Effect of Cooling Rate on Mechanical and Microstructural Characterization of Friction Stir Welded 316 L Austenitic Stainless Steel Joints

S. Shashi Kumar; N. Murugan; K.K. Ramachandran

doi:10.4028/www.scientific.net/MSF.830-831.314

Paper Titles

Influence of Filler Wire Material on Dissimilar Welding of 15-5PH to KC20WN (Haynes 25)
p.298

Experimental Study on the Effect of Tool Pin Profile on Aluminium AA6063 Friction Stir Welded Butt Joint
p.302

Explosive Welding of SS304 and Al6061 Using Copper as Interlayer – Development of Trial Methodology and its Optimisation
p.306

Effect of Brazing and Heat Treatment Cycle on the Mechanical Properties of Base Materials
p.310

Effect of Cooling Rate on Mechanical and Microstructural Characterization of Friction Stir Welded 316 L Austenitic Stainless Steel Joints
p.314

Assessment of Latent Heat and Solid Fraction of Al-22Si Alloy Using Newtonian and Fourier Analysis Techniques
p.321

Characterization of Hot Workability of Boron-Added Modified 9Cr-1Mo Steel (P91B) Using Dynamic Materials Model
p.325

Determination of Instability in Zr-2.5Nb-0.5Cu Using Lyapunov Function
p.329

Dry Sliding Wear Behavior of Ti-6Al-4V Alloy
p.333

HomeMaterials Science ForumMaterials Science Forum Vols. 830-831Effect of Cooling Rate on Mechanical and...

Effect of Cooling Rate on Mechanical and Microstructural Characterization of Friction Stir Welded 316 L Austenitic Stainless Steel Joints

Abstract:

The present investigation is carried out to investigate on mechanical and metallurgical properties of Friction stir (FS) / Underwater Friction stir (UFS) welded 3 mm thick AISI 316 L stainless steel joints. Experiments were carried out at a tool rotational speed of 700 rpm, welding speed of 45 mm/min and axial force of 12 kN. Defect free joints were confirmed by visual inspection. A marginal rise of about 4.5 % increase in the joint strength is achieved in water cooling than by gas cooling technique. Reduced peak temperature in water cooled joint led to better grain refinement in the weld nugget enhancing FSW tool life. No sign of secondary phase precipitation was observed in the weld joints which was confirmed by Energy Dispersive Spectroscopy (EDS) spectrums and micro etchants like Groesbeck and modified Murakami reagents in the weld nugget.

You might also be interested in these eBooks

Advanced Materials and Manufacturing Processes for Strategic Sectors

View Preview

Info:

Periodical:

Materials Science Forum (Volumes 830-831)

Pages:

314-318

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.830-831.314

Citation:

Cite this paper

Online since:

September 2015

Authors:

S. Shashi Kumar*, N. Murugan, K.K. Ramachandran

Keywords:

FSW, Microstructure, Tensile Strength, Tungsten Based Tool, Underwater

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

* - Corresponding Author

References

[1] TWI; W.M. Thomas, E.D. Nicholas, J.C. Needham, P. Temple-Smith, S. Kallee, WKW; C.J. Dawes, UK Patent Application 2 306 366 A, Filed: 17 Oct. 1996 (UK 9521570, 20 Oct. 1995; 9523827, 22 Nov. 1995; 9605864, 20 Mar. 1996).

Google Scholar

[2] Y.D. Chung, H. Fujii, R. Ueji and N. Tsuji Friction stir welding of high carbon steel with excellent toughness and ductility, Scripta Materialia 63 (2010) 223–226.

DOI: 10.1016/j.scriptamat.2010.03.060

Google Scholar

[3] A.P. Reynolds, Wei Tang, T, Gnaupel-Herold and H. Prask Structure, properties, and residual stress of 304L stainless steel friction stir welds, Scripta Materialia 48 (2003) 1289- 1294.

DOI: 10.1016/s1359-6462(03)00024-1

Google Scholar

[4] B. W. Ahn, D. H. Choi, D. J. Kim and S. B. Jung Microstructures and properties of friction stir welded 409L stainless steel using a Si3N4 tool, Material Science and Engineering A, 532, (2012) 476– 479.

DOI: 10.1016/j.msea.2011.10.109

Google Scholar

[5] R Rai, A De, HKDH Bhadeshia and T DebRoy Review: friction stir welding tools, Science and Technology of Welding and Joining, 16 (2011), 325 – 342.

DOI: 10.1179/1362171811y.0000000023

Google Scholar

[6] Seung Hwan C. Park, Yutaka S. Sato, Hiroyuki Kokawa, Kazutaka Okamoto, Satoshi Hirano and Masahisa Inagaki Rapid formation of the sigma phase in 304 stainless steel during friction stir welding, Scripta Materialia 49 (2003) 1175–1180.

DOI: 10.1016/j.scriptamat.2003.08.022

Google Scholar

[7] K.H. Song, H. Fujii and K. Nakata Effect of welding speed on microstructural and mechanical properties of friction stir welded Inconel 600, Materials and Design 30(2009), 3972–3978.

DOI: 10.1016/j.matdes.2009.05.033

Google Scholar

[8] Y. Miyano, H. Fujji, Y. Sun, Y. Katada and S. Kuroda Mechanical properties of friction stir butt welds of high nitrogen-containing austenitic stainless steel, Material Science and Engineering A 528(2011) 2917-2921.

DOI: 10.1016/j.msea.2010.12.071

Google Scholar