摘要
等通道转角挤压技术(ECAP)是一种目前最有工程应用潜力的大塑性变形(SPD)细晶材料制备技术,具有材料组织细化效果好、加工材料尺寸大等优点。阐述了ECAP处理对材料性能的影响,主要包括材料强韧性能的提高、超塑性的获得以及材料疲劳性能和功能特性的改善。在此基础上,探讨了近年来ECAP技术在工业化应用方面的研究进展,如各种大尺寸材料加工的试验研究、连续化生产和提高加工效率的解决方案等,同时指出了目前研究中存在的不足之处和需要解决的主要问题。
Equal-channel angular pressing (ECAP) is one of the most feasible severe plastic deformation techniques for industry manufacturing operation. The influence on material properties of ECAP processing is expounded in this article,including the effects on improving both the strength and ductility, achieving super-plasticity, and improving the fatigue property and functional properties. The main results as well as the deficiency of present investigations on promoting ECAP technique in industry manufacture are discussed, including the processing of big scale materials and the solutions for continuous processing and improving the efficiency.
出处
《新技术新工艺》
2007年第3期74-78,共5页
New Technology & New Process
关键词
ECAP
大尺寸超细晶材料
力学性能
加工效率
ECAP, ultra-fine-grained material, mechanical properties, processing efficiency
