摘要
为了获得铸态高锰钢,试验了降碳、快冷、改性、改性与快冷结合生产铸态高锰钢的工艺。通过对试验结果对比分析,认为改性与快冷结合工艺同时满足了成份浓度起伏和结晶过冷的两个冶金动力学条件,能够净化钢液、提高过冷,改变奥氏体的等温转变曲线,其铸态微观组织具有细化和固溶强化的奥氏体基体、及基体上适量弥散分布球团状碳化物和晶界上块状分布不连续的碳化物。结果表明,使用该工艺能够生产优质铸态高锰钢,而且综合性能好、成本低廉。
In order to obtain the as-cast high manganese steel （Hadfield steel）, the making technology of this kind of steel is tested by use of decreasing contents of carbon, rapidly cooling, modification, combination of modification and rapidly cooling. Through the comparisons and analysis to the test results, the combined technology of modification and rapidly cooling meets two metallurgical dynamics conditions of the composition gradient and super-cooling of crystal. This technology can cleanse molten steel, increase super-cooling, and change curves of austenitic isothenmal transformation. The microstructure of the as-cast HM steel possesses austenitic matrix of fineness and the solid solution strengthening. The carbide is distributed by the spheroidal state in the matrix and by the discontiguous lump in the interphase. The results show that high-quality HM steels can be produced by this technology and the HM steel possesses good synthetical properties and low cost.
出处
《矿山机械》
北大核心
2008年第10期26-29,共4页
Mining & Processing Equipment
关键词
改性与快冷
铸态高锰钢
微观组织
Modified and rapid-cooling
As-cast high manganese steel
Microstructure
作者简介
牛显明，男，1960年生，大学本科，高级工程师,研究方向：耐磨和减磨材料的制备技术
