ZL205A合金回转体铸件树枝状偏析缺陷研究  

Study on Dendritic Segregation Defects in ZL205A Alloy Rotator Castings

作　　者：杜旭初[1] 洪润洲[1] 陈邦峰[1] 樊振中[1] 李大奎[1] 潘俊杰[1] 

机构地区：[1]中国航空工业集团公司北京航空材料研究院,北京100095

出　　处：《热加工工艺》2015年第7期125-128,共4页Hot Working Technology

摘　　要：以生产过程中ZL205A合金回转体铸件在射线探伤检测时在射线底片上发现树枝状偏析缺陷为研究对象,研究了树枝状偏析缺陷处力学性能、断口形貌、微观组织、化学成分及熔点等。根据研究结果探讨了树枝状偏析缺陷产生的机理,并提出了预防及防止树枝状偏析缺陷的措施。Taking ZL205A alloy rotator casting dendritic segregation defect found in X-ray radiographic examination as research object, the mechanical properties, fracture morphology, chemical composition and microstructure of the samples were studied. According to the results of the study, the mechanism of dendritic segregation defects were discussed, and the measures for preventing the dendritic segregation defects in production wcrc put forward.

关 键 词：ZL205A 树枝状偏析 铸件 机理 预防措施 

分 类 号：TG290.6[金属学及工艺—铸造]