贝氏体耐磨钢的应用研究

贝氏体组织具有高的强韧性和耐磨性，是一种很好的抗磨材料组织结构．本文综述了贝氏体相变的最新研究进展．随着先进技术和先进仪器出现，人们对贝氏体相变与贝氏体组织基础理论的研究也不断深入，表现在对贝氏体微观超精细结构的认识，即在黑金属和有色金属合金的下贝体组织中发现了超亚单元．以往贝氏体钢中添加Mo，Ni等贵重合金元素以及等温淬火工艺，才使贝氏体钢用作抗磨材料成为可能，基于贝氏体相变机理研究的长足进步，先后开发出奥氏体一贝氏体双相钢、马氏体-贝氏体双相钢、共晶体增强奥氏体一贝氏体钢(ABEG钢)等新型贝氏体抗磨钢。

APPLICATION RESEARCH ON BAINITIC WEAR- RESISTANT STEELS

Bainite microstructure possesses higher strength-toughness and wear resistance, which is a kind of very good wear resistant material microstructure~(1]). This paper Overviewed recent research of bainite transformation. People had deeper acknowledges on bainite transformation and bainitic microstructure basic theories with advanced technologies and equipments, showing on acknowledges on Ultra-fine structure of bainite~(2]), namely found ultra fine unite in the bainitic microstructures of metals and non-metallic alloys. Formerly, only Mo, Ni ect were added into steel. These costly alloy elements to bainitic steels and isothermal quenching processing made bainitic steels as wear resistant materials possible. Because of the considerable progress in the research of bainite transformation mechanism, people developed some new kinds of wear resistant bainitic steels continually such as austenic-bainitic steels, martensitic-bainitic steels and austenitic-bainitic steels with eutectic enhancement body, and so on.