A New Deformation Region and How Low Do You Go? - “Intrinsic Deformation Limit

摘要：

　　The creep deformation in pure aluminum was investigated using helicoid spring samples at room temperature,298 K,and σ < 1.19 MPa.It was found that the stress exponent is n = 0,which means the creep behavior in this region is independent on applied stress but some physical properties of materials.The creep behavior was suggested to be controlled by surface diffusion based on the strongly effect of surface area on creep behavior only in this creep region (n = 0).The threshold creep rate,th ε
,called “intrinsic deformation limit,decided by surface diffusion was suggested.This discovery provided a new perspective to understand the extremely slow deformation in the nature.

关键词： Pure aluminium Very low stress Creep Stress exponent Surface diffusion

作者: Junjie Shen Kenichi Ikeda Satoshi Hata Hideharu Nakashima

作者单位: School of Mechanical Engineering, Tianjin University of Technology, 391 Binshui Road, Xiqing Distric Department of Electrical and Materials Science, Faculty of Engineering Sciences, Kyushu University,

会议类型: 国际会议

会议名称: the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))

会议地点: 太原

会议语种:英文

页码: 559-563

在线出版日期: 2012-07-13（万方平台首次上网日期，不代表论文的发表时间）