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A study on the investigation of the microstructure of SKD61 steel after selected quenching and tempering processes

Tran Phap Dong

School of Mechanical Engineering, Hanoi University of Science and Technology, Ha Noi, Vietnam

School of Mechanical Engineering, Vietnam Maritime University, Hai Phong, Vietnam

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and

Nguyen Duc Toan

School of Mechanical Engineering, Hanoi University of Science and Technology, Ha Noi, Vietnam

E-mail Address: toan.nguyenduc@hust.edu.vn

Corresponding author.

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https://doi.org/10.1142/S0217984923400225Cited by:5 (Source: Crossref)

This article is part of the issue:

SPECIAL ISSUE ON COMPOSITES, NANOMATERIALS, MECHANICAL TESTS AND MECHANICS (Proceedings of 3rd Nanomaterials and Advanced Composites) - (Part III)
Guest Editor: Yun-Hae Kim

Abstract

This paper presents the research results on the microstructure changes of SKD61 steel after quenching at 1050 $^{\circ}$ C and then tempering at 580 $^{\circ}$ C. After quenching and tempering, the microstructure of this steel is determined by various moieties, including tempering martensite, residual austenite, and carbides dispersed within the matrix. Scanning electron microscopy, X-ray, and energy-dispersive spectroscopic analysis reveal that the presence of the carbides Cr₇C₃, Mo₃C₂ and MoC determines the mechanical properties of steel during high-temperature operations.

Keywords:

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