Metal sheets are forward extruded at large plastic strains up to 1.6. The sheet specimens are placed between two half-cylindrical billets and cold-extruded collectively. While extruding the sheets, their central zone is plastically deformed nearly homogeneously under a deviatoric stress state equivalent to simple tension. Tensile test specimens are extracted from the extruded sheets at various extrusion strains delivering flow stresses at discrete large plastic strains of the flow curve. Sheet thicknesses as thin as 0.2 mm could be tested successfully. Steel and aluminum alloys with different strengths were investigated. Results were compared with in-plane torsion test measurements.

金属板在高达 1.6 的大塑性应变下向前挤压。将片材试样放置在两个半圆柱形坯料之间并一起冷挤压。在挤压板材时，它们的中心区域在相当于简单张力的偏应力状态下几乎均匀地塑性变形。拉伸试样在各种挤压应变下从挤压板中提取，在流动曲线的离散大塑性应变下传递流动应力。可以成功测试薄至 0.2 毫米的板材厚度。研究了具有不同强度的钢和铝合金。结果与平面内扭转测试测量结果进行了比较。