驱动气体温度对冷喷涂6061铝合金涂层组织和性能的影响
Effect of Driving Gas Temperature on Microstructure and Properties of Cold Sprayed 6061 Aluminum Alloy Coating
摘 要
选用4种驱动气体温度(350,400,450,500 ℃)在ZM6镁合金基体上冷喷涂6061铝合金涂层,研究了驱动气体温度对铝合金涂层显微组织、硬度和耐腐蚀性能的影响。结果表明:随驱动气体温度升高,6061铝合金粉末的沉积率显著增加,涂层的硬度略有降低,而孔隙率则明显降低,耐腐蚀性能显著提高;当驱动气体温度为500 ℃时,铝合金涂层的综合性能最优,此时孔隙率为0.23%,硬度为89.8 HV,耐腐蚀性能显著优于ZM6镁合金。
6061铝合金涂层
显微组织
硬度
耐腐蚀性能
cold spraying
6061 aluminum alloy coating
microstructure
hardness
corrosion resistance
Abstract
6061 aluminum alloy coating was cold sprayed on ZM6 magnesium alloy substrate at four driving gas temperatures (350,400,450,500 ℃). The effects of driving gas temperature on the microstructure, hardness and corrosion resistance of the aluminum alloy coating were studied. The results show that with the increase of driving gas temperature, the deposition rate of 6061 aluminum alloy powder increased significantly, the hardness of coating slightly decreased, but the porosity decreased significantly, and the corrosion resistance of the coating increased significantly. When the driving gas temperature was 500 ℃, the comprehensive performance of the aluminum alloy coating was the best; the porosity was 0.23%, the hardness was 89.8 HV, and the corrosion resistance was significantly better than that of ZM6 magnesium alloy.
中图分类号 TG174.4 DOI 10.11973/jxgccl202310008
所属栏目 试验研究
基金项目 传动系统适海性机匣增材修复技术研究项目(KY-1044-2021-0094);湖南省自然科学基金面上资助项目(2023JJ30153)
收稿日期 2022/11/21
修改稿日期 2023/7/21
网络出版日期
作者单位点击查看
联系人作者王群副教授
备注李海峰(1983-),男,湖南邵阳人,工程师,硕士
引用该论文: LI Haifeng,ZHONG Yuan,LIU Jianwu,WANG Yiwei,FANG Bingbing,WANG Qun. Effect of Driving Gas Temperature on Microstructure and Properties of Cold Sprayed 6061 Aluminum Alloy Coating[J]. Materials for mechancial engineering, 2023, 47(10): 50～54
李海峰,仲原,刘建武,汪义伟,方冰冰,王群. 驱动气体温度对冷喷涂6061铝合金涂层组织和性能的影响[J]. 机械工程材料, 2023, 47(10): 50～54
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【6】王福会,杜克勤,张伟.镁合金的腐蚀与防护研究进展[J].中国材料进展,2011,30(2):29-34. WANG F H,DU K Q,ZHANG W.Progress in research of corrosion and protection of magnesium alloys[J].Materials China,2011,30(2):29-34.
【7】SINGH C,TIWARI S K,SINGH R.Exploring environment friendly nickel electrodeposition on AZ91 magnesium alloy:Effect of prior surface treatments and temperature of the bath on corrosion behaviour[J].Corrosion Science,2019,151:1-19.
【8】WEI Y K,LUO X T,GE Y,et al.Deposition of fully dense Al-based coatings via in situ micro-forging assisted cold spray for excellent corrosion protection of AZ31B magnesium alloy[J].Journal of Alloys and Compounds,2019,806:1116-1126.
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【10】BEDARD B A,FLANAGAN T J,ERNST A T,et al.Microstructure and micromechanical response in gas-atomized Al6061 alloy powder and cold-sprayed splats[J].Journal of Thermal Spray Technology,2018,27(8):1563-1578.
【11】HALL A C,BREWER L N,ROEMER T J.Preparation of aluminum coatings containing homogenous nanocrystalline microstructures using the cold spray process[J].Journal of Thermal Spray Technology,2008,17(3):352-359.
【12】RECH S,TRENTIN A,VEZZ S,et al.Different cold spray deposition strategies:Single- and multi-layers to repair aluminium alloy components[J].Journal of Thermal Spray Technology,2014,23(8):1237-1250.
【13】WEST M K,KAPLOWITZ D,HOWE C,et al.Dissimilar metal joining and structural repair of ZE41A-T5 cast magnesium by the cold spray (CS) process[J].Materials and Manufacturing Processes,2018,33(2):130-139.
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