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高锰铝青铜焊缝在3.5%NaCl溶液中的空蚀行为
闫永贵1, 马力1
海洋腐蚀与防护国防科技重点实验室,洛阳船舶材料研究所青岛分部
摘要:
利用磁致伸缩空蚀实验装置对高锰铝青铜焊缝在质量分数为3.5%NaCl水溶液中的空蚀行为进行了研究。结果表明,焊接金属的抗空蚀性能明显高于母材,焊缝金属的空蚀累积失重及失重率均约为母材的1/4。SEM空蚀形貌分析表明,母材的空蚀破坏比焊缝金属严重得多,导致空蚀破坏的裂纹萌生于晶界。
关键词:  高锰铝青铜焊缝  钨极氩弧焊(TIG)  空蚀
DOI:
分类号:
基金项目:国防基金重点项目
Cavitation erosion of welding seam of Cu12Mn8Al3Fe2 Ni alloyin NaCl solution
Abstract:
Cavitation erosion of welding seam Cu12Mu8Al3Fe2Ni alloy in 3.5% NaCl solusion was studied by magnet to strictive vibratory device. Results showed that the seam of the alloy was more resistant to the corrosion, and the mass loss was about 1/4 of that in parent metal. SEM observation revealed that the corrosion in parent metal initiated at the phase boundaries between the seam and the base.
Key words:  as-welded Cu12Mu8Al3Fe2Ni alloy  Tungsten inert gas welding (TIG)  cavitation erosion
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