06Cr18Ni11Ti管坯探伤与晶间腐蚀不合原因分析及改进措施  

Reason analysis and improvemet of the non-conformity of 06Cr18Ni11Ti tube blank in non-destructive testing and intergranular corrosion

作　　者：李本朋 张欣杰 魏瑞鹏 杨清凯 李徐刚 刘珈瑜 Li Benpeng;Zhang Xinjie;Wei Ruipeng;Yang Qingkai;Li Xugang;Liu Jiayu(Zhonghanshangda Superalloys Co.,Ltd.,Xingtai 054800,Hebei,China;Hebei Aerospace Superalloy Industry Technology Research Institute,Xingtai 054800,Hebei,China;Hebei Key Laboratory of Corrosion Resistant Alloy MaterialsXingtai 054800,Hebei,China;Hebei Engineering University,Handan 056000,Hebei,China)

机构地区：[1]中航上大高温合金材料股份有限公司,河北邢台054800 [2]河北省航空航天高温合金产业技术研究院,河北邢台054800 [3]河北省耐腐蚀合金材料重点实验室,河北邢台054800 [4]河北工程大学,河北邯郸056000

出　　处：《特钢技术》2024年第3期52-55,共4页Special Steel Technology

基　　金：院士合作重点单位项目;平台:河北省航空航天高温合金产业技术研究院;平台:河北省耐腐蚀合金材料重点实验室。

摘　　要：针对06Cr18Ni11Ti管坯探伤不合以及晶间腐蚀不合问题,采用光学显微镜和扫描电子显微镜对缺陷进行了检测和分析。结果表明:造成探伤不合与腐蚀开裂的原因是相同的,都是因为管坯中存在大量0.4~0.6 mm大尺寸链状TiN夹杂物团簇。通过控制Ti合金化过程中Ti含量、Al含量、炉渣成分,降低浇注温度,提高快锻机单道次压下量,有利于提高探伤、晶间腐蚀的合格率。In response to the issues of defect detection and intergranular corrosion non-compliance in 06Cr18Ni11Ti tube billets,optical microscope and scanning electron microscope were used to detect and analyze the de-fects.The results indicate that the reasons for the failure of non-destructive testing and corrosion cracking are the same,both of which are due to the presence of a large number of 0.4-0.6mm large-sized chain like TiN inclusion clusters in the tube blank.By controlling the Ti content,Al content,and slag composition during the Ti alloying process,reducing the pouring temperature,and increasing the single pass reduction of the fast forging machine,it is beneficial to improve the qualification rate of non-destructive testing and intergranular corrosion.

关 键 词：06Cr18Ni11Ti 管坯 探伤 晶间腐蚀 TiN夹杂物团簇 

分 类 号：TG142.15[一般工业技术—材料科学与工程]