摘要
采用光学显微镜、扫描电镜和透射电镜等分析手段,研究了固溶温度对一种添加Zr、Sr的6013铝合金显微组织、硬度、电导率和抗晶间腐蚀性能的影响。随6013铝合金固溶温度从530℃提高到570℃,经T6时效后,显微硬度逐渐升高,电导率逐渐降低,抗晶间腐蚀性能大幅提高,并对其微观机理进行了初步探讨。结果表明:随着固溶温度的升高,铝合金组织中未溶Mg2Si相减少,晶界析出相尺寸增大,分布类型由连续分布转变为点状分布。
The effects of different solid solution treatment temperatures （530-570 ℃ ） on microstructure, hardness, electric conductivity and intergranular corrosion beharvior of 6013 aluminum alloy were investigated by means of metallographic microscope, SEM and TEM. With the solid solution temperature increasing from 530 ℃ to 570 ℃ , after the artificial aging treatment, mierohardness of the alloy is enhanced gradually, at the same time, electric conductivity of the alloy is decreased and the intergranular corrosion resistance of the alloy is improved. The results show that with the solid solution temperature increasing, the undissolved Mg2Si phase in alloy decreases and the size of precipitates at grain boundaries increases, and the continuous distribution of the precipitates change to point distribution.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2013年第4期46-50,共5页
Transactions of Materials and Heat Treatment
基金
江苏省工业科技支撑计划项目(BE2008118)
江苏大学"拔尖人才培养工程"基金(1211110001)
关键词
6013铝合金
固溶处理
组织
晶间腐蚀
6013 aluminum alloy
solution treatment
microstructure
intergranular corrosion
