Details
| Original language | English |
|---|---|
| Pages (from-to) | 350-355 |
| Number of pages | 6 |
| Journal | Ultrasonics |
| Volume | 84 |
| Early online date | 5 Dec 2017 |
| Publication status | Published - Mar 2018 |
Abstract
During ultrasonic cavitation peening, bubbles repeatedly form and collapse, which leads to high impact loads on the treated surface. At the initial stage of ultrasonic cavitation peening, the most obvious change is plastic deformation instead of mass loss on the treated specimen surface. Meanwhile the plastic deformation is beneficial for mechanical surface properties. As the cavitation exposure time increases, erosion and damage are inflicted on the metal surface due to the increase in the number of collapse events. In this respect, the treatment time is a key parameter to improve the specimen surface properties during this manufacturing process. However, the influence of treatment time on the surface properties has not yet been thoroughly investigated. In this paper, it is the first time to utilize the plastic deformation to evaluate the optimal treatment time at different input power. The plastic deformation can be deduced by the mass loss and the volume change on the treated specimen surface. Using plastic deformation, the modification of surface hardness and roughness are investigated at different cavitation exposure intervals and vibration amplitudes. It is found that significant improvement of the microhardness on the treated surface occurs at the end of incubation period. Higher vibration amplitudes of the horn tip lead to shorter incubation period and higher microhardness.
Keywords
- Microhardness, Plastic deformation, Roughness, Ultrasonic cavitation peening
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Acoustics and Ultrasonics
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In: Ultrasonics, Vol. 84, 03.2018, p. 350-355.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Impact of time on ultrasonic cavitation peening via detection of surface plastic deformation
AU - Bai, Fushi
AU - Saalbach, Kai Alexander
AU - Wang, Liang
AU - Wang, Xiaogeng
AU - Twiefel, Jens
PY - 2018/3
Y1 - 2018/3
N2 - During ultrasonic cavitation peening, bubbles repeatedly form and collapse, which leads to high impact loads on the treated surface. At the initial stage of ultrasonic cavitation peening, the most obvious change is plastic deformation instead of mass loss on the treated specimen surface. Meanwhile the plastic deformation is beneficial for mechanical surface properties. As the cavitation exposure time increases, erosion and damage are inflicted on the metal surface due to the increase in the number of collapse events. In this respect, the treatment time is a key parameter to improve the specimen surface properties during this manufacturing process. However, the influence of treatment time on the surface properties has not yet been thoroughly investigated. In this paper, it is the first time to utilize the plastic deformation to evaluate the optimal treatment time at different input power. The plastic deformation can be deduced by the mass loss and the volume change on the treated specimen surface. Using plastic deformation, the modification of surface hardness and roughness are investigated at different cavitation exposure intervals and vibration amplitudes. It is found that significant improvement of the microhardness on the treated surface occurs at the end of incubation period. Higher vibration amplitudes of the horn tip lead to shorter incubation period and higher microhardness.
AB - During ultrasonic cavitation peening, bubbles repeatedly form and collapse, which leads to high impact loads on the treated surface. At the initial stage of ultrasonic cavitation peening, the most obvious change is plastic deformation instead of mass loss on the treated specimen surface. Meanwhile the plastic deformation is beneficial for mechanical surface properties. As the cavitation exposure time increases, erosion and damage are inflicted on the metal surface due to the increase in the number of collapse events. In this respect, the treatment time is a key parameter to improve the specimen surface properties during this manufacturing process. However, the influence of treatment time on the surface properties has not yet been thoroughly investigated. In this paper, it is the first time to utilize the plastic deformation to evaluate the optimal treatment time at different input power. The plastic deformation can be deduced by the mass loss and the volume change on the treated specimen surface. Using plastic deformation, the modification of surface hardness and roughness are investigated at different cavitation exposure intervals and vibration amplitudes. It is found that significant improvement of the microhardness on the treated surface occurs at the end of incubation period. Higher vibration amplitudes of the horn tip lead to shorter incubation period and higher microhardness.
KW - Microhardness
KW - Plastic deformation
KW - Roughness
KW - Ultrasonic cavitation peening
UR - http://www.scopus.com/inward/record.url?scp=85037524209&partnerID=8YFLogxK
U2 - 10.1016/j.ultras.2017.12.001
DO - 10.1016/j.ultras.2017.12.001
M3 - Article
C2 - 29232591
AN - SCOPUS:85037524209
VL - 84
SP - 350
EP - 355
JO - Ultrasonics
JF - Ultrasonics
SN - 0041-624X
ER -