Design of a low-alloy high-strength and high-toughness martensitic steel

Zhao, Yutao; Xue-ping, Ren; Yang, Wenchao; Zang, Yue

doi:10.1007/s12613-013-0791-7

Cited by 8 publications

(2 citation statements)

References 16 publications

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“…%Ni (less than the Ni content in Table 1) and 1.2 wt. %Si has been designed by present authors [26] .The tensile strength and V notch impact toughness of this designed steel after tempering at 230 °C were 1550 MPa and 91.5 J, respectively [26] . Compared with mechanical properties listed in Table 1，the impact toughness greatly increased with little decrease in tensile strength.…”

Section: Introductionmentioning

confidence: 95%

Effect of tempering on microstructure and mechanical properties of 3Mn-Si-Ni martensitic steel

Zhao

Xue-ping

et al. 2018

Materials Science and Engineering: A

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Section: Introductionmentioning

confidence: 95%

Effect of tempering on microstructure and mechanical properties of 3Mn-Si-Ni martensitic steel

Zhao

Xue-ping

et al. 2018

Materials Science and Engineering: A

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“…To achieve superior comprehensive properties, alloy design is very important. For example, low carbon content (<0.10wt%) is used for ensuring good weldability, Cr, Mo, and Ni for improving hardenability, microalloying elements (Nb, V, and Ti) for thermomechanical processing, and Cu for corrosion resistance and precipitation strengthening [4][5]. Traditionally, quenching and tempering (Q&T) processing is used for producing HSLA steels.…”

Section: Introductionmentioning

confidence: 99%

Determining role of heterogeneous microstructure in lowering yield ratio and enhancing impact toughness in high-strength low-alloy steel

Gao

et al. 2021

Int J Miner Metall Mater

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Here we present a novel approach of intercritical heat treatment for microstructure tailoring, in which intercritical annealing is introduced between conventional quenching and tempering. This induced a heterogeneous microstructure consisting of soft intercritical ferrite and hard tempered martensite, resulting in a low yield ratio (YR) and high impact toughness in a high-strength low-alloy steel. The initial yielding and subsequent work hardening behavior of the steel during tensile deformation were modified by the presence of soft intercritical ferrite after intercritical annealing, in comparison to the steel with full martensitic microstructure. The increase in YR was related to the reduction in hardness difference between the soft and hard phases due to the precipitation of nano-carbides and the recovery of dislocations during tempering. The excellent low-temperature toughness was ascribed not only to the decrease in probability of microcrack initiation for the reduction of hardness difference between two phases, but also to the increase in resistance of microcrack propagation caused by the high density of high angle grain boundaries.

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Effect of lower bainite/martensite/retained austenite triplex microstructure on the mechanical properties of a low-carbon steel with quenching and partitioning process

Gao

et al. 2016

Int J Miner Metall Mater

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Design of a low-alloy high-strength and high-toughness martensitic steel

Cited by 8 publications

References 16 publications

Effect of tempering on microstructure and mechanical properties of 3Mn-Si-Ni martensitic steel

Effect of tempering on microstructure and mechanical properties of 3Mn-Si-Ni martensitic steel

Determining role of heterogeneous microstructure in lowering yield ratio and enhancing impact toughness in high-strength low-alloy steel

Effect of lower bainite/martensite/retained austenite triplex microstructure on the mechanical properties of a low-carbon steel with quenching and partitioning process

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