摘要
针对钨渗铜W-7Cu加工的部件表面烧蚀异常问题,在返回后部件产品的舵面和护板位置取样,对样品烧蚀特征、微观组织、表面残骸、断口形貌和金相组织进行对比分析。结果表明,舵面位置的烧蚀更为严重,舵面和护板两者表面的推进剂残留物分布较多,断口形貌均以穿晶断裂和沿晶断裂为主,未见异常组织;经过金相和电镜分析,舵面位置的孔洞明显多于护板,两者均有一定程度的铜流失,能谱分析法显示铜含量具有不同梯度,舵面位置的铜析出更明显,并受到温度、时间和冲刷速度三种工况因素的综合作用。研究结论能为钨渗铜部件产品后续失效分析及质量控制提供依据。
Aiming at the phenomenon of abnormal ablation on the surface of W-7Cu infiltrated with tungsten and copper,samples were taken from the rudder surface and guard plate of returned part,and the ablative characteris-tics,microstructure,surface debris,fracture morphology and metallographic structure of samples were compared and analyzed.The results showed that rudder surface's ablation was more sever,both propellant residue on the surfaces were distributed,the fracture apperance was dominated by transgranular and intergranular fracture,no abnormal tissue was found;According to the results of metallographic and transmission electron microscope,the cavity of rudder surface is more than that of the guard plate,and copper leaks exist in both areas,energy spec-trum analysis showed that the copper content has different gradients,the copper precipitation at rudder surface was significant that affected by three kinds of working conditions including temperature,time and scour speed.The study conclusions can provide a basis for subsequent failure analysis and quality control of tungsten-impreg-nated coppergas rudder products.
作者
杜方鑫
赵丰显
孙晓霞
郭颖利
唐亮亮
张保红
DU Fangxin;ZHAO Fengxian;SUN Xiaoxia;GUO Yingli;TANG Liangliang;ZHANG Baohong(Wuhan City Polytechnic,Wuhan 430072,China;Hubei Sanjiang Aerospace Hongfeng Control Co.,Ltd,Xiaogan 432000,China;China University of Labor Relations,Beijing 100048,China;Advanced Technology&Materials Co.,Ltd,Beijing 100081,China)
出处
《粉末冶金工业》
CAS
北大核心
2024年第3期130-134,136,共6页
Powder Metallurgy Industry
基金
湖北省教育厅科技项目(No.B2018503)。
关键词
钨渗铜
部件
烧蚀表面
微观组织
铜析出
tungsten infiltrated copper
ablation surface
throat lining
copper precipitation
