CAJ | 학술논문

通过单向拉伸试验获得了LF2M(Φ75 mm×1.5 mm)和LF21M(Φ27 mm×1 mm)两种铝合金管材的基本力学性能.研究了不同数学模型对材料应变硬化曲线的描述能力,发现采用幂函数对LF2M管材试验数据拟合较好,指数函数对LF21M管材试验数据拟合较好;基于单向拉伸试验获得了两种铝合金管材的塑性应变比.为上述两种试验铝合金管材的塑性成形分析提供了实用的材料模型.
통과단향랍신시험획득료LF2M(Φ75 mm×1.5 mm)화LF21M(Φ27 mm×1 mm)량충려합금관재적기본역학성능.연구료불동수학모형대재료응변경화곡선적묘술능력,발현채용멱함수대LF2M관재시험수거의합교호,지수함수대LF21M관재시험수거의합교호;기우단향랍신시험획득료량충려합금관재적소성응변비.위상술량충시험려합금관재적소성성형분석제공료실용적재료모형.
Basic material properties of aluminium alloy tubes of LF2M (Φ75 minx 1.5 mm) and LF21M (Φ27 minx 1 mm) were obtained using uniaxial tensile test. Strain hardening curves fitted using different mathematic models and curves obtained by the uniaxial tensile test were compared. The results show that power function is accurate for LF2M tube,while exponent function is appropriate for LF21M tube. Plastic strain ratios for the above tubes were acquired based on uniaxial tensile test. The research provides a practical material model for the forming of LF2M and LF21M aluminum alloy tubes.