Indentation Stress Relaxation Behavior in As-deposited and Rolling Nanocrystalline NiFe

摘要：

　　The stress relaxation behavior of as-deposited and rolling nanocrystalline NiFe alloy was studied by nanoindentation tests.The results indicated that both the hardness and activation volume of rolling NiFe are larger than that of as-deposited samples.Furthermore,the hardness decreases with increasing indentation depth.The reduction of indentation stress during holding becomes much faster with decreasing the indentation depth.Dislocation density is remarkably enhanced by rolling deformation,leading to the hardening behavior.Dislocation multiplication and accumulation mediated process is believed to the dominant plastic deformation mechanism.

关键词： Nanocrystalline Rolling Stress relaxation Activation volume

作者: Z.H. Cao X.K. Meng

作者单位: Institute of Materials Engineering, National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Nanjing University, Jiangsu, China

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: 352-356

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）