The tempering behavior of a plain carbon dual-phase steel

Joarder, A.; Jha, J. N.; Ojha, S. P.; Sarma, D. S.

doi:10.1016/1044-5803(90)90010-h

Cited by 17 publications

(13 citation statements)

References 7 publications

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“…[32] The finer carbides in DP R steel (Table IV) were associated with the higher carbon content leading to the twinned substructure of a¢ phase, further confirming that the tempering characteristic of a¢ in DP steel is similar to that of martensitic steel with similar carbon content. [47] EDX analysis suggested that the substitutional composition of precipitated cementite in nonisothermal tempering is related to the richness of that particular DP steel chemistry (Table V). For example, cementite of DP R steel comprised high Cr and Mn content, suggesting precipitation of substitutional rich cementite consistent with the bulk chemical composition of richer DP steel (Table I).…”

Section: Softening Behavior Of Dp Steelsmentioning

confidence: 97%

Tempering of Martensite in Dual-Phase Steels and Its Effects on Softening Behavior

Hernández

Nayak

Zhou

2011

Metall Mater Trans A

167

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The isothermal and nonisothermal tempering of martensite in dual-phase (DP) steels was investigated mainly by analytical transmission electron microscopy, and the effect on softening behavior was studied. The isothermal tempering resulted in coarsening and spheroidization of cementite and complete recovery of laths. However, nonisothermal tempering manifested fine quasi-spherical intralath and platelike interlath cementite, decomposition of retained austenite, and partial recovery of laths. The distinct characteristic of nonisothermal tempering was primarily attributed to the synergistic effect of delay in cementite precipitation and insufficient time for diffusion of carbon due to rapid heating that delays the third stage of tempering. The finer size and platelike morphology of cementite coupled with partial recovery of lath resulted in reduced softening in nonisothermal tempering compared to severe softening in isothermal tempering due to large spheroidized cementite and complete recovery of lath substructure. The substitutional content of precipitated cementite in nonisothermal tempering was correlated to the richness of particular steel chemistry. Softening resistance during nonisothermal tempering was related to DP steel chemistry, i.e., Cr and Mn content. Fine cementite and less decomposed martensite in rich chemistry confer high resistance to softening compared to leaner chemistries, which indicated severe decomposition of martensite with coarser cementite.

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Section: Softening Behavior Of Dp Steelsmentioning

confidence: 97%

Tempering of Martensite in Dual-Phase Steels and Its Effects on Softening Behavior

Hernández

Nayak

Zhou

2011

Metall Mater Trans A

167

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“…Softening of DP steels by tempering using isothermal heat treatment has been investigated extensively. [9][10][11][12][13][14] It has been suggested that martensite in DP steels tempers similarly to martensite in fully quenched low-or medium-carbon steels. 10) On the other hand, little information is available on softening of steels during non-isothermal heat treatments, such as those experienced in the subcritical area of the HAZ during welding.…”

Section: Introductionmentioning

confidence: 99%

“…[9][10][11][12][13][14] It has been suggested that martensite in DP steels tempers similarly to martensite in fully quenched low-or medium-carbon steels. 10) On the other hand, little information is available on softening of steels during non-isothermal heat treatments, such as those experienced in the subcritical area of the HAZ during welding. Some initial work has pointed out that lean alloy materials welded with higher heat input and prestrained prior to welding show increased HAZ softening in gas metal arc welds, 6) and that martensite volume fraction affects the maximum reduction of tensile strength.…”

Section: Introductionmentioning

confidence: 99%

Effects of Heat Input and Martensite on HAZ Softening in Laser Welding of Dual Phase Steels

Xia¹,

Biro²,

Tian³

et al. 2008

ISIJ Int.

207

109

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Laser welds were made in three dual-phase (DP) alloys with ultimate tensile strengths ranging from 450-980 MPa and varying microstructures to investigate effects of heat input on heat affected zone (HAZ) softening. To compare the total heat transferred into the HAZ of all the welds, heat input was normalized using the Rosenthal Equation. It was found that HAZ softening experienced in a DP steel was a function of both martensite content and heat input. Maximum HAZ softening was proportional to the martensite content, and the heat input controlled the completion of softening. Material softening was normalized by martensite content, which showed that the contribution of martensite to material hardness from the three materials is the same; however the materials had different transformation kinetics.

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“…The common methods to strengthen and toughen carbon steels include heat treatment, adding alloy elements, and precipitation hardening. [4][5][6][7][8] However, the high cost of rare-earth elements, environmental pollution, and accurate control of heat treatment parameters hinder the further applications of these methods in industries. Therefore, a new approach to enhance the mechanical and tribological properties of carbon steels is needed.…”

Section: Introductionmentioning

confidence: 99%

Dry Sliding Wear Properties of Annealed Carbon Steels Matrix Composites by Nanosized TiC‐TiB₂ Particles

Zhang,

Wang,

Qiu

et al. 2023

Adv Eng Mater

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Herein, nanoparticle‐reinforced carbon steels are innovatively prepared through the use of TiC‐TiB2/Al master alloys. The effects of nanoparticles on the microstructure and wear performance of carbon steels are investigated. It is found that the addition of nanoparticles inhibits the Widmanstatten structure. Also, the nanoparticles promote the formation of pearlite with finer lamellar structure and reduce the grain size. During the liquid–solid and solid–solid phase transformations, the nanoparticles act as heterogeneous cores to improve the nucleation rate. For wear tests, the presence of nanoparticles enhances the wear resistance of carbon steels. Carbon steels with 0.02 wt% nanoparticles show the lowest wear volume loss rate under each test condition. The excellent wear performance is related to the high hardness of substrates, inhibiting dislocation movement due to the refined microstructure and nanoparticles, and withstanding the external loads by nanoparticles. The findings obtained in this work can provide a new approach to fabricate high‐wear‐resistant carbon steels.

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The tempering behavior of a plain carbon dual-phase steel

Cited by 17 publications

References 7 publications

Tempering of Martensite in Dual-Phase Steels and Its Effects on Softening Behavior

Tempering of Martensite in Dual-Phase Steels and Its Effects on Softening Behavior

Effects of Heat Input and Martensite on HAZ Softening in Laser Welding of Dual Phase Steels

Dry Sliding Wear Properties of Annealed Carbon Steels Matrix Composites by Nanosized TiC‐TiB₂ Particles

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The tempering behavior of a plain carbon dual-phase steel

Cited by 17 publications

References 7 publications

Tempering of Martensite in Dual-Phase Steels and Its Effects on Softening Behavior

Tempering of Martensite in Dual-Phase Steels and Its Effects on Softening Behavior

Effects of Heat Input and Martensite on HAZ Softening in Laser Welding of Dual Phase Steels

Dry Sliding Wear Properties of Annealed Carbon Steels Matrix Composites by Nanosized TiC‐TiB2 Particles

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Dry Sliding Wear Properties of Annealed Carbon Steels Matrix Composites by Nanosized TiC‐TiB₂ Particles