@inproceedings{3c6d4a021cb84ced8cd540ed346f8872,
title = "Investigation on the intrinsic plasticity of gradient nano-grained aisi 304 stainless steel treated by ultrasonic impact treatment",
abstract = "The gradient nano-grained (GNG) structure was formed on the top layer of AISI 304 with coarse grains (CG) by ultrasonic impact treatment. The impact velocity was 5 m/s and the coverage was changed from 3000% to 15000% to obtain different microstructure GNG/CG materials. The tensile test and small punch test were also performed to investigate the uniaxial and biaxial deformation behaviors of the GNG/CG materials. The results showed that the yield strength σs was enhanced in both uniaxial and biaxial deformation conditions. But the tensile strength σb was not nearly changed. The tensile fracture appeared to be dimple. The size of the dimples changed with gradient from the treated surface to the matrix. The strain localization was effectively suppressed in both conditions. AISI 304 of GNG/CG structure was elastically homogeneous but plastically gradient which offered unusual mechanical responses. So the GNG/CG 304 showed intrinsic plasticity like coarse grain one.",
keywords = "AISI 304 stainless steel, Gradient nano-grained structure, Intrinsic plasticity, Small punch test",
author = "Xinjun Yang and Xiang Ling and Sisheng Yang and Shuhua Lu",
note = "Publisher Copyright: Copyright {\textcopyright} 2014 by ASME.; ASME 2014 Pressure Vessels and Piping Conference, PVP 2014 ; Conference date: 20-07-2014 Through 24-07-2014",
year = "2014",
doi = "10.1115/PVP2014-28239",
language = "英语",
series = "American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP",
publisher = "American Society of Mechanical Engineers (ASME)",
booktitle = "Materials and Fabrication",
address = "美国",
}