The aim of the present research was investigating the effects of Ti addition on the microstructure and mechanical properties of the E6010 high cellulosic electrode weld metal. Different concentrations of ferrotitanium were added to the electrode coating. Then, the effects of recovered Ti on the microstructure, tensile strength, hardness and impact strength of the weld metal were explored. Results showed that the recovery percent of Ti was below 10%. However, the Ti added to the melt altered the microstructural constituents and different ferrite morphologies including acicular ferrite, Widmanstätten ferrite, polygonal ferrite, and ferrite with secondary phase aligned along with the bainitic microstructure were developed at various Ti concentrations. Also, the addition of Ti improved hardness, tensile strength and yield strength while it deteriorated elongation and impact strength of the weld deposit. Finally, it was postulated that the Ti concentration in the weld metal should be lower than 0.065 wt% to achieve a deposit satisfying AWS A5.1 standard requirements.
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The authors greatly appreciate Mr. Taghizadeh from Electrode Reza Co. for fabrication of laboratory electrodes, preparation of all samples and performing experimental tests.
J. Houldcroft, R. John, Welding and Cutting, 1st edn. (Woodhead Publishing Limited, Cambridge, 2001), p. 53Google Scholar
R. Ghomashchi, W. Costin, R. Kurji, Evolution of weld metal microstructure in shielded metal arc welding of X70 HSLA steel with cellulosic electrodes: A case study. Mater. Charact. 107, 317–321 (2015)CrossRefGoogle Scholar
J.C.F. Jorge, L.F.G. Souza, J.M.A. Rebello, The effect of chromium on the microstructure/toughness relationship of C–Mn weld metal deposits. Mater. Charact. 47, 195–205 (2001)CrossRefGoogle Scholar
B. Beidokhti, R. Pouriamanesh, Effect of filler metal on mechanical properties of HSLA welds. Weld. J. 94, 334 s–341 s (2015)Google Scholar
J.P. Snyder, A.W. Pense, The effects of titanium on submerged arc weld metal. Weld. J. 61, 201 s–211 s (1982)Google Scholar
M.H. Avazkonandeh-Gharavol, M. Haddad-Sabzevar, A. Haerian, Effect of copper content on the microstructure and mechanical properties of multipass MMA, low alloy steel weld metal deposits. Mater. Design. 30, 1902–1912 (2009)CrossRefGoogle Scholar
M.H. Avazkonandeh-Gharavol, M. Haddad-Sabzevar, A. Haerian, Effect of chromium content on the microstructure and mechanical properties of multipass MMA, low alloy steel weld metal. J. Mater. Sci. 44, 186–197 (2009)ADSCrossRefGoogle Scholar
B. Beidokhti, A.H. Koukabi, A. Dolati, Effect of titanium addition on the microstructure and inclusion formation in submerged arc welded HSLA pipeline steel. J. Mater. Process. Tech. 209, 4027–4035 (2009)CrossRefGoogle Scholar
S.D. Bhole, J.B. Nemade, L. Collins, C. Liu, Effect of nickel and molybdenum additions on weld metal toughness in a submerged arc welded HSLA line-pipe steel. J. Mater. Process. Tech. 173, 92–100 (2006)CrossRefGoogle Scholar
W.W. Bose-Filho, A.L.M. Carvalho, M. Strangwood, Effects of alloying elements on the microstructure and inclusion formation in HSLA multipass welds. Mater. Charact. 58, 29–39 (2007)CrossRefGoogle Scholar
G.M. Evans, The effect of titanium in SMA C-Mn steel multipass deposits. Weld. J. 71, 447 s–454 s (1992)ADSGoogle Scholar
G.M. Evans, The effect of titanium in manganese-containing SMA weld deposits. Weld. J. 72, 123 s–133 s (1993)Google Scholar
M.N. Ilman, R.C. Cochrane, G.M. Evans, Effect of titanium and nitrogen on the transformation characteristics of acicular ferrite in reheated C–Mn steel weld metals. Weld. Word. 58, 1–10 (2014)CrossRefGoogle Scholar
B. Beidokhti, A.H. Koukabi, A. Dolati, A comprehensive study on the microstructure of high strength low alloy pipeline welds. J. Alloy Compd. 597, 142–147 (2014)CrossRefGoogle Scholar
AWS A5.1 Standard, Specification for Carbon Steel Electrodes for Shielded Metal Arc Welding (American Welding Society, Miami, 2004)Google Scholar
ASTM E415, Standard Test Method for Analysis of Carbon and Low-Alloy Steel by Spark Atomic Emission Spectrometry (ASTM International, West Conshohocken, PA, 2014)Google Scholar
ASTM E562, Standard Test Method for Determining Volume Fraction by Systematic Manual Point Count (ASTM International, West Conshohocken, PA, 2011)Google Scholar
G. Krauss, Principles of Heat Treatment of Steel. (ASM International, Michigan, 1990)Google Scholar
M. Fattahi, N. Nabhani, M. Hosseini, N. Arabian, E. Rahimi, Effect of Ti-containing inclusions on the nucleation of acicular ferrite and mechanical properties of multipass weld metals. Micron 45, 107–114 (2013)CrossRefGoogle Scholar
S.Y. Lee, Y.J. Oh, K.W. Ye, Effects of titanium and oxygen content on microstructure in low carbon steels. Mater. Trans. 43, 518–522 (2002)CrossRefGoogle Scholar