CAJ | 학술논문

等径角挤压被认为是最具工业化应用前景的大塑性变形技术之一，但其局限限制了其工业化应用。文中在常规等径角挤压技术的基础上提出了一种正挤压结合侧向挤压新工艺，采用DEFORM-2D软件对该新工艺进行了数值模拟。结果表明：这种新型工艺具有单道次变形量大且均匀的特点，为高效制备大尺度块体超细晶材料提供了新途径，但挤压时所需载荷也较大。因此，需通过进一步的工艺参数优化，为模具设计和选材提供一定的保障。
등경각제압피인위시최구공업화응용전경적대소성변형기술지일，단기국한한제료기공업화응용。문중재상규등경각제압기술적기출상제출료일충정제압결합측향제압신공예，채용DEFORM-2D연건대해신공예진행료수치모의。결과표명：저충신형공예구유단도차변형량대차균균적특점，위고효제비대척도괴체초세정재료제공료신도경，단제압시소수재하야교대。인차，수통과진일보적공예삼수우화，위모구설계화선재제공일정적보장。
Equal channel angular pressing ( ECAP ) is regarded as one of the most promising large plastic de-formation processes .But its localization limits the industrial application of this process .A novel process named forward extrusion integrated with lateral extrusion ( FELE) was presented based on conventional ECAP .Numeri-cal simulation was conducted by using DEFORM -2D finite element code .The results show that the new process is characterized by large and even strain , which provides an approach for fabricating bulk ultra-fined materials ef-ficiently .But the extrusion load is higher .Therefore , further process parameters optimization should be conduc-ted to provide protection for die design and material selection .