Actions for Microstructural Developments Leading to New Advanced High Strength Sheet Steels [electronic resource] : A Historical Assessment of Critical Metallographic Observations

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Microstructural Developments Leading to New Advanced High Strength Sheet Steels [electronic resource] : A Historical Assessment of Critical Metallographic Observations

Published
Washington, D.C. : United States. Office of the Assistant Secretary of Energy Efficiency and Renewable Energy, 2015.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
Physical Description
5 : digital, PDF file
Additional Creators
United States. Office of the Assistant Secretary of Energy Efficiency and Renewable Energy and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
In the past 30+ years significant advancements have been made in the development of higher strength sheet steels with improved combinations of strength and ductility that have enabled important product improvements leading to safer, lighter weight, and more fuel efficient automobiles and in other applications. Properties of the primarily low carbon, low alloy steels are derived through careful control of time-temperature processing histories designed to produce multiphase ferritic based microstructures that include martensite and other constituents including retained austenite. The basis for these developments stems from the early work on dual-phase steels which was the subject of much interest. In response to industry needs, dual-phase steels have evolved as a unique class of advanced high strength sheet steels (AHSS) in which the thermal and mechanical processing histories have been specifically designed to produce constituent combinations for the purpose of simultaneously controlling strength and deformation behavior, i.e. stress-strain curve shapes. Improvements continue as enhanced dual-phase steels have recently been produced with finer microstructures, higher strengths, and better overall formability. Today, dual phase steels are the primary AHSS products used in vehicle manufacture, and several companies have indicated that the steels will remain as important design materials well into the future. In this presentation, fundamental results from the early work on dual-phase steels will be reviewed and assessed in light of recent steel developments. Specific contributions from industry/university cooperative research leading to product improvements will be highlighted. The historical perspective provided in the evolution of dual-phase steels represents a case-study that provides important framework and lessons to be incorporated in next generation AHSS products.
Report Numbers
E 1.99:doe-usamp-05976-4
doe-usamp-05976-4
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Note
Published through SciTech Connect.
08/03/2015.
"doe-usamp-05976-4"
Microscopy and Microanalysis 21 S3 ISSN 1431--9276
Microscopy and Microanalysis 2015 conference Portland, Oregon August 2-6, 2015.
David K Matlock; Larrin S Thomas; Mark D Taylor; Emmanuel De Moor; John G Speer.
United States Automotive Materials Partnership LLC (USAMP LLC)
Funding Information
EE0005976
View MARC record | catkey: 24093527