Research progress and Q&P treatment prospect of medium manganese Fe-Mn-Al-C steel

doi:10.13251/j.issn.0254-6051.2025.03.038

Abstract

Abstract: The Fe-Mn-Al-C steel has become the development direction of lightweight and high strength steel for automotive applications due to its low density and excellent mechanical properties. Compared with high manganese steels with a conventional manganese content exceeding 20%, medium manganese lightweight steels have significant advantages in cost control and processing. Based on relevant research achievements at home and abroad, the effects of different alloying elements and precipitates on the microstructure and properties of the Fe-Mn-Al-C low-density steel, as well as the strengthening mechanisms and tensile properties of different types of low-density steels were deeply analyzed and summarized. In addition, based on the characteristics of Q&P process, it was proposed to use Q&P process to treat medium manganese low-density steel, and its application prospects were also discussed.

Key words: Fe-Mn-Al-C low-density steel, Q&P treatment, TRIP effect, strengthening mechanism

CLC Number:

TG142.1

Xu Pengfei, Zhang Hongbo, Nan Lingxin, Ma Tao, Gao Jianxin, Li Yungang. Research progress and Q&P treatment prospect of medium manganese Fe-Mn-Al-C steel[J]. Heat Treatment of Metals, 2025, 50(3): 237-243.

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