精密铸造用DZ125合金返回料净化处理研究  

Purification of DZ125 Superalloy Revert

作　　者：解方良 骆合力[1] 李尚平[1] 王建涛[1] 

机构地区：[1]钢铁研究总院高温材料研究所

出　　处：《特种铸造及有色合金》2017年第8期875-877,共3页Special Casting & Nonferrous Alloys

摘　　要：利用真空水平连铸技术净化处理了100%的精密铸造DZ125合金返回料,制成合金锭。通过大样电解法测定了返回料母合金的夹杂物含量,分析了返回料母合金的化学成分、气体含量和微观组织。结果表明,真空连铸DZ125合金返回料母合金的大块夹杂物含量达到了新料水平,由平均每10kg含8.30mg降至每10kg含5.74mg夹杂物;化学成分、O、N气体含量、微观组织与新料基本一致,完全满足DZ125合金技术标准要求。The 100% DZ125 revert superalloy was purified into revert ingot by vacuum horizontal continuous casting（VHCC）.The inclusion level of revert ingot was determined by electrolysis.The chemical composition analysis,gas content and microstructure were also investigated.The results show that the content of bulky inclusions in vacuum casting DZ125 alloy ingot reaches the level of virgin alloy,which is reduced to 5.74mg/（10kg）from average 8.30mg/（10kg）.The chemical composition,oxygen and nitrogen content,and microstructure of the revert alloy exhibit little difference with the virgin alloy,which can fully meet the requirement of DZ125 alloy technical standard.

关 键 词：DZ125合金 真空水平连铸 高温合金返回料 夹杂物 

分 类 号：TG249.5[机械工程—精密仪器及机械] TG132.33[金属学及工艺—铸造]