TY - GEN
T1 - Nanostructured Surface Modification of AISI 304 Stainless Steel by Laser Shock Peening Followed by Ultrasonic Impact Peening
AU - Lesyk, Dmytro
AU - Soyama, Hitoshi
AU - Dzhemelinskyi, Vitaliy
AU - Voloshko, Svitlana
AU - Mordyuk, Bohdan
AU - Lymar, Oleksandr
N1 - Funding Information:
ACKNOWLEDGMENT This study was financially supported by the JSPS KAKENHI (Grants Number 18KK0103 and 20H02021) and the German Academic Exchange Service (DAAD) Research Grant. Partial support by the National Academy of Sciences of Ukraine (Grant Number 0119U001167) and the Ministry of Education and Science of Ukraine (Grant Number 0121U109752) are also acknowledged.
Publisher Copyright:
©2021 IEEE
PY - 2021
Y1 - 2021
N2 - Laser shock peening (LSP) combined with ultrasonic impact peening (UIP) was proposed both to improve surface roughness and enhance the subsurface grain refinement and residual stress values. In this study, the effects of the submerged LSP, multi-pin UIP, and LSP followed by UIP treatments on the surface characteristics of AISI 304 austenitic stainless steel were studied. The peened specimens were compared in terms of surface roughness/hardness, near-surface grain size, and residual stress. The nano-sized grains were formed on the surfaces in the combined LSP+UIP treated specimen were smaller than those of the LSP and UIP treated specimens. Compared to the untreated specimen (~22 HRC5), the surface hardness was increased by about 30%, 73%, and 78% after the LSP, UIP, and combined LSP+UIP treatments, respectively. The lowest surface roughness and highest compressive residual stress values were observed after combined LSP+UIP peening technique.
AB - Laser shock peening (LSP) combined with ultrasonic impact peening (UIP) was proposed both to improve surface roughness and enhance the subsurface grain refinement and residual stress values. In this study, the effects of the submerged LSP, multi-pin UIP, and LSP followed by UIP treatments on the surface characteristics of AISI 304 austenitic stainless steel were studied. The peened specimens were compared in terms of surface roughness/hardness, near-surface grain size, and residual stress. The nano-sized grains were formed on the surfaces in the combined LSP+UIP treated specimen were smaller than those of the LSP and UIP treated specimens. Compared to the untreated specimen (~22 HRC5), the surface hardness was increased by about 30%, 73%, and 78% after the LSP, UIP, and combined LSP+UIP treatments, respectively. The lowest surface roughness and highest compressive residual stress values were observed after combined LSP+UIP peening technique.
KW - 304 stainless steel
KW - combined laser-ultrasonic modification
KW - hardness
KW - laser shock processing
KW - nano-sized grain structure
KW - residual stress
KW - roughness
KW - ultrasonic impact treatment
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U2 - 10.1109/NAP51885.2021.9568614
DO - 10.1109/NAP51885.2021.9568614
M3 - Conference contribution
AN - SCOPUS:85126600856
T3 - Proceedings of the 2021 IEEE 11th International Conference "Nanomaterials: Applications and Properties", NAP 2021
BT - Proceedings of the 2021 IEEE 11th International Conference "Nanomaterials
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 11th IEEE International Conference "Nanomaterials: Applications and Properties", NAP 2021
Y2 - 5 September 2021 through 11 September 2021
ER -