特种铸造及有色合金
特種鑄造及有色閤金
특충주조급유색합금
SPECIAL CASTING & NONFERROUS ALLOYS
2010年
2期
123-127
,共5页
杨智强%史庆南%起华荣%王效琪%康立伟%肖潇%罗许
楊智彊%史慶南%起華榮%王效琪%康立偉%肖瀟%囉許
양지강%사경남%기화영%왕효기%강립위%초소%라허
6061铝合金%等通道挤压%有限元模拟%圆心角%摩擦%晶粒
6061鋁閤金%等通道擠壓%有限元模擬%圓心角%摩抆%晶粒
6061려합금%등통도제압%유한원모의%원심각%마찰%정립
6061 Aluminum Alloy%ECAP%FEM%Central Angle%Frictional Coefficient%Grains
采用有限元技术模拟6061铝合金在室温下等通道转角挤压(ECAP)过程,分析了模具圆心角、摩擦因数对ECAP过程的影响.结果表明,圆心角减小,试样等效应变值增大且较为均匀,但是挤压载荷增加;摩擦对载荷的影响明显.单道次挤压后,试样变形不均匀.
採用有限元技術模擬6061鋁閤金在室溫下等通道轉角擠壓(ECAP)過程,分析瞭模具圓心角、摩抆因數對ECAP過程的影響.結果錶明,圓心角減小,試樣等效應變值增大且較為均勻,但是擠壓載荷增加;摩抆對載荷的影響明顯.單道次擠壓後,試樣變形不均勻.
채용유한원기술모의6061려합금재실온하등통도전각제압(ECAP)과정,분석료모구원심각、마찰인수대ECAP과정적영향.결과표명,원심각감소,시양등효응변치증대차교위균균,단시제압재하증가;마찰대재하적영향명현.단도차제압후,시양변형불균균.
Effects of central angle, frictional coefficient on the forming of ECAP were analyzed by simulating ECAP process of 6061 aluminum alloy at room temperature with the help of FEM (finite element method). The results reveal that with decreasing in central angle, equivalent strain of the samples is increased with more homogeneous distribution, however, pressing load is increased. Friction coefficient is closely related to the forming load. The samples exhibit heterogeneous deformation after one pressing.
