The Effect of Titanium Inclusions on HY-80 GMA Weld Deposits
Ellis, Dana J.
Fox, Alan G.
MetadataShow full item record
HY-80-steels are used in submarine and ship construction and it has been found that small additions of titanium to this steel during manufacture markedly improve the fracture toughness of the 'heat affected zone (HAZ) of Gas-Metal-Arc-Welding (GMAW) deposits made from this steel. This has been ascribed to prior austenite grain boundary pinning by titanium nitride inclusions. In the present work the weld metals, HAZ and parent metals of GMAW welds made on HY-S0 steels have been studied by optical, scanning electron and transmission electron microscopy. These studies have shown that the Ti treated HY-80 has overall a lower level on non-metallic inclusions than untreated HYSO which could certainly be responsible for improved toughness. Unfortunately it proved difficult to correlate titanium nitride inclusions midh prior-austenite-grain-boundary pinning.
Approved for public release; distribution is unlimited.
Showing items related by title, author, creator and subject.
Microchemical analysis of non-metallic inclusions in C-MN steel shielded metal arc welds by analytical transmission electron microscopy Walters, Jon D. (Monterey, California. Naval Postgraduate School, 1998-06-01);Microchemical analyses of the inclusions present in several shielded metal-arc steel weld metals were made by analytical transmission electron microscopy (TEM). Low alloy C-Mn steel weld metal samples were studied in which ...
The effects of titanium on the mechanical properties of shielded metal arc welding (SMAW) of C-Mn steels. Greene, Michael K. (Monterey, California. Naval Postgraduate School, 1997-03);The strength and toughness of low alloy steel shielded metal arc weld (SMAW) metal is markedly improved by the presence of the microconstituent acicular ferrite. Since acicular ferrite is nucleated by the non-metallic ...
Van Slyke, Jonathon J. (Monterey, California. Naval Postgraduate School, 1999-12-01);The factors that affect strength and toughness often ultra-low carbon steel weld samples (HSLA-80 and HSLA-100), welded using the gas metal arc welding (GMAW) process and new ultra-low carbon consumable electrodes, were ...