摘要
为了提高冶金设备用铜质传热零部件的耐磨性和抗氧化性能,对纯铜进行了925℃深层渗铝12h+925℃固溶1.5h+300℃时效处理3 h,研究了其金相组织特征及其耐磨性和抗热疲劳性能。试验结果表明:处理后试样表层组织主要由β′相组成,与纯铜试样相比,其磨粒磨损抗力和粘着磨损抗力分别是纯铜的2.12倍和22.59倍,930℃循环加热冷却250次后,其热疲劳质量损失率仅为纯铜的9%。
In order to improve the wear resistance and thermal fatigue resistance of metallurgical equipment copper heat transfer components, the pure copper samples were solid solution treated at 925 ℃ for 1.5 hours and aging heat treated at 300℃ for 3 hours after deeply aluminized at 925℃ for 12 hours. The microstructures and properties of the samples were studied. The results show that the microstructure of the solid solution and aging heat treated after deeply aluminized copper surface is β′, the abrasive wear resistance and adhesive wear resistance of solid solution and aging heat treated sample are the 2.12 times and 22.59 times of that of the pure copper sample respectively. The ratio of weightlessness of the thermal fatigue sample subjected to solid solution and aging heat treatment is 9 percents of that of pure copper sample after heated at 930℃ and cooled for 250 times.
出处
《表面技术》
CAS
CSCD
2008年第1期48-50,共3页
Surface Technology
关键词
深层渗铝
固溶时效
耐磨性
热疲劳
Deeply aluminizing
Solid solution and aging heat treatment
Wear resistance
Thermal fatigue
