2024铝合金表面微弧氧化及封孔处理对其疲劳性能的影响  

Effect of Micro-arc Oxidation Coatings and Micro-arc Oxidation Coatings after Sealing Treatment on Fatigue Properties of 2024 Aluminium Alloys

作　　者：闻勃[1] 郭兴伍[1] 陈洁 吴松林 易俊兰 朱荣玉[1] 丁文江[1] 

机构地区：[1]上海交通大学材料科学与工程学院,上海200240 [2]上海飞机制造有限公司,上海200436

出　　处：《表面技术》2012年第5期44-46,63,共4页Surface Technology

基　　金：国家商用飞机制造工程技术研究中心创新基金项目(SAMC11-JS-07-223)

摘　　要：对2024铝合金采用标准硬质氧化(依照我国现行航空用铝合金硬质氧化工艺标准)、微弧氧化、微弧氧化/封孔三种工艺进行处理,在典型应力比(R=-1.0)条件下,对比了三种样品的疲劳性能。结果表明:硬质氧化后的2024铝合金,在低载荷和高载荷下的疲劳性能均比未处理的2024合金差;微弧氧化处理后的样品,在低载荷下的疲劳性能比未处理的2024铝合金好,在高载荷下的疲劳性能则相对较差;微弧氧化并封孔处理后的样品,在高载荷和低载荷下的疲劳性能均比未氧化处理的2024铝合金基材好。2024 aluminium alloys was treated by three methods： （1）hard anodic oxidation（the standard process used in Chinese aviation industry）, （2） micro-arc oxidation and （3）micro-arc oxidation followed by sealing. The fatigue properties of three samples prepared by three methods were compared under typical stress ratio （R=-1.0） conditions. The results show that the fatigue properties of 2024 aluminium alloy treated by hard anodic oxidation process are lower than that of 2024 alloy substrate both at high and low fatigue loads; The fatigue properties of 2024 aluminium alloy trea-ted by micro-arc oxidation treatment are better than that of 2024 alloy substrate at low fatigue loads, but worse than that of 2024 alloy substrate at high fatigue loads; The fatigue properties of 2024 aluminium alloys treated by micro-arc oxida- tion and sealing treatment are better than that of 2024 aluminium alloy substrate without oxidation treatment.

关 键 词：铝合金 硬质氧化 微弧氧化 疲劳 

分 类 号：TG174.453[金属学及工艺—金属表面处理] TG111.8[金属学及工艺—金属学]