【摘要】 研究了稀土La对45Cr2NiMoVSi钢的强度、硬度、塑性和冲击韧度的影响。在相同的热处理工艺条件下,分别加入3种不同含量的稀土La,与不添加稀土La的45Cr2NiMoVSi钢的力学性能进行对比。结果表明:稀土La加入量在适当的范围内可显著提高45Cr2NiMoVSi的力学性能,稀土La加入量为0.20%(质量分数)时,45Cr2NiMoVSi钢可获得最好的综合力学性能。更多还原

【Abstract】 Effect of rare earth La on the strength,hardness,ductility and impact toughness of 45Cr2NiMoVSi hot die steel is studied.The mechanical properties of 45Cr2NiMoVSi steel with three different contents of La are compared with those of the 45Cr2NiMoVSi steel without La addition under the same heat treatment process.The results show that strength,hardness,ductility and impact toughness of 45Cr2NiMoVSi steel increase significantly if the content of La is proper.When the content of La is 0.20wt%,the 45Cr2NiMoVSi steel has the best combination of mechanical properties.更多还原