第11期 潘红波等：平面应变过程中摩擦对金属流变规律的影响 .1269. (a) (b) (c) 图5不同摩擦条件下变形区形状示意图，摩擦因数分别为0(a)、0.5(凸)和1(c) Fig-5 Schematic diagram of deformation zone shape at different friction coefficients:(a)0:(b)0.5:(c)1 2.7260 2.770 2.4540 2.493 2.1810 2.216 1.9080 1.939 1.6360 1.662 13630 1.385 1.0900 1.108 0.8179 0.831 0.5452 0.554 0.2726 0.277 0 0 (@4上4x=0.l b)μ上=01μx=0.05 3.030 3.5350 2.727 3.2000 2.424 2.8440 2.121 2.4890 1.818 2.1330 1.515 1.7780 1.212 1.4220 0.909 1.0670 0.606 0.7111 0.303 0.3555 0 (c)μ上-03：4￥-0.05 (dμ1=0.5μr=0.05 图6上下界面摩擦条件对变形流动以及等效应变分布的影响 Fig6 Effects of friction conditions at top and bottom interfaces on the deformation behaviour and equivalent strain distribution (a)上下接触血均无润滑 (b)上接触面无润滑，下接触面采用液压油润滑 图7上下界面不同摩擦条件下工业纯铝室温变形后试样示意图 Fig7 Schematic diagram of deformed industrial pure aluminium at room temperature in different friction conditions at top and at bottom interfaces (下转第1281页)图5 不同摩擦条件下变形区形状示意图．摩擦因数分别为0（a）、0∙5（b）和1（c） Fig．5 Schematic diagram of deformation zone shape at different friction coefficients：（a）0；（b）0∙5；（c）1 图6 上下界面摩擦条件对变形流动以及等效应变分布的影响 Fig．6 Effects of friction conditions at top and bottom interfaces on the deformation behaviour and equivalent strain distribution 图7 上下界面不同摩擦条件下工业纯铝室温变形后试样示意图 Fig．7 Schematic diagram of deformed industrial pure aluminium at room temperature in different friction conditions at top and at bottom interfaces （下转第1281页） 第11期 潘红波等： 平面应变过程中摩擦对金属流变规律的影响 ·1269·