摘要
剧烈塑性变形法(Severe Plastic Deformation,简称SPD)能够高效制备出块体超细晶材料。通过综述高压扭转、多向锻造、累积叠轧、等径角挤压法四种SPD工艺制备块体超细晶材料的技术原理、特点、应用及研究发展中存在的问题,总结该领域材料的强韧性、反Hall-Petch现象、超塑性等力学特征,为今后SPD技术的研究方向与应用前景提供了思路。
Block ultrafine-grained materials can be processed by severe plastic(SPD)deformation efficiently.The technical principle,characteristics and situations of UFG materials processed by SPD,including High Pressure Torsion,Multiple Forging,Accumulative Roll-Bonding and Equal Channel Angular Pressing were reviewed in paper.The mechanical performance characteristics of UFG after SPD,including strength and toughness,inverse HallPetch,superplasticity were summarized.In the end,the defects of SPD were analyzed and future development were discussed.
出处
《天水师范学院学报》
2017年第2期46-51,共6页
Journal of Tianshui Normal University
基金
天水师范学院中青年教师科研资助项目"不同模具角度制备超细晶纯铜组织与力学性能研究"阶段性成果
关键词
剧烈塑性变形
超细晶材料
制备原理
力学性能
severe plastic deformation
ultrafine-grained materials
the principle of processing
mechanic property
