2024-03-28T14:40:47Z
https://niigata-u.repo.nii.ac.jp/oai
oai:niigata-u.repo.nii.ac.jp:00004176
2022-12-15T03:37:12Z
423:424:425
453:454
Introducing Compressive Residual Stress on Metal Surfaces by Irradiating Ultrasonic Wave with a Horn in Water : Surface Modification by Irradiating Ultrasonic Wave in Liquid (Report 1)
ホーンを介した水中超音波照射による金属材料表面への圧縮残留応力の付与 : 液中超音波照射による材料の表面改質(第1報)
ホーンを介した水中超音波照射による金属材料表面への圧縮残留応力の付与 : 液中超音波照射による材料の表面改質(第1報)
中川, 昌幸
47891
渡辺, 健彦
47892
Ultrasonic wave
Cavitation in water
Compressive residual stress
Plastic deformation
Yield stress
Ultrasonic wave of 19.5 kHz frequency oscillated with an ultrasonic transducer and amplified with a step type horn was irradiated on metal surfaces in water to introduce compressive residual stress. Slight plastic deformation occurred at the surface region of pure metal such as Cu and compressive residual stress was introduced. It seemed that the plastically deformed depth from the surface corresponded approximately to the region where the compressive residual stress is extended from the surface. The higher compressive residual stress could be introduced into the surface of Cu-Zn brass and SUS304 stainless steel because work-hardening was simultaneously induced to those alloys. Furthermore, since martensitic transformation was induced by the plastic deformation in the case of SUS304, the lager compressive residual stress could be introduced more deeply into the surface region. The residual stress of SUS304 surface reached to the maximum value of 574 MPa by irradiating for 5 min and the stress extended to the depth of about 170μm from the surface.
journal article
溶接学会
2004
application/pdf
溶接学会論文集
4
22
587
594
溶接学会論文集
AN1005067X
02884771
https://niigata-u.repo.nii.ac.jp/record/4176/files/06_0010.pdf
jpn