Accession Number : AD1039748


Title :   Fundamental Studies on Phase Transformations and Mechanical Properties of Fusion Welds in Advanced Naval Steels


Descriptive Note : Technical Report,01 Jun 2012,31 May 2016


Corporate Author : Lehigh University, Department of Materials Science and Engineering Bethlehem United States


Personal Author(s) : DuPont, John N


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1039748.pdf


Report Date : 31 Jul 2017


Pagination or Media Count : 21


Abstract : NUCu-140 and 10 wt% Ni steel were developed as candidate materials for use in naval and structural applications. However, prior to this research project, a fundamental understanding of the phase transformation behavior under the high heating and cooling rates associated with welding thermal cycles was not available for these alloys. For NUCu-140, the potential use of multiple thermal cycles was investigated with HAZ simulations using a Gleeble thermo-mechanical simulator. For 10 wt% Ni steel, the effect of rapid heating and cooling rates associated with welding thermal cycles was established for the first time.


Descriptors :   phase transformations , mechanical properties , yield strength , heat treatment , welding , welds , low temperature , microhardness , toughness , arc welding , arc welds , critical temperature , steel , military applications , alloys


Subject Categories : Metallurgy and Metallography
      Physical Chemistry


Distribution Statement : APPROVED FOR PUBLIC RELEASE