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

Abstract


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.

Keywords


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

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References


K LU, J LU. Nanostructured surface layer on metallic materials induced by surface mechanical attrition treatment[J]. Mater. Sci. Eng. A, 2004, 10(3):38-45.

K LU, J LU. Surface Nanocrystallization (SNC) of Metallic Materials Presentation of the Concept behind a New Approach [J]. Mater. Sci. Technol,1999, 15(3):193-197.

Liu G, Yong X P, Lu K. Surface nanocrystallization In Metal and Its Present [J]. China Surface Engineering, 2001, 52(3): 1-5

Ba D M, Ma S N, Li C Q. Surface nanocrystallization Research In Supersonic Particles Bombard the Surface of 45 # steel[J]. Journal of materials science and technology, 2007, 15 (3): 342-342.

F. J. Humphreys. A unified theory recovery, recrystallization and grain growth, based on the stability and growth of cellular microstructure. The base model [J]. Acta mater, 1997, 45(10): 4231-4240.

L Liu, P Y Li. Orthogonal experiment and optimization of heat treatment process of the 34CrNi3Mo steel [J]. Material heat treatment technology, 2011, 1(6):164-166.

K. Dai, J. Villegas, Z. Stone, L. Shaw. Finite element modeling of the surface roughness of 5052 Al alloy subjected to a surface severe plastic deformation process [J]. Acta Materialia, 2004, 52: 5771-5782.

L Yang, A J Cai. Research on WEDM Process Parameters on the effects of the machining speed and surface roughness [J]. Machine tools and hydraulics, 2011, 39(15):45-47.

H Liu. Research status of metal material surface nanocrystallization [J].Petroleum engineering construction, 2010, 36(3):11-15.

G Y Qiao, Q P Sheng. The research status of metal surface self nanocrystallization by application of ultrasonic [J]. Oral material equipment, 2011, 20(2):101-105.

J C Villegas, L L Shaw. Nanocrystalline process and mechaniism in a nickel alloy subjected to surface severe plastic deformation [J]. Acta Materialia, 2009,57: 5782-5795.

Farahbakhsh I, Zakeria A, Manikandan P, Evaluation of Nanostructured coating layers formed on Ni projectiles during mechanical alloying of Cu powder [J]. Applied Surface Science, 2010, 358: 2354-2359.

Romankov S, KomarovS V. Fabrication of TiN coatings using mechanical milling techniques [J]. Int. J. Refract. Met. HardMater, 2009, 27: 492-497.

Xu C, Horita Z, Langdon T G. Microstructural Evolution in 6063 aluminum alloy uminum in the Early Stages of Processing by High-Pressure Torsion [J]. Materials transactions, 2010, 51(1): 2-7.

K. Wang, N.R. Tao, et al. Plastic strain-induced grain refinement at the nanometer scale in copper [J]. Acta Materialia, 2006, 54: 5281-5291.




DOI: https://doi.org/10.33142/rams.v3i1.4497

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