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Finishing and quality of mechanically brushed 316L stainless steel welded joints using MIG process: hardness modeling by L9 TAGUCHI design

  • Hichem GuizaniEmail author
  • Mohamed Ben Nasser
  • Brahim Tlili
  • Abdelbacet Oueslati
  • Moez Chafra
ORIGINAL ARTICLE
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Abstract

The present work aims to optimize the mechanical brush finishing of Metal Inert Gas (MIG) welded joints on AISI316L thin steel sheet. The innovative methodology is based on the experimental design methodology of the Taguchi design (L9) and the analysis of variance (ANOVA) with objective function of microhardness in brushed layers. A “Signal to Noise” approach is adopted with the objective of “Large is Better”. The speed of rotation of the brush, the speed of advance of the sample, the number of brushing passes, and the depression ratio of the brush fibers are the four three-level factors of the L9 design. The study of the effects of these factors showed the major influence of the depression and the number of passes on the magnitude of hardening of the brushed layers in the various zones of the weld. Minor interactions, found in the regression model, are noted between the different factors. Measurements of microhardness in the depths of each zone reveal distinct cure rates from one zone to another. The melted zone of the weld undergone the minimum hardening, unlike the heat affected zone (HAZ), whose microhardness contribution reaches 30% compared with the non-brushed welded sample. It is revealed that the main results lie in the microhardness contribution, of the order of 30% at the joint, while keeping the same level of magnitude of the mechanical strength using the optimal parameters.

Keywords

MIG/GMAW welding Mechanical brushing Taguchi orthogonal design Regression microhardness 

Abbreviations

MIG

Metal Inert Gas

WJ

Welded joints

Re

Elastic resistance limit

Rm

Ultimate strength

E

Young modulus

ν

Poisson ratio

A%

Elongation percentage at break

Z%

Reduction of area

HRB

Brinel hardness

ρ

Density

α

Thermal conductivity

Kv

Fracture toughness

Vd

Reeling speed

Dwire

Wire diameter

Ɵ

Tilt angle of the torch

Enom

Nominal energy welding

D

Distance between torch and sheet metal

ANOVA

Analysis of variance

Ei (i = 1..9)

Welded and brushed specimen

HAZ

Heat affected zone

MZ

Melted zone

BM

Base material

FSW

Fusion stir welding

TMAZ

Thermo-mechanically affected zone

Notes

Acknowledgments

We thank Mr. Tahar Chebbi for his assistance and contribution to welding operations and Mr. Hassan Bouzaien for his help with the hardness measurement.

References

  1. 1.
    Farah A (2013) Fatigue behaviour of friction stir welded AA7075-T6 with post-weld treatments. PhD thesis, Polytechnic School of Montreal, CanadaGoogle Scholar
  2. 2.
    Kim IT, Kim HS, Dao DK, Ahn JH, Jeong YS (2018) Fatigue resistance improvement of welded joints by bristle roll-brush grinding. Int J Steel Struct 18:1–8CrossRefGoogle Scholar
  3. 3.
    Sidhom N, Moussa NB, Janeb S, Braham C, Sidhom H (2014) Potential fatigue strength improvement of AA 5083-H111 notched parts by wire brush hammering: experimental analysis and numerical simulation. Mater Des 64:503–519CrossRefGoogle Scholar
  4. 4.
    Makhlouf K, Sidhom N, Khlifi A, Sidhom H, Braham C (2013) Low cycle fatigue life improvement of AISI 304 by initial and intermittent wire brush hammering. Mater Des (1980-2015) 52:1088–1098CrossRefGoogle Scholar
  5. 5.
    Sule J, Ganguly S, Coules H, Pirling T (2015) Application of local mechanical tensioning and laser processing to refine microstructure and modify residual stress state of a multi-pass 304L austenitic steels welds. J Manuf Process 18:141–150CrossRefGoogle Scholar
  6. 6.
    Rhouma AB, Sidhom H, Braham C, Lédion J, Fitzpatrick ME (2001) Effects of surface preparation on pitting resistance, residual stress, and stress corrosion cracking in austenitic stainless steels. J Mater Eng Perform 10(5):507–514CrossRefGoogle Scholar
  7. 7.
    Le Quilliec G (2011) Application du martelage à haute fréquence à l'optimisation de la maintenance des ouvrages et des structures soudées. PhD thesis, Central school of Nantes, FranceGoogle Scholar
  8. 8.
    Kirkhope KJ, Bell R, Caron L, Basu RI, Ma KT (1999) Weld detail fatigue life improvement techniques. Part 1. Mar Struct 12(6):447–474CrossRefGoogle Scholar
  9. 9.
    Booth, G. S. (editor), Improving fatigue performance of welded joints (pp. 5-10), The Welding Institute, Abington Hall, 1983. https://www.google.com/search?ei=IpZaXcenL9CMlwSipIG4DQ&q=Booth%2C+G.+S.%2C++A+review+of+fatigue+strength+improvement+techniques”.+In+Booth%2C+G.+S.+%28editor%29%2C+Improving+fatigue+performance+of+welded+joints+%28pp.+5-10%29%2C+The+Welding+Institute%2C+Abington+Hall%2C+1983.&oq=Booth%2C+G.+S.%2C++A+review+of+fatigue+strength+improvement+techniques”.+In+Booth%2C+G.+S.+%28editor%29%2C+Improving+fatigue+performance+of+welded+joints+%28pp.+5-10%29%2C+The+Welding+Institute%2C+Abington+Hall%2C+1983Google Scholar
  10. 10.
    Bignonnet A, Lieurade HP, Picouet L (1986) Improvement of the fatigue life for offshore welded connections, vol 2. Pergamon Press, Oxford Advances in Surface Treatments. Technology Applications Effects, pp 63–71Google Scholar
  11. 11.
    Fuertes N, Bengtsson V, Pettersson R, Rohwerder M (2017) Use of SVET to evaluate corrosion resistance of heat tinted stainless steel welds and effect of post-weld cleaning. Mater Corros 68(1):7–19CrossRefGoogle Scholar
  12. 12.
    Westin EM, Olsson COA, Hertzman S (2008) Weld oxide formation on lean duplex stainless steel. Corros Sci 50(9):2620–2634CrossRefGoogle Scholar
  13. 13.
    Zhang L, Lu JZ, Luo KY, Feng AX, Dai FZ, Zhong JS, Luo M, Zhang YK (2013) Residual stress, micro-hardness and tensile properties of ANSI 304 stainless steel thick sheet by fiber laser welding. Mater Sci Eng A 561:136–144CrossRefGoogle Scholar
  14. 14.
    Azar V, Hashemi B, Yazdi MR (2010) The effect of shot peening on fatigue and corrosion behavior of 316L stainless steel in Ringer’s solution. Surf Coat Technol 204(21-22):3546–3551CrossRefGoogle Scholar
  15. 15.
    Sato H, Namba A, Okada M, Watanabe Y (2015) Temperature dependence of reverse transformation induced by shot-peening for SUS 304 austenitic stainless steel. Mater Today: Proc 2:S707–S710Google Scholar
  16. 16.
    Sadeler R, Akbulut M, Atasoy S (2013) Influence of mechanical (ball burnishing) surface treatment on fatigue behaviour of AISI 1045 steel. Kovove Mater 51(1):31–35Google Scholar
  17. 17.
    Novelli M, Bocher P, Grosdidier T (2018) Effect of cryogenic temperatures and processing parameters on gradient-structure of a stainless steel treated by ultrasonic surface mechanical attrition treatment. Mater Charact 139:197–207CrossRefGoogle Scholar
  18. 18.
    Misra A, Pandey PM, Dixit US (2017) Modeling and simulation of surface roughness in ultrasonic assisted magnetic abrasive finishing process. Int J Mech Sci 133:344–356CrossRefGoogle Scholar
  19. 19.
    Tryfyakov VI, Mikheev PP, Kudryavtsev VF, Reznik DN (1993) Ultrasonic impact peening treatment of welds and its effect on fatigue resistance in air and seawater. In: Offshore Technology ConferenceGoogle Scholar
  20. 20.
    Fredj NB, Nasr MB, Rhouma AB, Sidhom H, Braham C (2004) Fatigue life improvements of the AISI 304 stainless steel ground surfaces by wire brushing. J Mater Eng Perform 13(5):564–574CrossRefGoogle Scholar
  21. 21.
    Fredj NB, Sidhom H, Braham C (2006) Effect of the cryogenic wire brushing on the surface integrity and the fatigue life improvement of the AISI 304 stainless steel ground components. In: Fracture of Nano and Engineering Materials and Structures, pp 1303–1304CrossRefGoogle Scholar

Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2019

Authors and Affiliations

  • Hichem Guizani
    • 1
    • 2
    Email author
  • Mohamed Ben Nasser
    • 1
    • 2
  • Brahim Tlili
    • 2
  • Abdelbacet Oueslati
    • 3
  • Moez Chafra
    • 4
  1. 1.University Campus of BoulifaKefTunisia
  2. 2.LR-11-ES19 Laboratory of Applied Mechanics and Engineering (LR-MAI) National School of Engineers of TunisUniversity of Tunis El ManarTunisTunisia
  3. 3.Laboratory of Mechanics of LilleUniversity of LilleLilleFrance
  4. 4.Applied Mechanics and Systems Research Laboratory, Tunisia Polytechnic SchoolUniversity of CarthageTunisTunisia

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