Effect of austenite dispersion on phase transformation in dual phase steel

Erdoğan, Mehmet

doi:10.1016/s1359-6462(02)00500-6

Cited by 48 publications

(37 citation statements)

References 13 publications

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“…This result is in good agreement with literature [10][11][12][13][14]. The specimens C900Q and C900QQ, with its nearly wholly martensitic structure throughout the specimen, had the highest 0.2% proof and tensile strength and the lowest elongation values among the different austenitizing temperatures.…”

Section: (A) and (B)supporting

confidence: 91%

Effect of martensite volume fraction and its morphology on the tensile properties of ferritic ductile iron with dual matrix structures

Kocatepe

Cerah

Erdoğan

2006

Journal of Materials Processing Technology

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Section: (A) and (B)supporting

confidence: 91%

Effect of martensite volume fraction and its morphology on the tensile properties of ferritic ductile iron with dual matrix structures

Kocatepe

Cerah

Erdoğan

2006

Journal of Materials Processing Technology

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“…After intercritical heat treatments, the starting microstructure with ferrite + pearlite was coarse dispersed ferrite + martensite grains, while the starting microstructure with martensite was fine dispersed ferrite + martensite grains. Similar results were also reported by some researchers [17][18][19][20][21]. Average grain sizes of 22, 27, 23, 17, 14, 12 µm for the specimens 740C30, 780C50, 840C80, 760F30, 800F50, 840F80 were obtained, respectively.…”

Section: Heat Treatments Welding and Microstructuressupporting

confidence: 90%

Effect of MAG welding on microstructure and mechanical properties of dual phase steel

ULU¹,

CAKMAKKAYA²,

TALAS³

2021

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In this study, the effect of metal active gas (MAG) welding has been evaluated on the microstructural and mechanical properties of dual phase steel. Low carbon dual phase steels containing varying volume fraction of martensite was produced with coarse and fine microstructure. Specimens were joined by MAG welding method and tensile tests and microstructural analysis were performed on these specimens. Initial microstructure of steel plates appears to be a factor in determining the microstructure of heat affected zone (HAZ). Average grain size in MAG weld metal deposited on fine grained dual phase steels produced was in the range of 7.7 to 8.9 micron. Columnar grains with comparatively large average grain size were also observed in weld metals. Yield and maximum tensile strengths are relatively lower than those of non welded steels. Tensile strengths of weld metals (WM) deposited on initially coarse grained dual phase steels yielded better results than those with initially fine grained dual phase steels.K e y w o r d s : dual phase (DP) steel, metal active gas (MAG) welding, microstructure, mechanical properties

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“…For series B steel with primary microstructure of martensite, austenite nucleated at lath interfaces, lath colony boundaries of martensite and prior austenite grain boundaries 11 . As can be seen from Figure 5, a holding time of 10 minutes only made carbides precipitate from martensite, acting as nucleating sites for austenite further.…”

Section: Microstructuresmentioning

confidence: 99%

Study on microstructures and work hardening behavior of ferrite-martensite dual-phase steels with high-content martensite

Zuo

Chen²,

Wang³

2012

Mat. Res.

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A kind of medium-carbon low-alloy dual-phase steels with high-content martensite produced by intercritical annealing at 785-830 °C for 10-50 minutes were studied in aspect of microstructures and work hardening behavior using SEM and tensile testing machine. The experimental results showed that the work hardening of the studied steels obeyed the two-stage work hardening mechanism, whose work hardening exponent of the first stage was higher than that of the second stage. The work hardening exponent increased with increasing the intercritical annealing temperature and time. For series A steel intercritically annealed at 785 °C with starting microstructure of ferrite plus pearlite, austenite nucleated at the pearlite colonies, so the holding time of only 50 minutes can increase the work hardening exponent obviously. For series B steel with starting microstructure of martensite, austenite nucleated at lath interfaces, lath colony boundaries of primary martensite and carbides, accelerating the formation of austenite, so holding time for 30 minutes made the work hardening exponent increase obviously. High work hardening rate during initial plastic deformation (<0.5% strain) was observed.

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Effect of austenite dispersion on phase transformation in dual phase steel

Cited by 48 publications

References 13 publications

Effect of martensite volume fraction and its morphology on the tensile properties of ferritic ductile iron with dual matrix structures

Effect of martensite volume fraction and its morphology on the tensile properties of ferritic ductile iron with dual matrix structures

Effect of MAG welding on microstructure and mechanical properties of dual phase steel

Study on microstructures and work hardening behavior of ferrite-martensite dual-phase steels with high-content martensite

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