Microstructure, crystallography, mechanical and damping properties of a low-carbon bainitic steel austempered at various temperatures

Yao, Chunxia; Lan, Huifang; Tao, Zhen; Qi, Min; Du, Linxiu

doi:10.1007/s10853-022-07701-y

J Mater Sci

2022

DOI: 10.1007/s10853-022-07701-y

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Microstructure, crystallography, mechanical and damping properties of a low-carbon bainitic steel austempered at various temperatures

Chunxia Yao

Huifang Lan

Zhen Tao

et al.

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Cited by 3 publications

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Review on Heat Treatment and Surface Modification Technology of High‐Strength Bainite Steels

Zhao,

Liu,

Tian

et al. 2024

steel research int.

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Bainite steels with high strength, high toughness, and excellent wear resistance are gradually used in railway crossing, rail and wind power bearing, and other fields. The rapid development of modern industry has made the service environment of bainite steel in the heavy industry more and more harsh, which requires not only good overall performance of bainite steel matrix but also excellent surface properties. A lot of research work has been carried out to improve the properties of the bainite steel matrix and surface. In this review, the development of heat treatment technology of high‐strength bainite steels is introduced, including austempering above and below martensite starting temperature, continuous cooling, and multistep austempering processes. Afterward, the surface modification technology of high‐strength bainite steel is summarized emphatically, including carburizing, surface alloying, laser cladding, and integrated strengthening technology. Finally, the future research direction of high‐strength bainite steel is prospected based on the current research status and application performance requirements.

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Review on Heat Treatment and Surface Modification Technology of High‐Strength Bainite Steels

Zhao,

Liu,

Tian

et al. 2024

steel research int.

View full text Add to dashboard Cite

show abstract

Effect of heat input on microstructural evolution and impact toughness in dissimilar weld metals between medium Mn and V-microalloyed steel

Tao,

Liu,

et al. 2025

Alexandria Engineering Journal

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Understanding the Effect of Austempering Temperature on the Crystallographic Features and Mechanical Properties of Low-Carbon Bainitic Steel

Wu,

Yu,

Wang

et al. 2024

Crystals

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The effect of austempering temperature on crystallographic features and mechanical properties is investigated in low-carbon bainitic steel, focusing on the relationship between microstructure and mechanical properties. After isothermal holding at, above, and below martensite start (MS) temperatures and tempering, a mixed microstructure of martensite/bainite and martensite/austenite (M/A) constituents is obtained. The fraction of M/A constituents increases as the austempering temperature increases, while the density of block boundaries decreases. The instantaneous work hardening rate exhibits continuous decay without a notable transition because of the retained austenite in the M/A constituents. The toughness decreases with increasing austempering temperature, which is related not only to the fraction of M/A constituents but also to the density of block boundaries. Isothermal treatment below the MS temperature enables the formation of structures with fewer M/A constituents and high-density block boundaries, through which excellent toughness can be achieved.

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Microstructure, crystallography, mechanical and damping properties of a low-carbon bainitic steel austempered at various temperatures

Cited by 3 publications

References 50 publications

Review on Heat Treatment and Surface Modification Technology of High‐Strength Bainite Steels

Review on Heat Treatment and Surface Modification Technology of High‐Strength Bainite Steels

Effect of heat input on microstructural evolution and impact toughness in dissimilar weld metals between medium Mn and V-microalloyed steel

Understanding the Effect of Austempering Temperature on the Crystallographic Features and Mechanical Properties of Low-Carbon Bainitic Steel

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