【摘要】 超级贝氏体由极细条状贝氏体铁素体与膜状残留奥氏体组成,具有优异的强度和韧性等。本文综合论述了高强度高韧性超级贝氏体钢近十年来的化学成分调整、显微组织及力学性能变化等方面的重要研究成果,重点阐述了碳含量与超级贝氏体钢的组织及性能的重要关系,分析了以调整碳含量为基础的成分改良以及相应的新工艺措施,为解决超级贝氏体钢性能的不足,提高其工业的实用性,提供有意义的理论和工艺支持。更多还原

【Abstract】 A new generation of super bainite with nanosized bainite plates separated by retained austenite films has awakened a great interest in recent years due to its excellent mechanical properties of both ultrahigh strength and toughness. The important research results of the super bainite on chemical composition optimization, microstructure and mechanical properties improvement in the past decade have been summarized and analyzed in this paper. The relationship between carbon content,microstructure and properties has been highlighted. The various processes are also considered to solve the problems of the super bainite. This paper provides the theoretical and technical support for future commercial application of the super bainite steel.更多还原