Improvement of the Contact Strength of Al2O3/SiC by a Combination of Shot Peening and Crack-Healing | Zendy

Tomoya Oki | Zendy; Hiroki Yamamoto | Zendy; Toshio Osada | Zendy; Koji Takahashi | Zendy

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Improvement of the Contact Strength of Al₂O₃/SiC by a Combination of Shot Peening and Crack-Healing

Author(s) -

Tomoya Oki,

Hiroki Yamamoto,

Toshio Osada,

Koji Takahashi

Publication year - 2013

Publication title -

journal of powder technology

Language(s) - English

Resource type - Journals

eISSN - 2090-7710

pISSN - 2090-7737

DOI - 10.1155/2013/946984

Subject(s) - materials science , residual stress , composite material , ceramic , shot peening , peening , composite number , weibull distribution , fracture toughness , shot (pellet) , residual strength , metallurgy , statistics , mathematics

Al2O3/SiC composite ceramics with high crack-healing ability were subjected to shot peening (SP) using zirconium oxide shots with several peening pressures and shot diameters. Specimens subjected to SP were heat-treated in air to heal the surface cracks induced by SP. The residual stress, the apparent fracture toughness, and the Weibull distribution of the contact strength were investigated, revealing that the combination of SP and crack-healing is effective for increasing the contact strength and decreasing the scatter of the contact strength of Al2O3/SiC

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