Effect of vanadium content on dynamic strain ageing in microalloyed medium carbon steel

Karabulut, Hasan; Gündüz, Süleyman

doi:10.1016/j.matdes.2004.01.005

Cited by 21 publications

(8 citation statements)

References 13 publications

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“…These changes are a consequence of the differences in the precipitation distribution. 31 High strength and good toughness in micro-alloyed steels are achieved by a combination of micro-alloying and controlled rolling. During sintering and slow cooling from the sintering temperature NbC(N) or AlN precipitates form in the austenite and the ferrite during the austeniteferrite transformation or after transformation, as suggested by M. A. Erden at al.…”

Section: Resultsmentioning

confidence: 99%

Effect of the addition of niobium and aluminium on the microstructures and mechanical properties of micro-alloyed PM steels

Gündüz¹,

Erden²,

Karabulut³

et al. 2016

Mater. Tehnol.

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In this work, the effects of the addition of Nb and Al on the microstructures and tensile behaviours of micro-alloyed powder metallurgy (PM) steels were investigated. The microstructure of the micro-alloyed PM steels was examined by light microscope, SEM, XRD, XRF and EDS. The results indicated that the addition of (0.1, 0.15 or 0.2) % of Nb-Al increases the yield strength (YS) and the ultimate tensile strength (UTS) of the PM sintered steels. Elongation also tends to improve with an increasing Nb and Al content. In addition, the Nb and Al limit the grain growth during austenitization. Keywords: powder metallurgy, micro-alloyed steels, microstructure V delu je bil preiskovan vpliv dodatka Nb in Al na mikrostrukturo in na natezno trdnost mikrolegiranih PM jekel, izdelanih iz prahov. Mikrostruktura mikrolegiranih PM jekel je bila preiskovana s svetlobnim mikroskopom ter s SEM, XRD, XRF in EDS. Rezultati so pokazali, da dodatek (0,1, 0,15 ali 0,2) % Nb-Al pove~a mejo plasti~nosti (YS) in natezno trdnost (UTS) sintranih PM jekel. Tudi raztezek se izbolj{a s pove~ano vsebnostjo Nb in Al. Ugotovljeno je {e, da dodatek Nb in Al omejuje rast zrn med avstenitizacijo.

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Section: Resultsmentioning

confidence: 99%

Effect of the addition of niobium and aluminium on the microstructures and mechanical properties of micro-alloyed PM steels

Gündüz¹,

Erden²,

Karabulut³

et al. 2016

Mater. Tehnol.

Self Cite

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“…Table 2 also shows that the average grain size decreases with increasing the amount of TiN up to 0.2% by weight. This is due to the precipitation of TiC, TiN ve TiC(N) precipitates during sintering which prevented the growth of the austenite grains [5]. One of the properties of microalloy elements is that they avoid the grain growth during sintering and austenitization with the carbide and nitrides they have created up.…”

Section: Microstructurementioning

confidence: 99%

Effect of Tin Addition on the Microstructure and Mechanical Properties of Pm Steels

Türkmen¹,

Karabulut²,

Erden³

et al. 2017

NWSA

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In this work, the effects of TIN additions on the microstructures and tensile behaviors of microalloyed powder metallurgy (PM) steels were investigated. The microstructure of the microaloyed PM steels was characterized by optic microscope, SEM and EDS. Results indicated that the addition of TiN in the percentage of 0.1, 0.2 or 0.5 increases the yield strength (YS) and ultimate tensile strength (UTS) of the PM steels in the sintered conditions. Elongation also tends to improve with increasing TiN content. In addition, TiN prevented grain growth during sintering prior to cooling.Keywords: Powder Metallurgy, Microalloyed Steel, Tensile Strength, SEM, EDS INTRODUCTIONTendency towards the production of new types of materials for specific applications is increasing with each passing day because simple material types have not been able to meet the increasing demands in the last 20 years [1]. Two or more of the same or different groups of materials are combined together for the best features or to reveal a new feature. Microalloyed steels are group of steels which include niobium (Nb), vanadium (V) and titanium (Ti) with the range of 0.05% and 0.20 % and have superior properties such as high strength, high toughness, and low ductile brittle transition temperature [2]. One of the properties of microalloyed elements is that they perevent grain growth during sintering and austenitization with carbides and nitrides they have created. TiN are microalloyed precipitates that reduce grain growth, increase satiety, and are found insoluble in the HAZ area of the weld. Moreover, TiN is resistant to high temperatures, and it is widely used for wear protection [3 and 5]. Powder metallurgy (PM) production technology makes it possible to economically produce high-quality, complex parts. This manufacturing technique converts metal powder having different sizes, shapes and packing properties into strong, precise and high-performance parts [6]. In this study, the desired composition PM steel were produced with the powder metallurgy technique by adding TiN in different ratios into Fe matrix and resulting microstructure mechanical properties were compared.

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“…Microstructure characteristics of the sintered plain carbon PM steel and microalloyed PM steels are given in Table 2, which showed grain sizes decreased when the Nb-Al content increased to 0.1, 0.15 or 0.2 wt.-%. These changes would be expected as a result of the differences in precipitation distribution [20]. The microalloying elements prevent the motion of grain boundaries, recrystallisation boundaries and dislocations when they are present either as solute atoms or precipitate particles.…”

Section: Resultsmentioning

confidence: 99%

Wear behaviour of sintered steels obtained using powder metallurgy method

Erden¹,

Gündüz²,

Karabulut³

et al. 2017

mech

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Effect of vanadium content on dynamic strain ageing in microalloyed medium carbon steel

Cited by 21 publications

References 13 publications

Effect of the addition of niobium and aluminium on the microstructures and mechanical properties of micro-alloyed PM steels

Effect of the addition of niobium and aluminium on the microstructures and mechanical properties of micro-alloyed PM steels

Effect of Tin Addition on the Microstructure and Mechanical Properties of Pm Steels

Wear behaviour of sintered steels obtained using powder metallurgy method

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