Carbides precipitation and their evolution of Cr15Co10Mo5-alloyed heat-resistant bearing steel after tempering at different temperatures

Xiao, Mao-guo; Lü, Xin-yang; Li, Donghui; Li, Shaohong; Zhao, Kun; Yang, Maosheng

doi:10.1007/s42243-019-00286-y

Cited by 9 publications

(3 citation statements)

References 25 publications

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“…Thus, the value of A can be calculated as 2.673×10 15 . Based on the analysis and obtained values above, the constitutive equations of the studied steel can be described by Equations ( 10) and (11):…”

Section: Peak Stress Constitutive Equationmentioning

confidence: 99%

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Thermomechanical behaviour modelling and microstructure evolution of high Cr–Co–Mo aerospace bearing steel

Tang

Zhang

Yue

et al. 2023

Materials Science and Technology

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The microstructure evolution and hot-compressive behaviour of high Cr–Co–Mo bearing steel under different deformation conditions were investigated by dynamic recrystallisation (DRX) kinetics analysis and simulation. The results showed that the thermal deformation parameters and carbide dissolution have a great influence on the rheological properties and microstructure. The flow stress decreases with the increase of temperature and the decrease of strain rate. The grain boundary pinning effect is weakened by the dissolution of carbides into the matrix, resulting in the rapid growth of DRX grains. The processing map of high Cr–Co–Mo bearing steel was divided into five regions, and the most suitable processing parameters can be defined as the temperature range of 1000–1070°C and strain rate range of 0.01–0.003 s−1.

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Section: Peak Stress Constitutive Equationmentioning

confidence: 99%

“…In addition, the effect of morphology and distribution of carbides, intermetallic compounds, and martensite in strengthening mechanisms has been determined in the ref. [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Thermomechanical behaviour modelling and microstructure evolution of high Cr–Co–Mo aerospace bearing steel

Tang

Zhang

Yue

et al. 2023

Materials Science and Technology

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“…As shown in Refs. [23,27,34,38], the precipitation behavior of such steels is more closely related to the temperature and time of tempering, rather than to the solid solution temperature. In the present study, at a lower solid solution temperature, there are more undissolved secondary phases, which may have a greater effect on the number and size of nanoprecipitates during tempering.…”

Section: Strengthening and Toughening Mechanismmentioning

confidence: 99%

Obtaining Excellent Mechanical Properties in an Ultrahigh-Strength Stainless Bearing Steel via Solution Treatment

Zheng,

Zhong,

Wang

et al. 2023

Metals

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A novel versatile ultrahigh-strength stainless bearing steel was prepared by first solution treating the steel at temperatures between 1000 °C and 1100 °C for 1 h, followed by performing cryogenic treatment at −73 °C for 2 h, and tempering at 500 °C for 2 h, with the cryogenic and tempering treatments being repeated twice. The microstructures were characterized using multiscale techniques, and the mechanical properties were investigated using tensile testing, as well as via Rockwell hardness and impact toughness measurements. Tensile strength was found to be independent of solution temperature, with a value of about 1800 MPa. In contrast, yield strength decreased from 1530 MPa to 1033 MPa with increasing solution temperature, while tensile elongation increased from 15.3% to 20.5%. This resulted in an excellent combined product of tensile strength and elongation for steels initially treated at 1080 °C and 1100 °C, with values of 33.9 GPa·% and 37.0 GPa·%, respectively. Furthermore, the steels showed excellent impact toughness, increasing from 37.0 J to 86.2 J with increasing solution temperature. The microstructural and mechanical investigations reveal that the excellent mechanical properties and impact toughness are related to three factors, namely (i) a transformation-induced plasticity effect, mainly attributed to a high volume fraction of retained austenite, (ii) a high strengthening capacity arising from a high dislocation density, and (iii) a synergistic effect due to cobalt additions and the nanoprecipitation of M2C and M6C carbides.

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Relationship between martensite microstructure and ductility of H13 steel from aspect of crystallography

Zhu

Zhang

Xie

2021

J. Iron Steel Res. Int.

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Carbides precipitation and their evolution of Cr15Co10Mo5-alloyed heat-resistant bearing steel after tempering at different temperatures

Cited by 9 publications

References 25 publications

Thermomechanical behaviour modelling and microstructure evolution of high Cr–Co–Mo aerospace bearing steel

Thermomechanical behaviour modelling and microstructure evolution of high Cr–Co–Mo aerospace bearing steel

Obtaining Excellent Mechanical Properties in an Ultrahigh-Strength Stainless Bearing Steel via Solution Treatment

Relationship between martensite microstructure and ductility of H13 steel from aspect of crystallography

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