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

Erden, Mehmet Akif

doi:10.3390/met7090329

Cited by 26 publications

(22 citation statements)

References 31 publications

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“…3 (next page) reveal precipitates of different sizes. Erden [5] had investigated the precipitates behavior in low carbon microalloyed steel containing V and Nb. The results showed that both VC(N) and NbC(N) precipitate in the austenite, forming VNbC(N) precipitates when Nb-V is added to the steel.…”

Section: Resultsmentioning

confidence: 99%

“…It increases hardenability and improves high temperature strength [4]. PM varies greatly between metal processing technologies is a production technique [5]. Certain studies on microstructure or mechanical properties of PM steels are available in the literature.…”

Section: Introductionmentioning

confidence: 99%

“…The sintering process was carried out at 1150, 1250, 1350 and 1400 • C. Yhe results confirmed that yield strength and tensile strength increase as Nb and V ratios (0.1%-0.2%) increase. The mechanism was the formation of precipitates like NbC(N) and VC(N) during the sintering and post-sintering cooling period [5]. * corresponding author; e-mail: makiferden@karabuk.edu.tr…”

Section: Introductionmentioning

confidence: 99%

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The Effect on Mechanical Properties of Pressing Technique in PM Steels

Erden

2019

Acta Phys. Pol. A

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In this work, the effect of pressing technique on the microstructures and tensile behaviors of powder metallurgy (PM) steel with different composition were investigated. Weighed powders for the desired chemical composition were mixed in an industrial conic mixer for 1 h and then cold and warm pressed at 700 MPa with a die. The pressed PM steels were sintered at 1400 • C. PM steels with different pressing technique were analyzed in terms of micrstructure and tensile test. Results indicated that PM steels with warm pressing technique showed the highest values in yield strength (YS) and ultimate tensile strength (UTS).

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Effect on Mechanical Properties of Pressing Technique in PM Steels

Erden

2019

Acta Phys. Pol. A

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“…The reduction in grain size also contributed to the% elongation of the material. In addition, the precipitates formed contributed to the increase of yield and tensile strength by different strength increasing mechanisms such as precipitation hardening, dispersion hardening and clustering hardening [5]. The increase in sintering time improves the% elongation values representing the formability.…”

Section: Experimental Studymentioning

confidence: 99%

“…As a matter of fact, there are studies supporting this result in the literature. For example, Erden [5] investigated the effect of sintering temperature on Nb-V microalloyed steel. In this study, the increase in sintering temperature contributes to the resistance up to a certain temperature, while the temperature decreases to 1400°C.…”

Section: Experimental Studymentioning

confidence: 99%

The Effect of Sintering Time on Tensile Strength of Nb-v Microalloyed Powder Metallurgy Steels

Erden¹

2020

NWSA

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Microalloyed steels can be defined as low alloyed high strength steels which increase the strength of steel by mechanisms such as precipitation hardening, aggregation hardening, particle size reduction, dispersion hardening by adding microalloy elements such as aluminium, niobium, vanadium and titanium in the range of 0.05% and 0.20%. Powder metallurgy is one of the manufacturing methods in which small parts which are difficult to manufacture can be produced in series with some parts which are close to the final shape with minimum material loss and which cannot be produced by other production methods. In this work, effect of different sintering time (1h., 2h. and 3h.) on the tensile strength of powder metallurgy (PM) plain carbon steel and microalloyed steels with different amount of niobium and vanadium content (0-0.1-0.2 wt%) were investigated. As a result, it was determined that the added alloying elements increased the mechanical properties. 0.2 wt % Nb-V added and sintered 2 h. PM steel showed the highest values in yield strength (YS), ultimate tensile strength (UTS).

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

Cited by 26 publications

References 31 publications

The Effect on Mechanical Properties of Pressing Technique in PM Steels

The Effect on Mechanical Properties of Pressing Technique in PM Steels

The Effect of Sintering Time on Tensile Strength of Nb-v Microalloyed Powder Metallurgy Steels

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

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