挤压比对Be-50Al合金棒材热挤压成形的影响  

作　　者：周运洪 鲍永鑫 张晨 

机构地区：[1]中国工程物理研究院材料研究所,四川绵阳621907

出　　处：《科技创新与应用》2024年第35期90-93,共4页Technology Innovation and Application

摘　　要：根据铍铝合金的热变形性质,提出铍铝合金热挤压成形工艺,并采用有限元方法进行仿真研究。对比铍铝合金棒材在不同挤压比条件下的成形载荷及应力、应变分布。结果表明,变形所需载荷随着挤压比的减小而减小;变形应力较大区域为过渡区;坯料的应变量随着挤压比的增大而增大;坯料的应变速率随着挤压比的增大而增大。According to the hot deformation properties of beryllium aluminum alloy,a hot extrusion forming process of beryllium aluminum alloy was proposed and simulated by finite element method.The forming loads,stress and strain distributions of beryllium aluminum alloy bars under different extrusion ratios were compared.The results show that:the load required for deformation decreases with the decrease of extrusion ratio;the region with large deformation stress is the transition region;the strain of the billet increases with the increase of extrusion ratio;the strain rate of the billet increases with the increase of extrusion ratio.

关 键 词：Be-50Al合金 热挤压 挤压比 热变形 应变速率 

分 类 号：TG376.2[金属学及工艺—金属压力加工]