Influence of strain rate on tensile properties and fracture behaviour of DP600 and DP780 dual-phase steels

2016 ◽  
Vol 44 (10) ◽  
pp. 773-781 ◽  
Author(s):  
O. Çavuşoğlu ◽  
A. Güral ◽  
H. Gürün
Keyword(s):  
Strain Rate ◽  
Tensile Properties ◽  
Fracture Behaviour ◽  
Dual Phase ◽  
Dual Phase Steels

Investigation and Mean-Field Modelling of Microstructural Mechanisms Driving the Tensile Properties of Dual-Phase Steels

2020 ◽  
Author(s):  
Alexandre Mathevon ◽  
Damien Fabrègue ◽  
Véronique Massardier ◽  
Sophie Cazottes ◽  
Philippe Rocabois ◽  
...  
Keyword(s):  
Tensile Properties ◽  
Mean Field ◽  
Dual Phase ◽  
Dual Phase Steels ◽  
Field Modelling

Change in Tensile Properties of Dual-Phase Steels by Cu Addition

2017 ◽  
Vol 71 (2) ◽  
pp. 513-519 ◽  
Author(s):  
Junaidi Syarif ◽  
Nofriady Handra ◽  
Zainuddin Sajuri ◽  
Mohd Zaidi Omar
Keyword(s):  
Tensile Properties ◽  
Dual Phase ◽  
Dual Phase Steels

scholarly journals Effect of Martensite Fraction on Tensile Properties of Dual-Phase Steels

2012 ◽  
Vol 98 ◽  
pp. 320-327 ◽  
Author(s):  
Kohei Hasegawa ◽  
Yuki Toji ◽  
Hidekazu Minami ◽  
Hiroshi Ikeda ◽  
Tatsuya Morikawa ◽  
...  
Keyword(s):  
Tensile Properties ◽  
Dual Phase ◽  
Dual Phase Steels ◽  
Martensite Fraction

Analysis of Failure in Dual Phase Steel Sheets Subject to Electrohydraulic Forming

2014 ◽  
Vol 136 (5) ◽  
Author(s):  
Javad Samei ◽  
Daniel E. Green ◽  
Sergey Golovashchenko
Keyword(s):  
High Strain Rate ◽  
Strain Rate ◽  
Dual Phase Steel ◽  
High Strain ◽  
Dual Phase ◽  
Dual Phase Steels ◽  
Electrohydraulic Forming ◽  
Steel Sheets ◽  
Conical Die ◽  
The Impact

In previous work, the formability of dual phase steel sheets formed under quasi-static and high strain rate conditions was investigated in macroscale (Golovashchenko et al., 2013, “Formability of Dual Phase Steels in Electrohydraulic Forming,” J. Mater. Process. Technol., 213, pp. 1191–1212) and microscale (Samei et al., 2013, “Quantitative Microstructural Analysis of Formability Enhancement in Dual Phase Steels Subject to Electrohydraulic Forming,” J. Mater. Eng. Perform., 22(7), pp. 2080–2088). The Nakazima test and electrohydraulic forming (EHF) were used for quasi-static and high strain rate forming, respectively. It was shown that dual phase steel sheets exhibit hyperplastic behavior when subject to EHF into a conical die and the micromechanisms of formability improvement were discussed (Samei et al., 2014, “Metallurgical Investigations on Hyperplasticity in Dual Phase Steel Sheets,” ASME J. Manuf. Sci. Eng. (in press)). In this paper, mechanisms of failure in dual phase steels formed under quasi-static and EHF conditions are discussed. For this purpose, the nucleation, growth, and volume fraction of voids were studied. Also, fractography was carried out to understand the different types of fractures in the three grades of dual phase steels. The main objective of this work was to determine how failure was suppressed in the EHF specimens formed in the conical die compared to the Nakazima specimens. The impact of the sheet against the die was found to be the major reason for the delay in failure in the EHF specimens.

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