Cr ve Ni İlavesinin Sade Karbonlu Çeliğin Mekanik Özelliklerine Etkisi

Demirtaş, Hüseyin; Erden, Mehmet Akif

doi:10.29130/dubited.539930

Cited by 5 publications

(5 citation statements)

References 9 publications

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“…The critical parameter for hardening is the Cr/C ratio, and the higher the ratio, the higher the hardenability. Some studies 21 showed that Cr increased the effect of precipitation hardening in steels. Erden and Demirtaş 21 investigated the effect of Cr-Ni addition on plain carbon steel’s mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

“…Some studies 21 showed that Cr increased the effect of precipitation hardening in steels. Erden and Demirtaş 21 investigated the effect of Cr-Ni addition on plain carbon steel’s mechanical properties. As a result, it was determined that the addition of alloying elements increased the mechanical properties, but the mechanical properties decreased with the amount of alloying elements increasing after 1% wt.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Mo addition on microstructure, mechanical and machinability properties of Cr-PM steels

Erden

Akgün

2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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In this work, it was investigated the effect of molybdenum (Mo) addition on machinability, mechanical properties, and microstructure of Cr steels produced by using powder metallurgy method. Tensile and hardness experiments were applied to define the mechanical properties of the produced Cr-PM steels. The machining experiments have been also performed without coolant on a CNC vertical machining center at three different cutting speeds (150, 210, and 270 m/min), two different feed rates (0.4 and 0.8 mm/tooth), and constant depth of cut (0.5 mm). The machinability of the alloys was evaluated in regard to surface roughness (Ra) and tool wear (Vb). The results indicated that that Cr-PM steel with 5% Mo addition by weight had the highest yield, tensile strength, and hardness, and the best surface quality was obtained in this sample in terms of surface roughness. However, according to Vb measurement results, the cutting performance of the cutting inserts wasnegative affected by MoC(N), CrC(N), and MoCrC(N) precipitates formed in the microstructure of PM steel.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Mo addition on microstructure, mechanical and machinability properties of Cr-PM steels

Erden

Akgün

2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…Demirtaş and Erden [9] produced Cr-Ni steel with the PM method. In this study, the effects of Cr-Ni addition on the tensile strength properties of powder metallurgy plain carbon steel were investigated.…”

Section: Introductionmentioning

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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“…Demirtaşand Erden investigated the effect of the addition of Cr-Ni (0.5-3% by weight) on the mechanical properties to the matrix containing 0.5 C by powder metallurgy method. 17 Their results showed that the addition of the Cr and Ni alloying elements has increased the tensile strength and hardness. Kandavel et al investigated the effects of titanium (Ti) and tungsten (W) addition on tribological behavior of (PM Fe-1%C steel using artificial neural network (ANN).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the mechanical properties and machinability of chromium and molybdenum-added powder metallurgy steels

Vassouf

Akgün

Erden

2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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The present study focuses on the microstructure, mechanical properties, and machining aspects of powder metallurgy (PM) steel containing different rates of chromium (Cr) and molybdenum (Mo). PM steel alloys were pressed at 700 MPa and sintered at 1400°C in a mixture of nitrogen and hydrogen atmosphere for 1 hour. While the precipitates and fracture surfaces of the samples obtained were examined by scanning electron microscope (SEM) and EDS analyzes, the grain size and phase distributions were also examined with an optical microscope. Moreover, tensile and hardness measurement tests were carried out to determine the mechanical properties of the samples with different ratios of Cr and Mo content. The milling experiments were also performed without using coolant in a CNC milling machine at different cutting parameters. The surface roughness (Ra), tool wear (Vb), and wear mechanism were investigated under these conditions. The outcomes of this study reveal that the yield and tensile strength values of the samples with the addition of Cr and Mo increased but the elongation value decreased. The results also stated that the most effective process parameter for both Vb and Ra was the workpiece material and the regression models developed to estimate the output parameters (Vb and Ra) give successful results with high determination coefficients (R2) of 98.05% and 98.11%, respectively.

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Cr ve Ni İlavesinin Sade Karbonlu Çeliğin Mekanik Özelliklerine Etkisi

Cited by 5 publications

References 9 publications

Effect of Mo addition on microstructure, mechanical and machinability properties of Cr-PM steels

Effect of Mo addition on microstructure, mechanical and machinability properties of Cr-PM steels

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

Evaluation of the mechanical properties and machinability of chromium and molybdenum-added powder metallurgy steels

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