Research and Application of Materials Science

Gradient Ultra-fine Grained Surface Layer in 6063 Aluminum Alloy Obtained by Means of Rotational Accelerated Shot Peening

LIUYing, XUHailu, XIANHe, LIUYanfang, LIZheng


Gradient ultra-fine grained surface layer in 6063 aluminum alloy was obtained by means of a novel surface self-nanocrystallization technique, namely rotational accelerated shot peening (RASP) treatment. The average grain sizes along the vertical section vary from hundreds of nanometers in the top surface to micrometers in the matrix. By using orthogonal experimental design to compare roughness values and hardness values, we synthesized the processing parameters to obtain sample of smaller roughness values and higher hardness.


rotational accelerated shot peening; gradient ultra-fine grained structure; orthogonal experimental design; processing parameters

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