which has the highest yield and tensile strength, were investigated. In this work, we researched the thrust force and surface roughness as machinability output, and drilling parameters on the output were determined by utilizing analysis of variance. Finally, SEM images were taken from the inner surfaces of the machined holes and the fractured surfaces from tensile test, and information about the machinability of this alloy produced with PM was presented. As a result, an increase in yield and tensile strength and a reduction in strain were identified with the increase in Mo content. Moreover, the coated cutting tools are better on the machining output than the uncoated cutting tools in terms of green environment. The most important factors on the Fz and Ra are the coating condition and the feed rate with 56.53% and 43.62% PCR, respectively.

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Influence of NbC Addition on the Sintering Behaviour of Medium Carbon PM Steels

Cited by 19 publications

References 19 publications

The Effect of the Sintering Temperature and Addition of Niobium and Vanadium on the Microstructure and Mechanical Properties of Microalloyed PM Steels

The Effect of the Sintering Temperature and Addition of Niobium and Vanadium on the Microstructure and Mechanical Properties of Microalloyed PM Steels

The Effect of Nickel on the Microstructure, Mechanical Properties and Corrosion Properties of Niobium–Vanadium Microalloyed Powder Metallurgy Steels

Investigation of microstructure, mechanical and machinability properties of Mo-added steel produced by powder metallurgy method

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