Details

Autor(en) / Beteiligte

• Zhu, Qi Fang
• Zhu, Bao Hong
• Klimenov, Vacily A.
• Borozna, Viacheslav
• Ma, Tong Da
• Sun, Ze Ming

Titel

Effect of Ultrasonic Surface Peening on Fatigue Property of 7B04 High Strength and Toughness Aluminum Alloy

Ist Teil von

• Materials science forum, 2010-01, Vol.654-656, p.1892-1895

Ort / Verlag

Trans Tech Publications Ltd

Erscheinungsjahr

2010

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• This paper discusses the influence of ultrasonic surface peening on the fatigue property of 7B04 high strength and toughness aluminum alloy. The results showed that a nano-layer of 10-20 μm was formed after ultrasonic surface peening. This nano-layer had a gradient structure with grain size of 10 to 50nm. Further, the ultrasonic surface peening process created residual compressive stress of 200MPa in this nano-layer. This stress caused micro surface cracks to be compressed or closed . Consequently, after ultrasonic surface peening the fatigue life of 7B04 alloy was extended to 5 times.