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The influence of temperatures and strain rates on the mechanical behavior of dual phase steel in different conditions

Yu Cao (Institutionen för material- och tillverkningsteknik, Yt- och mikrostrukturteknik) ; Johan Ahlström (Institutionen för material- och tillverkningsteknik, Materialteknologi) ; Birger Karlsson (Institutionen för material- och tillverkningsteknik, Materialteknologi)
Journal of Materials Research and Technology (2238-7854). Vol. 4 (2015), 1, p. 68-74.
[Artikel, refereegranskad vetenskaplig]

This study deals with the mechanical behavior of DP steel. A commercial dual phase steel (DP 800) was strained to 3.5% followed by annealing at 180 degrees C for 30 min to simulate the pressing of the plates and the paint bake cycle involved in the manufacturing process of automobile body structures. The effect of temperarure and strain rate on the machanical behavior of this material was investigated by uniaxial tensile tests, covering applicable temperatures (-60 degree C to +100 degree C) and strain rates (1x10exp-4 s-1 to 1x10exp+2 s-1) experienced in automotive crash situations. Yield and ultimate tensile strength, ductility, temperature effects and strain rate sensitivity as well as strain rate hardening rate have been determined and discussed.

Nyckelord: Dual phase steel, Tensile properties, Ductility, Strain rate sensitivity, Strain hardening



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Denna post skapades 2015-06-21. Senast ändrad 2016-02-01.
CPL Pubid: 218609

 

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