硅元素对Fe-(4.5～7.0)%Si高硅钢组织和性能的影响

Influence of Silicon on Microstructure and Mechanical Properties of Fe-(4.5-7.0)%Si High-silicon Steel

通过Axio Imager金相显微镜考察4.5％～7.0％硅（质量分数）对高硅钢材料组织形貌的影响,并利用Fe-6.5％Si高硅钢薄板制备方法对其进行轧制,通过DDL50电子万能试验机对阶段产品进行力学性能测试.结果证明,硅含量为5.58％的高硅钢在实验硅含量区间内存在最大延伸率及最小铸态组织晶粒尺寸.

An investigation about the influence of 4. 5%--7.0% Si on microstructure and mechanical properties of high-silicon steel was presented. SEM was adopted to take an observation towards microstructure during fabrica tion, and DDLS0 electronic universal testing machine was applied into the detection of tensile curves. The results show that silicon steel with 5.58% Si provides the maximum elongation and minimum grain size as cast.