CAJ | 학술논문

模压变形法(CGP&GP)是新近开发的一种剧烈塑性变形方法,可在保持试样外形尺寸不变的情况下制备超细晶板材.其基本工艺原理是将试样放入齿形周期变化的模具中,在压力的作用下,对试样进行反复的变形,从而使得有效应变得到累积,最终使材料晶粒得到细化.详细介绍了CGP&GP的工艺原理,变形道次、模压温度和模具齿宽等影响因素对试样材料组织和力学性能的影响规律.
모압변형법(CGP&GP)시신근개발적일충극렬소성변형방법,가재보지시양외형척촌불변적정황하제비초세정판재.기기본공예원리시장시양방입치형주기변화적모구중,재압력적작용하,대시양진행반복적변형,종이사득유효응변득도루적,최종사재료정립득도세화.상세개소료CGP&GP적공예원리,변형도차、모압온도화모구치관등영향인소대시양재료조직화역학성능적영향규률.
Constrained groove pressing (CGP) and groove pressing (GP) are newly developed severe plastic deformation techniques for fabrication of plate-shaped metallic materials without changing their initial dimensions. Their basic principle is that samples are put into the molds with cycle variational teeth. The samples are subjected to repetitive deformation under the pressure function, so that the effective strain is cumulated and the grains of the samples are refined finally. The basic principle of CGP&GP and the influence of processing technology on the microstructure and mechanical properties are introduced.