Hardening Behavior Characterization of Dual Phase Steels

Kemal DAVUT; Caner SİMSİR; Baris CETİN

doi:https://doi.org/10.17350/HJSE19030000107

Makale detayları

Hardening Behavior Characterization of Dual Phase Steels

Yazarlar:

Kemal DAVUT | Caner SİMSİR | Baris CETİN

Yayıncı:

Hitit University

Dergi:

Hittite Journal of Science and Engineering 2018 Vol.5 Issue 4, pp.301-306

Belge Tipi:

Makale

Yayın Tarihi:

12/2018

Belge Dili:

İngilizce

Document ID (Org No.):

2000451645

Sıklık:

Üç Aylık

eISSN:

2148-4171

DOI:

https://doi.org/10.17350/HJSE19030000107

Özet:

 

The requirements for higher passenger safety, improved fuel economy and weight reduction  in automobile industry necessitates the usage of advanced high strength steel  AHSS   grades. Dual phase  DP  steels are the most widely used one among AHSS. DP steels become  increasingly popular, since they provide a combination of sufficient formability at room temperature and tensile strength over 1000 MPa. The current standards for DP steels only specifies yield and tensile strength. Steels from various producers have considerably different composition and microstructure; however they still have the same grade name. Combined with  the inherited heterogeneous microstructure, those steels exhibit different strain hardening  behavior. The aim of this study is to evaluate the strain hardening behavior of DP800 steels,  obtained from different vendors and thus having different compositions and microstructures.  The strain hardening behavior was characterized with tensile tests performed along rolling and transverse directions. The microstructure has been characterized with optical and  scanning electron microscopes. The martensite fraction, grain size of ferrite and chemical  composition has been correlated to the strain hardening behavior. The results show that  the steel with more micro-alloying addition has finer ferritic grain size, which cause higher  initial strain hardening rate. The steel with higher Mn and Cr has higher martensite fraction,  which cause strain hardening rate to be higher at higher strain levels.

Makale detayları

Hardening Behavior Characterization of Dual Phase Steels

Yazarlar: Kemal DAVUT | Caner SİMSİR | Baris CETİN

Yayıncı: Hitit University

Dergi: Hittite Journal of Science and Engineering 2018 Vol.5 Issue 4, pp.301-306

Belge Tipi: Makale

Yayın Tarihi: 12/2018

Belge Dili: İngilizce

Document ID (Org No.): 2000451645

Sıklık: Üç Aylık

eISSN: 2148-4171

DOI: https://doi.org/10.17350/HJSE19030000107

Sayı

Yazarlar:

Kemal DAVUT | Caner SİMSİR | Baris CETİN

Yayıncı:

Hitit University

Dergi:

Hittite Journal of Science and Engineering 2018 Vol.5 Issue 4, pp.301-306

Belge Tipi:

Makale

Yayın Tarihi:

12/2018

Belge Dili:

İngilizce

Document ID (Org No.):

2000451645

Sıklık:

Üç Aylık

eISSN:

2148-4171

DOI:

https://doi.org/10.17350/HJSE19030000107