School of Mechanical, Materials & Mechatronic Engineering, University of Wollongong, NSW 2500, Australia.
Sci Rep. 2012;2:772. doi: 10.1038/srep00772. Epub 2012 Oct 25.
Nanostructural Al 1050 sheets were produced using a novel method of asymmetric cryorolling under ratios of upper and down rolling velocities (RUDV) of 1.1, 1.2, 1.3, and 1.4. Sheets were rolled to about 0.17 mm from 1.5 mm. Both the strength and ductility of Al 1050 sheets increase with RUDVs. Tensile strength of Al sheets with the RUDV 1.4 is larger 22.3% of that for RUDV 1.1, which is 196 MPa. The TEM observations show the grain size is 360 nm when the RUDV is 1.1, and 211 nm for RUDV 1.4.
采用上、下轧辊速度比（RUDV）为 1.1、1.2、1.3 和 1.4 的非对称低温滚轧方法制备了纳米结构 Al 1050 板材。板材从 1.5mm 轧至约 0.17mm。Al 1050 板材的强度和延展性均随 RUDV 的增加而提高。RUDV 为 1.4 时，Al 板材的拉伸强度比 RUDV 为 1.1 时大 22.3%，为 196MPa。TEM 观察表明，RUDV 为 1.1 时晶粒尺寸为 360nm，而 RUDV 为 1.4 时为 211nm。
