WJM  Vol.3 No.3 , June 2013
Estimation of Fatigue Life of Laser Welded AISI304 Stainless Steel T-Joint Based on Experiments and Recommendations in Design Codes

In this paper the fatigue behavior of laser welded T-joints of stainless steel AISI304 is investigated experimentally. In the fatigue experiments 36 specimens with a sheet thickness of 1 mm are exposed to one-dimensional cyclic loading. Three different types of specimens are adopted. Three groups of specimens are used, two of these are non-welded and the third is welded with a transverse welding (T-Joint). The 13 laser welded specimens are cut out with a milling cutter. The non-welded specimens are divided in 13 specimens cut out with a milling cutter and 10 specimens cut out by a plasma cutter. The non-welded specimens are used to study the influence of heat and surface effects on the fatigue life. The fatigue life from the experiments is compared to fatigue life calculated from the guidelines in the standards DNV-RP-C203 and EUROCODE 3 EN-1993-1-9. Insignificant differences in fatigue life of the welded and non-welded specimens are observed in the experiments and the largest difference is found in the High Cycle Fatigue (HCF) area. The specimens show a lower fatigue life compared to DNV-RP-C203 and EUROCODE 3 EN-1993-1-9 when the specimens are exposed to less than 4.0 1E06 cycles. Therefore, we conclude that the fatigue life assessment according to the mentioned standards is not satisfactory and reliable.

Cite this paper
S. Lambertsen, L. Damkilde, A. Kristensen and R. Pedersen, "Estimation of Fatigue Life of Laser Welded AISI304 Stainless Steel T-Joint Based on Experiments and Recommendations in Design Codes," World Journal of Mechanics, Vol. 3 No. 3, 2013, pp. 178-183. doi: 10.4236/wjm.2013.33017.
[1]   I. N. Nawia, Saktiotob, M. Fadhalic, M. S. Hussaind, J. Alie and P.P. Yupapinf, “Nd: YAG Laser Welding of Stainless Steel 304 for Photonics Device Packaging,” Procedia Engineering, Vol. 8, 2011, pp. 374-379. doi:10.1016/j.proeng.2011.03.069

[2]   G. Apostol, G. Solomon and D. Iordchescu, “Input Parameters Influence on the Residual Stress and Distortions at Laser Welding Using Finite Element Analysis,” Series D: Mechanical Engineering, Vol. 74, 2012, pp. 153-164.

[3]   B. Aalderink, R. Aarts, J. Jonker and J. Meijer, “Experimental Observations of the Laser Keyhole Welding Process of AA5182,” International Conference on Applications of Lasers and Electro-Optics, Miami, 31 October-3 November 2005, pp. 153-164. http://doc.utwente.nl/52896/1/Wa1008.pdf

[4]   K. Balasubramanian, N. Siva Shanmugam, G. Buvana shekaran and K. Sankaranarayanasamy, “Numerical and Experimental Investigation of Laser BeamWelding of AISI304 Stainless Steel Sheet,” Advances in Production Engineering and Management, Vol. 3, No. 2, 2008, pp. 93-105. http://maja.uni-mb.si/files/apem/APEM3-2_093-105.pdf

[5]   P. Molian, “Solidification Behaviour of Laser Welded Stainless Steel,” Journal of Materials Science Letters, Vol. 4, No. 3, 1985 pp. 281-283. doi:10.1007/BF00719791

[6]   M. S. Salleh, M. I. Ramli and S. H. Yahaya “Study on Mechanical Properties and Microstructure Analysis of AISI 304L Stainless Steel Weldments,” Journal of Me chanical Engineering and Technology, Vol. 3, No. 2, 2011, pp. 71-82. http://jmet.utem.edu.my/index2.php?option=com_docman&task=doc_view&gid=62&Itemid=40

[7]   C. Suh, M. Suh and N. Hwang, “Growth Behavior of Small Surface Fatigue Cracks in AISI304 Stainless Steel,” Fatigue and Fracture of Engineering Materials and Structures, Vol. 35, No. 1, 2012, pp. 22-29. doi:10.1111/j.1460-2695.2011.01623.x

[8]   J. Linder and A. Melander, “Fatigue Strength of Spot Welded Stainless Sheet Steels Exposed to 3 Percent NaCl Solution,” International Journal of Fatigue, Vol. 20, No. 5, 1998, pp. 383-388. doi:10.1016/S0142-1123(98)00009-7

[9]   F. Karci, R. Kacar and S. Gündüz, “The Effect of Process Parameter on the Properties of Spot Welded Cold De formed AISI304 Grade Austenitic Stainless Steel,” Journal of Materials Processing Technology, Vol. 209, No. 8, 2009, pp. 4011-4019.

[10]   X. Yang, J. Zhou and X. Ling, “Study on Plastic Damage of AISI304 Stainless Steel Induced by Ultrasonic Impact Treatment,” Materials and Design, Vol. 36, 2012, pp. 477-481. doi:10.1016/j.matdes.2011.11.023

[11]   M. C. Park, K. N. Kim, G. S. Shin and S. J. Kim, “Effects of Strain Induced Martensitic Transformation on the Cavitation Erosion Resistance and Incubation Time of Fe-Cr Ni-C Alloys,” Wear, Vol. 274-275, 2012, pp. 28-33. doi:10.1016/j.wear.2011.08.011

[12]   M. Jayaprakash, J. Sumanth Kumar, S. Katakam and S. G. S. Raman, “Effect of Grain Size on Fretting Fatigue Behaviour of Aisi 304 Stainless Steel,” International Symposium of Research Students on Materials Science and Engineering, Chennai, 20-22 December 2004, pp. 1-8. http://mme.iitm.ac.in/isrs/isrs04/cd/content/Papers/MBM/PO-MBM-8.pdf

[13]   N. Rossinia, M. Dassistia, K. Benyounisb and A. Olabib, “Methods of Measuring Residual Stresses in Components,” Materials and Design, Vol. 35, 2012, pp. 572-588. doi:10.1016/j.matdes.2011.08.022

[14]   C. Müller-Bollenhagen, M. Zimmermann and H.-J. Christ, “Very High Cycle Fatigue Behavior of Austenitic Stainless Steel and the Effect of Strain-Induced Marten-Site,” International Journal of Fatigue, Vol. 32, No. 6, 2010, pp. 936-942. doi:10.1016/j.ijfatigue.2009.05.007

[15]   O. Takakuwaa, M. Nishikawab and H. Soyama, “Numerical Simulation of the Effects of Residual Stress on the Concentration of Hydrogen around a Crack Tip,” Sur face and Coatings Technology, Vol. 206, No. 11-12, 2012, pp. 2892-2898. doi:10.1016/j.surfcoat.2011.12.018

[16]   O. Keiji, M. Yoshio and N. Izuru, “Threshold Behavior of Small Fatigue Crack at Notch Root in Type AISI 304 Stainless Steel,” Engineering Fracture Mechanics, Vol. 25, No. 1, 1986, pp. 31-46. doi:10.1016/0013-7944(86)90201-8

[17]   M. C. Young, J. Y. Huang and R. C. Kuo, “Corrosion Fatigue Behavior of Cold-Worked 304L Stainless Steel,” Materials Transactions, Vol. 50, No. 3, 2009, pp. 657 663.

[18]   M. C. Park, K. N. Kim, G. S. Shin and S. J. Kim, “Effects of Strain Induced Martensitic Transformation on the Cavitation Erosion Resistance and Incubation Time of Fe Cr-Ni-C Alloys,” Wear, Vol. 274-275, 2012, pp 28-33. doi:10.1016/j.wear.2011.08.011

[19]   L. Singh, R. A. Khan and M. L. Aggarwal, “Influence of Residual Stress on Fatigue Design of AISI 304 Stainless Steel,” The Journal of Engineering Research, Vol. 8, No. 1, 2011, pp. 44-52.

[20]   C. Müller-Bollenhagen, M. Zimmermann and H.-J. Christ, “Adjusting the Very High Cycle Fatigue Properties of a Metastable Austenitic Stainless Steel by Means of the Martensite Content,” Procedia Engineering, Vol. 2, No. 1, 2010, pp. 1663-1672.

[21]   L. Tsay, Y. Liu, D. Y. Lin and M. Young, “The Use of Laser Surface-Annealed Treatment to Retard Fatigue Crack Growth of Austenitic Stainless Steel,” Materials Science and Engineering, Vol. 384, No. 1-2, 2004, pp. 177-183. doi:10.1016/j.msea.2004.06.010

[22]   A. Hascalik, E. Unal and N. Ozdemir, “Fatigue Behaviour of AISI 304 Steel to AISI 4340 Steel Welded by Friction Welding,” Journal of Materials Science, Vol. 41, No. 11, 2006, pp. 3233-3239. doi:10.1007/s10853-005-5478-7

[23]   Y. C. Chiou, “Experimantal Study of Deformation Behavior and Fatigue Life of AISI304 Stainless Steel under an Asymmetric Cyclic Loading,” Journal of Marine Science and Technology, Vol. 18, No. 1, 2010, pp. 122-129.