摘要
用合金化和控制冷却速度的方法研制了一种新型铸态贝氏体钢,其化学成分为:0.4%～0.6%C,0.4%～0.6%Si,0.4%～1.0%Mn,P<0.01%,S<0.04%,Mo<0.4%,Cr<0.5%.Nb<0.1%,B<0.003%。用此钢浇注10mm×10mm×55mm试样和Φ200mm×6mm试验耙片。铸态下可以稳定得到以下贝氏体为主的金相组织。力学性能为:HRC40～50,a_k>20J/cm^2,对65Mn钢的相对耐磨系数为1.19,为挤压铸造生产铸态钢质耙片提供了新的材料,具有很大的经济意义和生产价值。
A new type of the as-cast bainite steel is developed in this paper by the method of alloying and controlling the cooling rate. The chemical composition of the steel is 0.4 %～0.6%C , 0.4%@～ 0.6%Si,0.4%～1.0%Mn,P<0.04%,S<0.04%,Mo<0.4%,Cr<0.%,Nb<0.1%,B<0.003%. The 10mm×10mm×55mm specimens and the 200mm diameter 6mm thickness harrow disk are made of the steel. The metallographic structure of them that is mainly acicular bainite is obtained steadily in the as-cast state. The mechanical properties of the steel are HRC 40～50,α_k>20J/cm^2. The relative abrasive resistance of this steel to 65Mn steel is 1.19. The researchment of this paper has provided harrow disk with squeeze casting and has the high economic significance and the important production value.
出处
《机械工程材料》
CAS
CSCD
1993年第6期6-9,共4页
Materials For Mechanical Engineering
