H62黄铜合金连续挤压的变形行为和组织演变特征

来源期刊：有色金属2011年第1期

论文作者：隋贤 宋宝韫 李冰 运新兵

文章页码：11 - 13

关键词：金属材料； H62黄铜合金； 连续挤压； 变形行为

Key words：metal material； H62 brass alloy； continuous extrusion； deformation behavior

摘    要：研究H62黄铜合金连续挤压过程中的变形行为,并分析其组织演变特征。结果表明,连续挤压时金属塑性流动不同于常规挤压,在塑性变形区产生了一个剧烈的剪切变形带,剧烈的剪切变形促进了动态再结晶的发生,使铸态的柱状晶转变成细小的等轴晶,有利于缓解塑性变形的不均匀性,并且有利于增强金属间的结合能力,提高了产品的的综合性能。

Abstract: The deformation behavior of H62 brass alloy in the continuous extrusion process is investigated,and the microstructure characteristic is analyzed.The results show that metal flow in the continuous extrusion process is different from conventional extrusion.There is a sever shear band in plastic deformation zone.With deformation and temperature increasing,the dynamic crystallization is demonstrated.The homogeneous grain can be achieved.The non-uniformity of plastic deformation is decreased,and inter-metal binding capacity is enhancement.Continuous extrusion improved microstructure of material effectively.