The effect of welding process on the microstructure of HY-130 steel weldments
McNutt, Teresa M.
Losz, J. Mauro B.
MetadataShow full item record
HY-130 is a high-strength, low-carbon steel used in the quenched and tempered condition . It is designed for high performance and marine applications where good weldability is a requirement. Optimum welding parameters are currently under investigation. In this study, 1/2 inch (12.7 mm) HY-130 steel weldments produced by submerged arc welding (SAW) and gas metal arc welding (GMAW) processes are compared by means of a systematic microstructural characterization of the base metal, weld metal, and heat affected zone (HAZ). The microstructures are characterized by optical and electron microscopy and microhardness measurements are performed in the weld metal and across the HAZ to relate the microstructure with the microhardness profiles. The weld metal microstructure of both weldments showed a predominantly martensitic structure. The GMAW weld metal had a finer lath martensite structure and contained more retained austenite and twinned martensite. The SAW weld metal had a less defined lath structure which was more bainitic. The microhardness values were higher in the GMAW weld metal. No significant differences in microstructure and hardness were observed in the HAZ of the two weldments.
RightsCopyright is reserved by the copyright owner
Showing items related by title, author, creator and subject.
Friction stir welding of HT9 ferritic-martensitic steel: an assessment of microstructure and properties Ray, Lara L. (Monterey, California: Naval Postgraduate School, 2013-06);This thesis explores the processing-microstructure-property relationships in friction stir welded (FSW) HT9A ferritic-martensitic steel. HT9 has previously been studied as a structural component for fusion/fission based ...
Zhilyaev, A.P.; Swaminathan, S.; Gimazov, A.A.; McNelley, T.R.; Langdon, T.G. (Springer, 2008);The microstructure and microhardness of copper subjected to large strains either using one or a combination of severe plastic deformation (SPD) processing techniques was evaluated. The individual SPD techniques used ...
Burna, Richard F. (Monterey, California. Naval Postgraduate School, 1983-09);Shielded metal arc weldments of Armco Steel Corporation's NICOP class 3, 19mm (3/4 inch) plate, conforming to ASTM A710 grade A, were studied to provide information concerning the microstructure in the heat affected ...