Exploring the Strengthening Effect of Carbide Precipitation in Fe-18Mn-2Cr-1C-4Al(wt.%) Lightweight Steel

• Published in: Metallography, microstructure, and analysis microstructure, and analysis, 2022-10, Vol.11 (5), p.704-710
• Main Authors: Zheng, Zhibin, Yang, Haokun, Shatrava, A. P., Yang, Yi, Long, Jun, Zheng, Kaihong
• Format: Article
• Language: English
• Subjects: Carbides; Characterization and Evaluation of Materials; Chemistry and Materials Science; Heat treatment; Lightweight; Manganese; Materials Science; Mechanical properties; Metallic Materials; Nanotechnology; Peer-Reviewed Paper; Precipitation hardening steels; Strengthening; Structural Materials; Surfaces and Interfaces; Tensile tests; Thin Films; Wear resistance; Yield strength; Yield stress
• ISSN: 2192-9262; 2192-9270
• DOI: 10.1007/s13632-022-00889-0

The Fe-18.4Mn-2.1Cr-1.3C-4Al (wt.%) steel was designed for lightweight application purpose with comprehensive advantages of low density, wear resistance, and high strength. Further exploring of the mechanical properties, especially the yield strength influenced by the aging treatments (300 °C and 500 °C), needs more investigation. The precipitated carbides observations and tensile tests, after specific solution and aging treatments, were carried out to reveal that the Fe(Mn) 3 C carbide precipitation contributed up to 111 MPa strengthening effect on yield strength with 300 °C aging heat treatment. The present study pointed out that tailor-made solution and aging treatments processes to achieving further strength improvement, especially for yield stress.