第二相粒子强化钢铁材料的研究进展

摘要：第二相强化是一种快捷有效的钢材强化方式。由于大多数学者局限于第二相粒子强化钢铁材料机械性能的宏观定性研究，使得这项技术至今未能投入到工业化生产中，因此学者们开始专研于纳米粒子在钢液中的微观受力情况和理论研究并对纳米粒子的分散性进行了定量表征，获得了突破性进展。概述了利用第二相粒子强化钢铁材料的研究进展，分析了第二相粒子对钢材宏观力学性能的影响以及细化钢晶粒的基本理论，结合第二相粒子的处理方式和分散方法，指明了面临的问题并提出了新的实验思路。

Research progress of strengthened iron and steel with second phase particle

The second phase strengthening is a fast and effective way of steel strengthening. Because most scholars are limited to the macroscopic qualitative research of the mechanical properties of steel material strengthened by second phase particles, this technology has not been put into industrial production so far. Therefore, scholars began to study the micro stress and theoretical research of nanoparticles in the molten steel, and the dispersion of nanoparticles was quantitatively characterized, and made a lot of achievements. This paper summarizes the research status of the second phase particle reinforced steel materials. The influence of the second phase particles on the macro mechanical properties of steel and the basic theory of refining steel grains are analyzed. Combined with the method of obtaining the second phase particles and the way of dispersion, the existing problems are pointed out and new experimental ideas are put forward.