Structure Change and Improvement of the Mechanical Properties of Lotus-type Porous Copper by ECAE Process

摘要：

Deformation behavior of lotus-type porous copper with long cylindrical pores aligned in one direction through equal-channel angular extrusion (ECAE) process was investigated using a die with channel angle of 150°. Although the density slightly increased after every pass, the porous structure remains in the process. The Vickers hardness and the compressive yield strength of lotus copper increased through the ECAE process. The compressive yield strength after 3 passes increased up to 10 times larger than that before processing. The deformation of lotus copper takes place by budding and the shearing of the cell walls. The increase in hardness is comidered to be caused by work hardening.

关键词： porous metals lotus copper ECAE severe plastic deformation Vickers hardness,yield strength

作者: Juan Lobos Shinsuke Suzuki Hiroshi Utsunomiya Hideo Nakajima

作者单位: The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka Division of Materials and Manufacturing Science, Graduate School of Engineering Osaka University, Ya The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka,Ibaraki, Osaka

会议类型: 国际会议

会议名称: 10th International Symposium on Eco-Materials Processing and Design(第10届国际生态材料加工与设计研讨会)

会议地点: 西安

会议语种:英文

页码: 757-760

在线出版日期: 2009-01-13（万方平台首次上网日期，不代表论文的发表时间）