刘瑛,张新明,周古昕,刘波,李慧中,高慧,李惠杰

• 1:中南大学材料科学与工程学院
• 2:中南大学材料科学与工程学院
• 3:中国兵器科学研究院宁波分院
• 4:中南大学材料科学与工程学院

摘要(Abstract)：

采用金相观察、硬度测试与透射电镜等方法,研究了时效前冷轧预变形量对2519铝合金晶界无沉淀带及析出相大小、分布和抗剥蚀性能的影响。结果表明当预变形量由0%增至25%时,合金的硬度值增加且到达峰值时效时间缩短,晶界无沉淀带宽度减小,晶内析出相尺寸相应减小并趋于弥散分布。同时合金抗剥落腐蚀性能呈先下降后上升的趋势,其中预变形量为5%与15%的合金在晶粒扁平度增大以及不溶产物产生的楔应力共同作用下,抗剥蚀性能最差,剥蚀等级为E-C级,25%的合金次之(EB+),0%变形量的合金剥蚀等级为EB-。

关键词(KeyWords)： 预变形量;剥蚀;2519铝合金

Abstract:

Keywords:

基金项目(Foundation): 国家重点基础研究发展规划项目(2005CB623706);; 湖南省博士点基金(2004053304)

作者(Author): 刘瑛,张新明,周古昕,刘波,李慧中,高慧,李惠杰

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