中文摘要：

通过与轧制轴成0°、45°和90°方向的单向拉伸试验，研究了2B06铝合金板O态和W态（新淬火态）下材料的强度各向异性（3个方向屈服强度的变化）和塑性流动各向异性（3个方向厚向异性指数的变化）行为。发现，虽然屈服强度和应变硬化受热处理状态影响显著，但强度各向异性和塑性流动各向异性受热处理状态影响较小，均在试验数据分散范围之内。获取的试验数据被用来校准Hill48屈服准则。通过绘制的屈服轨迹发现，对于W态可以采用与O态相同的屈服面形状来描述其材料塑性各向异性行为，这样将显著减少W态下本构模型校准需要的试验数。

英文摘要：

Plastic anisotropic behavior in strength （variation of yield strength in three direction） and plastic flow （variation of rvalue in three direction） of 2B06 aluminum alloy sheet in temper O and temper W is investigated by uniaxial tensile tests at angles 0°, 45 and 90° from the rolling axis. It is found that yield strength and strain hardening vary significantly with temper, but plastic anisotropy in strength and plastic flow vary little with temper and what little there is falls within the range of experimental scatter. Hill48 yield criterion is calibrated by experimental data obtained and yield loci is drawn. It is found that plastic anisotropic behavior of W temper is possible to be described by using the shape of the yield surface of O temper. So the amount of empirical testing to calibrate the constitutive model in W temper is decreased significantly.