CAJ | 학술논문

综述了采用剧烈塑性变形技术制备块体超细品和纳米晶结构金属的主要方法,如等通道转角挤压、高压扭转、累积轧合与往复挤压.并介绍了两种完全有别于传统的剧烈塑性变形制备超细晶和纳米晶金属材料的最新工艺,如大应变切削和大应变挤压切削.系统地阐明了这些方法的基本原理、变形特点及应用,分析其优缺点并提出改进措施与发展方向.
종술료채용극렬소성변형기술제비괴체초세품화납미정결구금속적주요방법,여등통도전각제압、고압뉴전、루적알합여왕복제압.병개소료량충완전유별우전통적극렬소성변형제비초세정화납미정금속재료적최신공예,여대응변절삭화대응변제압절삭.계통지천명료저사방법적기본원리、변형특점급응용,분석기우결점병제출개진조시여발전방향.
The principle methods of produced bulk nano-structure metal materials by sever plastic deformation (SPD), such as equal channel angular pressing, high pressure and torsion, reciprocal extrusion and compression and accumulative roll bonding, were summarized. Two novel technologies which are radically different from traditional SPD methods, such as large strain machining (LSM) and large strain extrusion machining (LSEM), were introduced. The fundamental principle, characteristic of deformation, application, advantages and disadvantages were illustrated. At the same time, some solutions and prospects were put forward on the basis of the discussion above.