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The effect of microstructure on the decrease of the apparent Young's Modulus in DP 780 steel

conference contribution
posted on 2013-01-01, 00:00 authored by Matthias WeissMatthias Weiss, Minghui Cai, Peter HodgsonPeter Hodgson, A Kupke
Currently, there is a significant effort into developing novel multiphase microstructures to further improve the strength/ductility combination of advanced high-strength steels. To achieve this, the effect of the microstructure on sheet formability needs to be further understood. In this study, the effect of the microstructure on the variation of the elastic modulus in loading and unloading of DP 780 steel has been investigated. Five microstructures with varying volume fractions of ferrite and martensite were generated using different heat treatment cycles. Tension tests were performed to different strain values and the Young’s Modulus during loading and unloading was determined. The test results show that the reduction in unloading modulus with prestrain depends on the volume fraction and hardness of the martensitic phase.

History

Event

New Developments in Advanced High Strength Sheet Steels. International Symposium ( 2013 : Vail, Colorado)

Pagination

6 - 7

Publisher

AIST

Location

Vail, Colorado

Place of publication

[Vail, Colo.]

Start date

2013-06-23

End date

2013-06-27

Language

eng

Publication classification

E3 Extract of paper

Copyright notice

2013, AIST

Title of proceedings

Proceedings of the 2013 International Symposium on New Developments in Advanced High Strength Sheet Steels

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