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Temperature-Dependent Material Property Databases for Marine Steels - Part 3: HSLA-80
[Technical Report, Technical Report]
Naval Surface Warfare Center, Carderock DivisionOHIO STATE UNIV COLUMBUS
Pagination or Media Count:
The Lightweight Innovations for Tomorrow LIFT project entitled, Robust Distortion Control Methods and Implementation for Construction of Lightweight Metallic Structures, sought to address distortion issues with thin-plate steel fabrication of U.S. Navy ships. Integrated Computational Materials Engineering ICME-based tools and techniques were identified as the best path forward for distortion mitigation through computational simulation of the welding process. ICME tools require temperature-dependent material properties to achieve accurate computational results for distortion and residual stress. Properties of note include specific heat, thermal conductivity, coefficient of thermal expansion, elastic modulus, yield strength, and flow stress, from room temperature up to nearly the alloys melting point. In addition, the temperatures associated with on-heating and on-cooling phase transformations and their variation with heating rate, cooling rate, and peak temperature are also important for the prediction of stress and distortion evolution. The integrated project team IPT made generating pedigreed, temperature-dependent material property databases of Navy-relevant steels a key task within the LIFT project. The testing plan included some of the most common marine steels used in the construction of U.S. Naval vessels namely DH36, HSLA-65, HSLA-80, HSLA-100, HY-80, and HY-100. Material testing for each of the six steel grades was performed jointly by the Welding Engineering Program within the Department of Materials Science and Engineering at the Ohio State University OSU and the Welding, Processing, and Nondestructive Evaluation Branch at the Naval Surface Warfare Center, Carderock Division NSWCCD. The temperature-dependent material property data was then sent to ESI for adaptation for use in their welding-based, finite-element analysis FEA software colloquially known as SYSWELD. This report is part of a seven-part series detailing the pedigreed steel data.
[A, Approved For Public Release]