Characteristics of friction and wear of Al-Zn-Mg-Cu alloy after application of ultrasonic shot peening technology

被引：35

作者：

Chen, Chao ^{[1
]}

Zhang, Huijing ^{[1
]}

机构：

[1] Northeast Forestry Univ, Coll Mech & Elect Engn, Harbin 150040, Peoples R China

来源：

SURFACE & COATINGS TECHNOLOGY | 2021年 / 423卷

关键词：

7A52 aluminum alloy; Ultrasonic shot peening; Microstructure of severe plastic deformation zone; Friction and wear behavior; MECHANICAL ATTRITION TREATMENT; CORROSION BEHAVIOR; GRAIN-REFINEMENT; SURFACE; DEFORMATION; NANOCRYSTALLIZATION; PARTICLES;

D O I：

10.1016/j.surfcoat.2021.127615

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

7A52 aluminum alloys were treated by ultrasonic shot peening (USSP) technology. Then, friction and wear behavior of 7A52 aluminum alloys was obtained by a ball-on-disk friction and wear test. The surface grains of the 7A52 aluminum alloys were refined into nanocrystals with an average size of about 23 nm, and a severe plastic deformation zone with a thickness of about 100 mu m was produced by USSP treatment. Compared with the un-USSP specimen, the coefficient of friction (COF) values of the USSP-treated specimen were obviously decreased by 18.04%, 9.09%, 8.67%, 15.79% under the friction load of 5 N, 10 N, 30 N and 50 N. As the wear load increases, the specimens before and after treatment show different wear mechanisms.

引用

页数：10

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