DZ40M合金叶片粘砂缺陷分析及改进措施  

Analysis and Improvement Measures of Burning-On Defect in DZ40M Alloy Blades

作　　者：刘国库 张海华 张玲 LIU Guo-ku;ZHANG Hai-hua;ZHANG Ling(Military Representative Bureau of Naval in Shenyang,Shenyang 110016,Liaoning,China;Shenyang Foundry Research Institute Co.,Ltd.,State Key Laboratory of Light Alloy Casting Technology for High-End Equipment,Shenyang 110022,Liaoning,China)

机构地区：[1]海军驻沈阳地区军事代表室,辽宁沈阳110016 [2]沈阳铸造研究所有限公司高端装备轻合金铸造技术国家重点实验室,辽宁沈阳110022

出　　处：《铸造》2022年第12期1565-1568,共4页Foundry

摘　　要：采用扫描电镜分析了DZ40M合金与刚玉型壳反应形成的粘砂缺陷,结果表明:合金中的C、Cr元素与型壳面层的α-Al_(2)O_(3)及活性SiO2发生界面化学反应,产生粉红色反应层。采用EC95粉作为型壳面层材料能减轻DZ40M合金和型壳的界面反应;CTA抑制剂能有效抑制DZ40M合金和型壳面层的界面反应。The burning-on defects of DZ40M alloy and fused corundum shell were analyzed by means of SEM and EDS.The results showed that C and Cr elements in the alloy reacted with α-Al_(2)O_(3) and active SiO2 in the shell first layer to produce pink reaction. EC95 shell can reduce the interface reaction between the DZ40M alloy and shell. CTA inhibitor can effectively inhibit the interface reaction between the DZ40M alloy and shell.

关 键 词：DZ40M合金 陶瓷型壳 粘砂 EC95粉 界面反应 

分 类 号：TG249[金属学及工艺—铸造]