Surface Properties of AA7075 Aluminium Alloy Shot Peened under Different Peening Parameters

Abstract

AA7075 aluminium alloy was shot peened with different size stainless steel shots at different peening pressures while focusing on investigating the surface properties of AA7075 alloy such as surface morphology, topography, and roughness. Since shot peening (SP) is an important mechanical surface treatment which leads to the local plastic deformation in the surface and sub-surface regions and eventually affects surface properties, the present study aims to clarify the effects of SP parameters on the surface properties of AA7075 T6 alloy. A custom-design SP system was used to shot peen the alloy by stainless steel shots with size of 0.1-0.3 mm and 0.4-0.9 mm at peening pressures of 2 bar and 4 bar. The surface properties depending on shot size and peening pressure were investigated by a scanning electron microscope (SEM) equipped with energy dispersive X-Ray spectroscopy (EDX) and a 3D optical profilometer. The surface morphology affected by both parameters; larger shots and higher pressures caused higher plastic deformation, which led to the formation of more complex and rough surfaces in comparison to the surfaces shot peened with smaller shots at lower pressures. 3D surface topographies were visualized the deformation, which revealed the effects of shot size and pressure. The surface roughness increased with increases in both particles size and pressure, which caused highly deformed and rough surface topographies with a great number of dimples. Embedding of fragmented shot particles occurred during peening. 

Keywords

• AA7075 Alloy,Shot Peening,Shot Size,Peening Pressure

References

1. [1] M. Mhaede, Materials & Design, 41, 61 (2012). 10.1016/j.matdes.2012.04.056
2. [2] S. Mitrovic, D. Adamovic, F. Zivic, D. Dzunic, M. Pantic, Applied Surface Science, 290, 223 (2014). DOI: 10.1016/j.apsusc.2013.11.050
3. [3] B.K.C. Ganesh, W. Sha, N. Ramanaiah, A. Krishnaiah, Materials & Design, 56, 480 (2014). DOI:10.1016/j.matdes.2013.11.052
4. [4] A. Gariépy, F. Bridier, M. Hoseini, P. Bocher, C. Perron, M. Lévesque, Surface and Coatings Technology, 219, 15 (2013). DOI:10.1016/j.surfcoat.2012.12.046
5. [5] S. Žagar, J. Grum, Materials Science Forum, 768-769, 519 (2013). DOI: 10.4028/www.scientific.net/MSF.768-769.519
6. [6] L. Xie, C. Jiang, W. Lu, Applied Surface Science, 280, 981 (2013). DOI: 10.1016/j.apsusc.2013.05.135
7. [7] Y. Sun, Tribology International, 57, 67 (2013). DOI: 10.1016/j.triboint.2012.07.015
8. [8] L. Trško, O. Bokůvka, F. Nový, M. Guagliano, Materials & Design, 57, 103 (2014). DOI: 10.1016/j.matdes.2013.12.035

9. [9] L. Trško, M. Guagliano, O. Bokůvka, F. Nový, Procedia Engineering, 74, 246 (2014). DOI: 10.1016/j.proeng.2014.06.257
10. [10] M. Benedetti, V. Fontanari, M. Bandini, E. Savio, International Journal of Fatigue, 70, 451 (2015). DOI: 10.1016/j.ijfatigue.2014.07.002
11. [11] M.K. Kulekci, U. Esme, The International Journal of Advanced Manufacturing Technology, 74, 1551 (2014). DOI: 10.1007/s00170-014-6088-9
12. [12] A. Gariépy, S. Larose, C. Perron, P. Bocher, M. Lévesque, Journal of Materials Processing Technology, 213, 926 (2013). DOI: 10.1016/j.jmatprotec.2013.01.003
13. [13] C.W. Ziemian, M.M. Sharma, B.D. Bouffard, T. Nissley, T.J. Eden, Materials & Design, 54, 212 (2014). DOI: 10.1016/j.matdes.2013.08.061
14. [14] X.-f. Sheng, Q.-x. Xia, X.-q. Cheng, L.-s. Lin, Transactions of Nonferrous Metals Society of China, 22, s261 (2012). DOI: 10.1016/s1003-6326(12)61717-8
15. [15] J. Milligan, M. Brochu, Materials Science and Engineering: A, 578, 323 (2013). DOI: 10.1016/j.msea.2013.04.113
16. [16] Y.C. Lin, Y.-Q. Jiang, X.-M. Chen, D.-X. Wen, H.-M. Zhou, Materials Science and Engineering: A, 588, 347 (2013). DOI: 10.1016/j.msea.2013.09.045
17. [17] U.M.R. Paturi, S.K.R. Narala, R.S. Pundir, Materials Science and Engineering: A, 605, 176 (2014). DOI: 10.1016/j.msea.2014.03.033
18. [18] Y. Jin, P. Cai, W. Wen, H. Nagaumi, B. Xu, Y. Zhang, T. Zhai, Materials Science and Engineering: A, 622, 7 (2015). DOI: 10.1016/j.msea.2014.11.007
19. [19] B. Hu, I.M. Richardson, Materials Science and Engineering: A, 459, 94 (2007). DOI: 10.1016/j.msea.2006.12.094
20. [20] B. Mishra, C. Mondal, R. Goyal, P. Ghosal, K.S. Kumar, V. Madhu, Materials Science and Engineering: A, 612, 343 (2014). DOI: 10.1016/j.msea.2014.06.037
21. [21] W. Huo, L. Hou, H. Cui, L. Zhuang, J. Zhang, Materials Science and Engineering: A, 618, 244 (2014). DOI: 10.1016/j.msea.2014.09.026
22. [22] M. Taheri-Mandarjani, A. Zarei-Hanzaki, H.R. Abedi, Materials Science and Engineering: A, 637, 107 (2015). DOI: 10.1016/j.msea.2015.03.038
23. [23] M. Bahrami, M. Farahmand Nikoo, M.K. Besharati Givi, Materials Science and Engineering: A, 626, 220 (2015). DOI:10.1016/j.msea.2014.12.009
24. [24] S. Bayazid, H. Farhangi, H. Asgharzadeh, L. Radan, A. Ghahramani, A. Mirhaji, Materials Science and Engineering: A, 649, 293 (2016). DOI: 10.1016/j.msea.2015.10.010
25. [25] E. Avcu, Tribology International, 110, 173 (2017). DOI: 10.1016/j.triboint.2017.02.023
26. [26] K.T. Cho, K. Song, S.H. Oh, Y.-K. Lee, K.M. Lim, W.B. Lee, Materials Science and Engineering: A, 543, 44 (2012). DOI: 10.1016/j.msea.2012.02.043
27. [27] S. Kikuchi, Y. Nakamura, K. Nambu, M. Ando, Materials Science and Engineering: A, 652, 279 (2016). DOI: 10.1016/j.msea.2015.11.076
28. [28] Y.-S. Nam, Y.-I. Jeong, B.-C. Shin, J.-H. Byun, Materials & Design, 83, 566 (2015). DOI: 10.1016/j.matdes.2015.06.065
29. [29] K. Oguri, Journal of Materials Processing Technology, 211, 1395 (2011). DOI: 10.1016/j.jmatprotec.2011.03.011
30. [30] U. Zupanc, J. Grum, Strojniški vestnik – Journal of Mechanical Engineering, 57, 379 (2011). DOI: 10.5545/sv-jme.2010.142
31. [31] International Organization for Standardization (ISO), British Standards Institute, 2012.
32. [32] A.A. Ahmed, M. Mhaede, M. Basha, M. Wollmann, L. Wagner, Surface and Coatings Technology, 280, 347 (2015). DOI: 10.1016/j.surfcoat.2015.09.026
33. [33] S. Bagherifard, C. Colombo, M. Guagliano, Applied Surface Science, 289, 180 (2014). DOI: 10.1016/j.apsusc.2013.10.131
34. [34] M. Abdulstaar, M. Mhaede, M. Wollmann, L. Wagner, Surface and Coatings Technology, 254, 244 (2014). DOI: 10.1016/j.surfcoat.2014.06.026
35. [35] G.D. Byrne, L. O'Neill, B. Twomey, D.P. Dowling, Surface and Coatings Technology, 216, 224 (2013). DOI: 10.1016/j.surfcoat.2012.11.048
36. [36] R.G. Bonora, H.J.C. Voorwald, M.O.H. Cioffi, Advanced Materials Research, 891-892, 668 (2014). DOI: 10.4028/www.scientific.net/AMR.891-892.668
37. [37] S.V. Komarov, S.E. Romankov, Journal of the European Ceramic Society, 34, 391 (2014). DOI: 10.1016/j.jeurceramsoc.2013.08.022
38. [38] K.A. Soady, B.G. Mellor, G.D. West, G. Harrison, A. Morris, P.A.S. Reed, International Journal of Fatigue, 54, 106 (2013). DOI: 10.1016/j.ijfatigue.2013.03.019
39. [39] O. Unal, R. Varol, Applied Surface Science, 290, 40 (2014). DOI: 10.1016/j.apsusc.2013.10.184
40. [40] A.T. Vielma, V. Llaneza, F.J. Belzunce, Surface and Coatings Technology, 249, 75 (2014). DOI: 10.1016/j.surfcoat.2014.03.051
41. [41] H.-G. Brokmeier, M.C. Avalos, R.E. Bolmaro, E. Maawad, IOP Conference Series: Materials Science and Engineering, 63, 012015 (2014). DOI: 10.1088/1757-899x/63/1/012015
42. [42] V.B. Nguyen, H.J. Poh, Y.-W. Zhang, Powder Technology, 256, 100 (2014). DOI: 10.1016/j.powtec.2014.01.097