The effect of martensite volume fraction and particle size on the tensile properties of a surface-carburized AISI 8620 steel with a dual-phase core microstructure

Erdoğan, Mehmet; Tekeli, Süleyman

doi:10.1016/s1044-5803(03)00070-6

Cited by 49 publications

(25 citation statements)

References 8 publications

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“…The size of martensite regions also affects the strength [16]. Large size of martensite regions is harmful to mechanical properties, due to a decrease in geometrically necessary dislocations and effective barriers to dislocation motion in ferrite [16,[40][41][42]. In addition, the size distribution of martensite regions was not homogeneous, as shown in Figs.…”

Section: 2mentioning

confidence: 99%

Microstructures and mechanical properties of dual phase steel produced by laboratory simulated strip casting

et al. 2015

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Conventional dual phase (DP) steel (0.08C-0.81Si-1.47Mn-0.03Al wt.%) was manufactured using simulated strip casting schedule in laboratory. The average grain size of prior austenite was 117. ±. 44. μm. The continuous cooling transformation diagram was obtained. The microstructures having polygonal ferrite in the range of 40-90%, martensite with small amount of bainite and Widmanstätten ferrite were observed, leading to an ultimate tensile strength in the range of 461-623. MPa and a corresponding total elongation in the range of 0.31-0.10. All samples exhibited three strain hardening stages. The predominant fracture mode of the studied steel was ductile, with the presence of some isolated cleavage facets, the number of which increased with an increase in martensite fraction. Compared to those of hot rolled DP steels, yield strength and ultimate tensile strength are lower due to large ferrite grain size, coarse martensite area and Widmanstätten ferrite. Abstract: Conventional dual phase (DP) steel (0.08C-0.81Si-1.47Mn-0.03Al wt. %) was manufactured using simulated strip casting schedule in laboratory. The average grain size of prior austenite was 117±44 μm. The continuous cooling transformation diagram was obtained. The microstructures having polygonal ferrite in the range of 40-90 %, martensite with small amount of bainite and Widmanstätten ferrite were observed, leading to an ultimate tensile strength in the range of 461 -623 MPa and a corresponding total elongation in the range of 0.31 -0.10. All samples exhibited three strain hardening stages. The predominant fracture mode of the studied steel was ductile, with the presence of some isolated cleavage facets, the number of which increased with an increase in martensite fraction. Compared to those of hot rolled DP steels, yield strength and ultimate tensile strength are lower due to large ferrite grain size, coarse martensite area and Widmanstätten ferrite. Disciplines Engineering | Science and Technology Studies

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Section: 2mentioning

confidence: 99%

Microstructures and mechanical properties of dual phase steel produced by laboratory simulated strip casting

et al. 2015

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“…It contains soft ferrite and hard martensite phases together in which unique combination of strength and ductility is maintained. Therefore, there has been a significant interest on this type of steel especially in the last decade to analyze microstructure-mechanical property relationship [8][9][10][11][12][13][14][15][16]. Samuel and Hussein [8] worked on the microstructure and mechanical properties of quenched and tempered dual-phase steel, 0.14% C-1.5% Mn, 1.0% Cr-0.2% V-0.003% B.…”

Section: Introductionmentioning

confidence: 99%

On the microstructural and mechanical characterizations of a low carbon and micro-alloyed steel

Topçu

Übeylı

2009

Materials & Design

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“…The chemical compositions of these steels are not unlike those of dual-phase steels, in that the latter contain low percentages of C (< 0.3%), Si, Mn, Cr and other alloying elements [12]. AISI 8620 steels are carburizing steels used in moderate section sizes and are among the most widely used case-hardening steels.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Hardness and Wear Behaviour οf Boronized and Carburized AISI 8620 Steels

et al. 2009

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In this study, the hardness and wear behaviour of carburized and boronized AISI 8620 steels have been studied. The boronizing treatment increased the hardness of AISI 8620 steels from 395 HV0.1 to a maximal 1610 HV0.1 compared to the carburized steels and also significantly improved its wear behaviour. From obtained results, it can be concluded that boronizing is very effective surface hardening method for improving the wear properties of AISI 8620 steels.

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The effect of martensite volume fraction and particle size on the tensile properties of a surface-carburized AISI 8620 steel with a dual-phase core microstructure

Cited by 49 publications

References 8 publications

Microstructures and mechanical properties of dual phase steel produced by laboratory simulated strip casting

Microstructures and mechanical properties of dual phase steel produced by laboratory simulated strip casting

On the microstructural and mechanical characterizations of a low carbon and micro-alloyed steel

Comparison of Hardness and Wear Behaviour οf Boronized and Carburized AISI 8620 Steels

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