摘要
微合金化是提高铝合金性能的重要途径,而Sn是铝合金中最具潜力的微合金化元素之一,可以有效改善合金的组织和性能。微量Sn的加入可以显著影响铝合金中的时效析出,这是由于其在铝基体中固溶度小、扩散速率快以及与空位之间的结合能力较强所致。综述了微量Sn对可热处理强化铝合金的微观结构和力学性能的影响,深入探讨了Sn在铝合金中对时效析出的影响机理,并分析了目前微量Sn化铝合金的研究中仍存在的一些问题及主要的研究方向。
Microalloying is an effective method to improve the properties of aluminum alloys. Sn is one of the most potential microalloying elements in aluminum alloy, which can significant improve the properties of these alloys. Addition of Sn can distinctly impact the aging precipitation in aluminum alloys due to its low solubility and high diffusivity in matrix and the strong interaction energy with vacancy. This paper introduces the influence of Sn addition on the mierostructure and the mechanical properties of the heat-treatable aluminum alloys, and the mechanism of Sn addition on the precipitation is discussed. Besides, the problems and research directions are pointed out.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2017年第9期123-127,145,共6页
Materials Reports
基金
国家自然科学基金(51271209)
国家国际科技合作专项(2014DFA51270)
关键词
可热处理强化铝合金
锡
微合金化
时效析出
heat-treatable aluminum alloys, Sn, microalloying, aging precipitation
