3D NUMERICAL AND EXPERIMENTAL STUDY ON FLOW CHARACTERISTICS OF MULTI-PASS ECAP WITH AA1050
Experiments and numerical simulations were conducted to investigate flow behaviour of the specimen made of commercially pure aluminum alloy (AA1050) during multi-pass equal channel angular pressing (ECAP) for route A up to four passes. Influence of processing conditions on friction and flow behaviour was investigated by measuring load variations, microhardness distributions and microstructure changes depending on the number of passes. It was carefully simulated by employing the finite element technique by tracing the local deformation, determining the load requirement and comparing the local strain with microhardness distributions. Change of the grain size depending on the number of passes was monitored by transmission electron microscopy. The present work clearly showed flow characteristics of the deformed specimen at the central and surface regions due to the effect of the number of passes for the multi-pass ECAP.
Multi-pass equal channel angular pressing finite element analysis microhardness strain homogeneity grain refinement
YOUNG GWAN JIN IL-HEON SON YONG-TAEK IM
Department of Mechanical Engineering, KAIST, 373-1 Guseong-dong, Yuseong-gu, Daejeon,305-701, Korea Wire Rod Research Group, Technical Research Laboratories, POSCO, 1 Goedong-dong, Nam-gu, Pohang, Gye
国际会议
第五届先进材料与加工国际会议(Fifth International Conference on Advanced Materials and Processing ICAMP-5)
哈尔滨
英文
1822-1828
2008-09-03（万方平台首次上网日期，不代表论文的发表时间）