Tests of Fracture Toughness of Laser-Welded Joints Made of Duplex 2205 Steel

Abstract:

The process of welding introduces geometric notches to the area of joined material in the form of a face and root of a weld as well as structural heterogeneity in the form of changed properties (as compared with the parent material) in the heat affected zone and the weld zone. The parent material, as compared with the zones formed by welding, may differ in fracture toughness. In this paper the results of tests of fracture toughness of DUPLEX 2205 steel laser-welded joints are presented. Butt-welded joints were made by use of an Nd-YAG disc laser with no filler. The fatigue crack was initiated in the parent material and in the area including both the heat affected zone as well as the weld zone. The tests showed higher fracture toughness of the welded joint area as compared with the parent material.

• Periodical: Solid State Phenomena (Volume 250)
• Pages: 191-196
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.250.191
• Online since: April 2016
• Authors: Robert Soltysiak*
• Keywords: 1.4462, 2205, Duplex Steel, Fracture Toughness, Laser Welding

References

[1] Tomaszewski T., Sempruch J., Verification of the fatigue test method applied with the use of mini specimen, Key Engineering Materials. 598 (2014), 243-248.

DOI: 10.4028/www.scientific.net/kem.598.243

[2] Szala G., Ligaj B., Effect of the exponent in the description of Wohler fatigue diagram on the results of calculations of fatigue life, Fracture And Fatigue Of Materials And Structures, Key Engineering Materials Vol. 598 (2014), 231-236.

DOI: 10.4028/www.scientific.net/kem.598.231

[3] Ligaj B., Szala G., Comparative analysis of fatigue life calculation methods of C45 steel in conditions of variable amplitude loads in the low- and high-cycle fatigue ranges, Polish Maritime Research, 19/4 (2012) 23-30.

DOI: 10.2478/v10012-012-0037-z

[4] Pejkowski L., Skibicki D., Sempruch J., High-Cycle Fatigue Behavior of Austenitic Steel and Pure Copper under Uniaxial, Proportional and Non-Proportional Loading, Strojniski Vestnik-Journal Of Mechanical Engineering, Volume: 60/9, (2013), 549-560.

DOI: 10.5545/sv-jme.2013.1600

[5] Lipski A., Mrozinski S.: Approximate determination of a strain-controlled fatigue life curve for aluminum alloy sheets for aircraft structures. International Journal of Fatigue, (2012), 39, 2-7.

DOI: 10.1016/j.ijfatigue.2011.08.007

[6] Slezak T., Sniezek L., Fatigue Properties and Cracking of High Strength Steel S1100QL Welded Joints, Key Engineering Materials Vol. 598 (2014), 237-242.

DOI: 10.4028/www.scientific.net/kem.598.237

[7] Boronski D., Soltysiak R., Giesko T., Marciniak T., Lutowski Z., Bujnowski S., The Investigations of Fatigue Cracking of Laser Welded Joint With The Use of FatigueVIEW, System, Key Engineering Materials Vol. 598 (2014), 26-31.

DOI: 10.4028/www.scientific.net/kem.598.26

[8] Nasilowska B., Slezak T., Sniezek L., Torzewski J., Mechanical Properties of Laser-Welded Joints in the Difficult-to-Weld steels, Proceedings of 8th International Conference ITELMS '2013, May 23-24, Panevėžys, Lithuania, 173-178 ​.

[9] Gagnepain J. Ch., Duplex stainless steels: success story and growth perspectives, Stainless steel world 12 (2008), 31-36.

[10] Soulignac P., Gagnepain J. -C., Why duplex usage will continue to grow, Duplex Conference, Grado, Italy, 18–20 June, (2007).

[11] Practical Guidelines for the Fabrication of Duplex Stainless Steels, Third edition, Published by the International Molybdenum Association, London 2014, ISBN 978-1-907470-09-7.

[12] Liljas M., 80 years with duplex steels - a historic review and prospects for the future, ACOM 4 - 2010 OUTOKUMPU, 28-34.

[13] Iris Alvarez-Armas, Suzanne Degallaix-Moreuil Duplex Stainless Steels, ISTE Ltd (UK) and John Wiley & Sons (USA), (2009).

DOI: 10.1002/9781118557990

[14] French patent No 803361, (1936).

[15] Swedish patent No 312240, (1965).

[16] US patent No 3567434, (1971).

[17] German patent No 2255673, (1974).

[18] Liljas M, Canderyd C., Pettersson R., Willför M., Superaustenitic stainless steels in demanding environments, ACOM 4 - 2010 OUTOKUMPU, 28-34.

[19] Zhu X. -K., Joyce J., A., Review of fracture toughness (G, K, J, CTOD, CTOA) testing and standardization, Engineering Fracture Mechanics 85 (2012) 1–46.

DOI: 10.1016/j.engfracmech.2012.02.001

[20] Sieurin H., Sandstrӧm R., Fracture toughness of a welded duplex stainless steel, Engineering Fracture Mechanics 73 (2006) 377–390.

DOI: 10.1016/j.engfracmech.2005.03.009

[21] Soltysiak R., Effect of laser welding parameters of DUPLEX 2205 steel welds on fatigue life. Solid State Phenomena Vol. 223 (2015), 11-18.

DOI: 10.4028/www.scientific.net/ssp.223.11

[22] E399−12 Standard Test Method for Linear-Elastic Plane-Strain Fracture Toughness KIC of Metallic Materials.

DOI: 10.1520/e0399-08