中國(guó)有色金屬學(xué)報(bào)(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 23 No. 2 February 2013 |
（1. State Key Laboratory for Corrosion and Protections, Institute of Metal Research,
Chinese Academy of Sciences, Shenyang 110016, China;
2. University of Chinese Academy of Sciences, Beijing）
Abstract:The severe cold rolling was employed to enhance strength of Mg-3Gd-1Zn (mass fraction, %) alloy sheet. The 0.2% yield stress of the Mg-3Gd-1Zn hot-rolled sheet can be increased by 150% through the single-pass cold rolling with the reduction of 23%, due to the high intensity of dislocation and basal texture established during cold rolling. Compared with the Mg-3Gd-1Zn hot-rolled sheet, the cold-rolled sheet annealed at 350 °C for 30 min may get an enhancement in strength without a great loss of ductility. The sheet processed by multi-pass cold rolling does not show a higher strength as expected, due to the softening effect of shear bands. However, the thin slab with the thickness less than 1 mm can be produced by the multi-pass cold rolling with the annealing treatment as few as possible.
Key words: magnesium alloys; cold rolling; strength; texture
