Analysis on X-ray flaw detection stripe of tungsten infiltrated copper used in gas rudder
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摘要: 以燃气舵用钨渗铜（W-7Cu）为研究对象，通过观察和检测X射线探伤底片、金相组织、断口显微形貌及力学性能，对产品在X射线探伤过程中出现的条纹现象进行分析。结果表明，燃气舵用钨渗铜X射线探伤出现的条纹现象由材料的组织结构和工艺特点所决定，条纹区域的组织属于钨渗铜材料的正常组织，不存在孔洞、裂纹和渗铜不均等结构缺陷；产品条纹区域的性能指标满足技术要求，与材料无条纹区域的性能无显著差别；提出了对燃气舵用钨渗铜X射线探伤进行分级的建议。Abstract: The stripe phenomenon of the tungsten infiltrated copper used in gas rudder (W-7Cu) during the X-ray flaw detection was analyzed by the observation and detection of the X-ray flaw detection negative, metallographic structure, fracture microstructure, and mechanical properties. The results show that, the stripe phenomenon during the X-ray flaw detection is caused by the structure and technological features of the tungsten infiltrated copper materials. The structure in the stripe region is the normal structure of the tungsten infiltrated copper materials without the structural defects of holes, cracks, and uneven infiltrated copper. The product properties in the stripe region meet the technical requirements, and there is no significant difference between the strip region and the non-striped region. The suggestion of grading the X-ray flaw detection for tungsten infiltrated copper used in gas rudder is proposed.
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图 2 燃气舵用钨渗铜产品射线探伤图
Figure 2. X-ray flaw detection diagram of the tungsten infiltrated copper products used in gas rudder
图 3 燃气舵用钨渗铜产品的探伤位置示意图
Figure 3. Schematic diagram of the flaw detection position for the tungsten infiltrated copper products used in gas rudder
图 4 燃气舵用钨渗铜产品取样位置示意图
Figure 4. Schematic diagram of sampling position for the tungsten infiltrated copper products used in gas rudder
图 5 钨渗铜产品不同区域金相组织：（a）A位置；（b）B位置；（c）C位置
Figure 5. Metallographic structure of the tungsten infiltrated copper products in the different regions: (a) position A; (b)position B; (c) position C
图 6 钨渗铜产品不同区域显微组织形貌：（a）A位置；（b）C位置
Figure 6. Microstructure of the tungsten infiltrated copper products in the different regions: (a) position A; (b) position C
图 7 钨渗铜产品不同区域800℃拉伸曲线：（a）D位置；（b）C位置
Figure 7. Tensile curves of the tungsten infiltrated copper products in the different regions: (a) position D; (b) position C
图 8 钨渗铜产品不同区域800℃拉伸断口形貌：（a）D位置；（b）C位置
Figure 8. Tensile fracture of the tungsten infiltrated copper products in the different regions: (a) position D; (b) position C
表 1 钨渗铜产品性能参数
Table 1. Product performance parameters of the tungsten infiltrated copper materials
Cu质量分数/% 钨骨架相对密度/% 钨渗铜材料密度/(g·cm-3) 钨渗铜材料相对密度/% 9.0 81.3 17.3 98.6 
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表 2 钨渗铜产品不同区域密度测量值
Table 2. Density data of the tungsten infiltrated copper products in the different regions
试样编号 区域 密度/(g·cm-3) 1# A 17.36 2# B 17.33 3# C 17.27
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表 3 钨渗铜产品不同区域能谱分析结果
Table 3. EDS analysis results of the tungsten infiltrated copper products in the different regions
位置 Cu质量分数/% W质量分数/% 有条纹区〔A位置） 6.14 93.86 无条纹区〔C位置） 9.15 90.85
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表 4 钨渗铜产品不同区域力学性能试验结果
Table 4. Mechanical properties of the tungsten infiltrated copper products in the different regions
区域 试样编号 室温抗拉强度/MPa 800 ℃抗拉强度/MPa 实际值 平均值 实际值 平均值 无条纹区（C位置） C-1 730 290 C-2 720 728 290 290 C-3 734 290 有条纹区（D位置） D-1 720 285 D-2 729 726 280 283 D-3 730 285
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