新一代节约型高性能结构钢的研究现状与进展

Current Status and Progress on the Development of Cost-Saving and High Performance Structural Steels

我国钢铁产业目前正面临资源匮乏,环境和自然生态不堪重负等严重问题,开发合金元素用量更低、力学性能更高、使用寿命更长的节约型高性能结构钢是解决我国钢铁工业可持续发展问题的主要途径。综述了以超快速冷却为核心的新一代TMCP工艺和以薄带铸轧为代表的"近终成形"技术的相关冶金学原理,重点介绍了它们在开发新一代节约型高性能结构钢产品中的应用和进展,指出了这些新技术在我国的应用前景。

China＇s Iron and Steel industry is facing serious environmental and ecological problems, which can be mostly solved by developing and widely applying cost-saving and high performance structural steels with lower consumption of alloying elements, better mechanical properties and longer service life. In the present paper, the metallurgical principles of new- generation TMCP （thermal mechanical controlled processing） based on ultra fast cooling and ＂near net shape＂ forming technology including strip casting were described. The development of the newest cost-saving and high performance structural steels by applying these advanced technologies has been summarized.