摘要
在累积变形量一定时,在异步轧机上分别采用9、5、3、2道次,平均道次压下率分别为16%、27%、40%、55%的工艺强剪切轧制了6016铝合金板材,并在加热炉中进行540℃固溶处理30 min。借助光学显微镜(OM)、扫描电镜(SEM)、透射电镜(TEM)及X射线衍射仪(XRD)对显微组织特征及宏观织构进行表征。结果表明,随着道次压下率增加,第二相数量增多,E、F及r-cube剪切织构强度增强。经固溶处理后,剪切织构强度略微下降。道次压下率为55%的合金板材在固溶后,基体晶粒及第二相粒子均得到细化,平均晶粒尺寸为44.5μm,第二相粒子尺寸为0.3~0.5μm,弥散分布在基体中。
When the cumulative deformation amount was constant,the processes of rolling with 9,5,3,and 2 passes on the asynchronous rolling mill,and the average pass reduction ratios of 16%,27%,40%and 55%,respectively,were used for strong shear rollied 6016 aluminum alloy sheet,which was then solution treated at 540℃for 30 min in a heating furnace.The microstructure characteristics and macroscopic texture were analyzed by means of optical microscope(OM),scanning electron microscope(SEM),transmission electron microscope(TEM)and X-ray diffraction(XRD).The results show that with the increase of pass reduction,the number of the second phase increases,and the shear texture strength of E,F and r-cube shear texture increases.After solution treatment,the strength of shear texture slightly declines.After the solution treatment,the matrix grains and the second phase particles of the alloy sheet with a pass reduction of 55%are refined,the average grain size is 44.5μm,and the size of second phase particle ranges from 0.3μm to 0.5μm,and which is dispersed in the matrix.
作者
林凌峰
袁鸽成
杨濂
丁灿培
Lin Lingfeng;Yuan Gecheng;Yang Lian;Ding Canpei(School of Materials and Energy,Guangdong University of Technology,Guangzhou Guangdong 510006,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2022年第9期36-41,共6页
Heat Treatment of Metals
基金
广东省科技计划(2017A010103018)
广东省自然科学基金(2014A030313518)。
关键词
道次压下率
异步轧制
铝合金
固溶
组织
pass reduction
asynchronous rolling
aluminum alloy
solution
microstructure
