一种低合金高强高韧铸钢组织与性能研究

Study on Microstructure and Property of Low Alloy High Strength and Toughness Steel

高强韧低碳低合金铸钢具有优良的力学和物理化学性能使得其具有巨大的发展潜力和经济效益。通过合理的成分设计及热处理工艺，获得制备工艺简单、强韧性高、成本低、污染小，具有良好低温韧性、焊接性的低合金铸钢已成为一项技术问题。针对一种奥氏体-马氏体高耐蚀低合金高强度铸钢，通过成分与热处理的良好匹配，使合金达到优良的强塑性。对合金组织和性能进行统计分析，找到了影响合金力学性能的主要因素，为大批量制备该合金打下坚实的基础。

High strength low-carbon low-alloy cast steel with excellent mechanical and physical chemical properties has great potential for development and economic benefits. Through reasonable composition design and heat treatment, getting low alloy steel with sim- ple preparation process, high strength and toughness, low cost, less pollution, good low- temperature toughness, weldability, has become a technical problem. This paper is directed to a successful development of austenite-martensite high corrosion-resistant high-strength steel, by heat treatment and a good match with ingredients to make steel to achieve excellent strength and ductility.