Effect of Mn on Microstructure and Hardness of Ausenit-ferrite Transformation of Low Carbon Steel
-
摘要: 采用热膨胀仪、金相显微镜、扫描电镜、显微硬度计研究Mn对低碳钢中奥氏体向铁素体转变温度和凝固组织的影响。试验结果发现:随着Mn含量的提高,转变初始温度降低,转变区间变大;生成的铁素体晶粒尺寸变大;针状铁素体数量增加;凝固组织的显微硬度增加。Abstract: The effect of Mn on microstructure and hardness of austenit-ferrite transformation was studied by thermal dilatometer,metallographic microscope,scanning electron microscope (SET) and microhardness tester.The result show that higher Mn content leads to reduce austenite-ferrite transformation temperature,widen transformation region and consequently ferrite grain size becomes larger,the volume of acicular ferrite and microhardness of transformed structure increase.
-

计量
- 文章访问数: 194
- HTML全文浏览量: 27
- PDF下载量: 2
- 被引次数: 0