基于材料改性的等径角挤压的塑性后处理工艺  

Post-processing plastic technology after equal channel angular pressing(ECAP) based on strengthening the material properties

作　　者：李永志[1,2] 薛克敏[1] 李萍[1] 

机构地区：[1]合肥工业大学材料科学与工程学院,合肥230009 [2]九江学院机械与材料工程学院,九江332005

出　　处：《塑性工程学报》2011年第4期11-16,共6页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助项目(50875072);霍英东教育基金会资助项目(121053)

摘　　要：简要介绍了等径角挤压成形工艺的特点及目前仍存在的诸多问题,综述了等径角挤压的塑性后处理工艺及其研究进展。传统等径角挤压后再进行其他塑性工艺的后处理,可以有效克服等径角挤压工艺的不足;进一步细化晶粒、增强材料的强度和硬度、改善材料综合性能,是提高等径角挤压制备效率的有效途径。The characteristics of the process and the problems still existed were briefly described.Post-processing technologies for strengthening the material properties after ECAP processing was reviewed.Post-processing after conventional ECAP processing can effectively overcome deficiency of ECAP process,further refine the grain,enhance the material strength and hardness,and improve the overall performance of materials.This is an effective way for enhancing the efficiency of ECAP process.

关 键 词：等径角挤压 大塑性变形(SPD) 后处理 材料改性 工业化 

分 类 号：TG376.5[金属学及工艺—金属压力加工]