Fe-Mn-Al-C系高Mn-Al轻质钢研究进展

Research progress of Fe-Mn-Al-C high Mn-Al lightweight steel

Fe-Mn-Al-C系轻质钢以其低密度和高强韧性在车辆、交通运输、航空航天和发电厂等零部件的结构材料应用领域中受到广泛关注。基于当前Fe-Mn-Al-C系轻质钢的研究成果及其表现出的优异性能,综述了Fe-Mn-Al-C系高Mn-Al轻质钢在成分设计、显微组织特征和力学性能以及应用性能等方面的研究进展,重点阐述了轻质钢强韧化机制、力学性能和应用性能特点,并结合目前国内外学者对Fe-Mn-Al-C系高Mn-Al轻质钢的最新研究成果进行了展望。该系轻质钢的强韧化机制与析出相(MC型碳化物、κ-碳化物、B2和DO 3粒子等)的析出机理及其对轻质钢强韧化机制的影响机理和析出相对该系钢的氧化性、腐蚀性和耐磨性等各项应用性能的作用机制是今后该系轻质钢的重要研究方向。开展析出相可控析出研究有助于突破新一代钢铁材料增强增韧技术瓶颈,加快其实际应用。

Fe-Mn-Al-C lightweight steel attracts wide attention in the application fields of structural materials for vehicles,transportation,aerospace and power plants due to its low density and high strength and toughness.Based on the current research achievements of Fe-Mn-Al-C lightweight steel and its excellent performance,the research progress of Fe-Mn-Al-C high Mn-Al lightweight steel in composition design,microstructure characteristics and mechanical properties as well as application properties was reviewed.The strengthening and toughening mechanism,mechanical properties and application properties characteristics of lightweight steel were emphatically described.Combined with the latest research results of scholars at home and abroad on Fe-Mn-Al-C high Mn-Al lightweight steel,the future research direction of this system lightweight steel was prospected.The strengthening and toughening mechanism of lightweight weight steel,the precipitation mechanism of precipitated phases(MC type carbide,κ-carbide,B2 and DO 3 particles,etc.),the influence mechanism on the strengthening and toughening mechanism of lightweight steel,and the action mechanism of precipitation to the oxidation,corrosion,wear resistance and other application properties of lightweight steel are the important research directions in the future.The research on controlled precipitation of precipitation phase can help break through the technical bottleneck of enhanced strengthening and toughening technology of new generation steel materials and accelerate its practical application.