Research And Development Of 780mpa Grade Low-Density Steels
2ND INTERNATIONAL CONFERENCE ON FRONTIERS OF MATERIALS SYNTHESIS AND PROCESSING(2019)
Abstract
In order to meet the weight reduction of automotive body, low density steels containing about 4wt.% of Al have been newly developed. The microstructure of low-density steel, comprising a mixture of blocky retained austenite, bainite, delta-ferrite and alpha-ferrite, was produced using a laboratory annealing simulator. The low-density steel exhibits good combination of strength and ductility, whose properties shows tensile strength of 810MPa with elongation of 27.4%. Its extraordinary properties are obtained from d-ferrite and austenite deformation induced martensite.
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Key words
780mpa grade,steels,low-density
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