冶金质量对铝合金疲劳性能影响的探讨  

Influence of metallurgical quality on the fatigue properties of aluminum alloy

作　　者：祁艳华[1] 丛福官[1] 刘平[1] 林森[1] 曹永亮[1] 

机构地区：[1]东北轻合金有限责任公司,黑龙江哈尔滨150060

出　　处：《轻合金加工技术》2015年第11期19-23,共5页Light Alloy Fabrication Technology

摘　　要：评述铝合金疲劳裂纹萌生研究现状及机制,阐述了典型铝合金及其合金元素对疲劳性能的影响规律,非金属夹杂、气孔、疏松及粗大第二相等对疲劳裂纹萌生的影响,得出通过控制合金元素含量、减少杂质、提高洁净度、改善变质效果和改进热处理等可有效改善铝合金的断裂韧性。This review summarizes research status and mechanism of fatigue crack initia- tion in aluminum alloy, the influence of typical aluminum alloy and alloy elements on fatigue properties and the influence of non-metallic inclusion, pore, loose and coarse second phases on fatigue crack initiation. The results show that controlling of alloy elements, reducing impu- rities, improving cleanliness, modification effect and heat treatment can effectively improve the fracture toughness of high strength aluminum alloys.

关 键 词：铝合金 冶金质量 疲劳性能 裂纹萌生 

分 类 号：TG146.21[一般工业技术—材料科学与工程]