Low and Medium Carbon Advanced High-Strength Forging Steels for Automotive Applications

Koh-ichi Sugimoto; Tomohiko Hojo; Ashok Kumar Srivastava

doi:10.20944/preprints201910.0337.v1

Preprint Review Version 1 Preserved in Portico This version is not peer-reviewed

Version 1 : Received: 28 October 2019 / Approved: 29 October 2019 / Online: 29 October 2019 (10:59:30 CET)

This paper presents the microstructural and mechanical properties of low and medium carbon advanced high-strength forging steels developed based on the third generation advanced high-strength sheet steels, in conjunction with those of conventional high-strength forging steels. Hot-forging followed by an isothermal transformation process considerably improved the mechanical properties of the forging steels. The improvement mechanisms of the mechanical properties were summarized by relating to the matrix structure, the strain-induced transformation of metastable retained austenite and/or a mixture of martensite and austenite.

advanced high-strength forging steel; hot-forging; microstructure; retained austenite characteristics; mechanical properties; applications

MATERIALS SCIENCE, Metallurgy

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Low and Medium Carbon Advanced High-Strength Forging Steels for Automotive Applications

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