直接铸造成型导板的合金元素分布研究  

Research on Distribution of Alloy Elements in Guide Plate by Directly Cast Molding

作　　者：周建波[1] 张锡祯 常林林 李丁卯 

机构地区：[1]天津职业大学机电工程与自动化学院,天津300410 [2]天津机辆轨道交通装备有限责任公司技术开发部,天津300232

出　　处：《铸造技术》2014年第4期775-778,共4页Foundry Technology

摘　　要：对国内外铸造成型的热轧无缝钢管孔型控制用导板,进行了金相组织观察,测试了使用寿命;对基体和强化相中的合金元素,进行了X射线能谱分析和微区面扫描分析。结果表明:直接铸造成型导板的析出相中主要合金元素是Cr和C,Ni基本分布在基体中。Cr、C在析出相中的含量明显高于基体中的含量,说明铸造冷却过程中,Cr、C明显向析出相集聚。The microstructure was observed and the service life was tested for domestic and foreign guide plate. The alloy elements in matrix and reinforced phase of the guide plate were analyzed with the help of EDS and SEM. The results show that Cr and C are mainly alloy elements in the precipitated phase of direct casting molding guide plate, Ni is distributed in the matrix. The content of Cr and C element in the precipitated phase is significantly higher than that in the matrix. Cr and C are precipitated to reinforced phase of the guide plate in casting cooling process.

关 键 词：铸造成型 导板 合金元素 分布 

分 类 号：TG27[金属学及工艺—铸造]