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采用热等静压加工工艺制备了W/Al复合材料,采用超声C扫描(UTC-Scanning)无损检测技术和扫描电镜(SEM)研究了热等静压态材料与经过挤压、锻造变形加工工艺后的复合材料的微观组织结构。首先,利用C扫描对材料内部存在的偏聚组织进行定位,然后利用SEM对样品进行解剖观察分析。二者的实验结果表明,C扫描技术能够实现对W/Al复合材料内部偏聚组织的精确定位。研究表明热等静压态材料组织结构整体上较为均匀,但会在局部有主要成分为基体合金2024 Al的团簇状偏聚组织存在;挤压变形加工有利于均匀化W/Al复合材料,减少团簇状偏聚组织,但在材料内部出现沿挤压方向分布的条带状组织结构;锻造加工能够基本上消除材料中存在的团簇状偏聚组织结构,并减小条带状组织的宽度,使W/Al复合材料的组织结构更加均匀。
The W / Al composites were prepared by hot isostatic pressing (HIP) process. The hot isostatic compaction materials were investigated by non-destructive testing with UTC-Scanning and scanning electron microscopy (SEM) After the composite material microstructure. Firstly, the C-scan was used to locate the segregated tissue that existed inside the material, and then the samples were analyzed by SEM. The experimental results show that the C-scan technology can realize the precise positioning of the segregation in W / Al composites. The results show that the microstructure of the HIPs is uniform, but there are some cluster-like aggregates of 2024 Al in the matrix. The extrusion deformation process is beneficial to the homogenization of the W / Al composites, Reduce the cluster-like segregation of the organization, but appear in the material along the extrusion direction of the strip-like organizational structure; forging process can basically eliminate the material cluster segregation of the organizational structure, and reduce the strip of tissue The width of the W / Al composite structure more uniform.