摘要
在Cr含量一定时,随着Cr/C减小,砂型浇注的过冷奥氏体铸态转变为屈氏体量逐渐增加,金属型则不易转变;当Cr/C≤4,砂型和金属型铸态试样均能得到全部的屈氏体。用砂型和金属型铸造时,加入微量铝可使含碳量在2.6～3.0％的中碳铸态材质得到屈氏体基体,并有较好的综合性能.
The amount of troostite transferred from undercooling austenite gradually increased as the Cr content was constant and the Cr/C ratio decreased when a sand mold was used.The transformation difficultly Occured, however, in a metal mold.When Cr/C≤4, the matrix of as-cast samples both from sand molds and from metal molds could completely transferred into troostite. The addition of traces of Al could make the materials containing C ranged from 2.6-3.0% obtain troostite matrix both in sand molds and in metal,sand the materials have good synthetic properties.
出处
《现代铸铁》
CAS
1989年第2期16-20,共5页
Modern Cast Iron
