scholarly journals Computational and Numerical Analysis of Ductile Damage Evolution under Load-Unload Tensile Test in Dual Phase Steel

2018 ◽  
Keyword(s):  
Numerical Analysis ◽  
Tensile Test ◽  
Damage Evolution ◽  
Dual Phase Steel ◽  
Ductile Damage ◽  
Dual Phase

Development of the 600MPa High Aluminum Galvanized Dual Phase Steel and its Application

2011 ◽  
Vol 228-229 ◽  
pp. 1169-1173
Author(s):  
Hui Wang ◽  
Cheng Jiang Lin ◽  
Zhao Jun Deng ◽  
Peng Yang ◽  
Fei Yan ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Test ◽  
Grain Boundaries ◽  
Retained Austenite ◽  
Dual Phase Steel ◽  
Dual Phase ◽  
Bake Hardening ◽  
Tem Analysis ◽  
Auto Parts ◽  
High Aluminum

An original 600MPa high aluminum galvanized dual phase steel had been successfully developed in this paper. The microstructure analysis showed that the microstructures of the steel mainly consist of ferrite and 8%~11% martensite as well as 4%~6% retained austenite which distributed around the ferrite grain boundaries. TEM analysis demonstrated that there exists lots of high density dislocation in ferrite, obvious twin-structures in martensite and some retained austenite in the microstructures. The existence of the retained austenite makes some contribution to the higher elongation of the steel. The tensile test showed that the steel delivers an excellent mechanical properties of Rp0.2=350~400MPa,Rm=610~650MPa, A80mm=26%~30%, n=0.17~0.21 and an excellent bake-hardening value of 50~70MPa. Ball-Punch Experiments showed that the galvanizing dual phase steel had a good and satisfying coating adhesion. Owe to the excellent formability, the steel has successfully been used in the production of some auto parts.

scholarly journals Influence of Microstructure on Ductile Damage Behavior of Dual Phase Steel

2011 ◽  
Vol 97 (3) ◽  
pp. 136-142 ◽  
Author(s):  
Takahiro Ishiguro ◽  
Yoshinori Yoshida ◽  
Nobuki Yukawa ◽  
Takashi Ishikawa ◽  
Hiroshi Yoshida ◽  
...  
Keyword(s):  
Dual Phase Steel ◽  
Ductile Damage ◽  
Dual Phase ◽  
Damage Behavior

Experimental and Numerical Analysis on Dual Phase Steel (DP780) Sheet Forming Limit and Effect of Microstructure Evolution on Formability

2020 ◽  
Vol 29 (12) ◽  
pp. 8247-8260
Author(s):  
Bhargava Marrapu ◽  
Vivek Kumar Barnwal ◽  
Shanta Chakrabarty ◽  
Asim Tewari ◽  
Sushil K. Mishra
Keyword(s):  
Numerical Analysis ◽  
Microstructure Evolution ◽  
Dual Phase Steel ◽  
Sheet Forming ◽  
Forming Limit ◽  
Dual Phase ◽  
Effect Of Microstructure

scholarly journals Damage Evolution in Nakajima Tests of DP800 Dual Phase Steel

2018 ◽  
Vol 418 ◽  
pp. 012048
Author(s):  
T Bergs ◽  
M Nick ◽  
D Trauth ◽  
F Klocke
Keyword(s):  
Damage Evolution ◽  
Dual Phase Steel ◽  
Dual Phase

Investigation on Elastic Behaviour of DP800 Dual Phase Steel

2015 ◽  
Vol 1134 ◽  
pp. 109-115
Author(s):  
Noraishah Mohamad Noor ◽  
Haryanti Samekto ◽  
Ahmad Razlan Yusoff ◽  
Rasool Mohideen ◽  
Nazrul Idzham Kasim ◽  
...  
Keyword(s):  
Tensile Test ◽  
Power Law ◽  
Dual Phase Steel ◽  
Piecewise Linear ◽  
True Strain ◽  
True Stress ◽  
Uniaxial Tensile ◽  
Uniaxial Tensile Test ◽  
Dual Phase ◽  
Plasticity Model

The elastic relaxation behavior of dual phase steel DP800 is studied in this investigation, based on experimental and numerical methods the true stress-true strain curve obtained from a standard uniaxial tensile test differs according to angular rolling direction The relationship between true stress and true strain are presented in the form of power law equation. This form of material constitutive model shows that the strength coefficient and strain hardening exponent vary significantly in describing the nonlinear true stress-true strain relationship of the material. Finite Element (FE) calculations with Belytschko-Lin-Tsay shell element formulation are performed using the non-linear FE code Ls-Dyna to predict the plastic deformation of the material. Power Law Isotropic Plasticity criterion is adopted for these numerical analyses. The local strains in plastic deformations zone and true stress-strains characteristics obtained by experiment are compared. Using the same parameter the simulation was applied in different modes which are known as Isotropic Elastic-Plastic Model and Piecewise Linear Isotropic Plasticity Model providd in Ls-Dyna simulation for comparison. In general, good agreement in results is obtained between Power Law Isotropic Plasticity Model is obtained compared to Isotropic Elastic-Plastic Model and Piecewise Linear Isotropic Plasticity Model. It is demonstratedthat the behavior of the strain and the Power law criterion can be determined from uniaxial tensile test with the aid of non-linear FE analyses.

3D Micromechanical Modeling of Failure and Damage Evolution in Dual Phase Steel Based on a Real 2D Microstructure

2016 ◽  
Vol 29 (1) ◽  
pp. 95-110 ◽  
Author(s):  
M.R. Ayatollahi ◽  
A.Ch. Darabi ◽  
H.R. Chamani ◽  
J. Kadkhodapour
Keyword(s):  
Damage Evolution ◽  
Dual Phase Steel ◽  
Micromechanical Modeling ◽  
Dual Phase

Microstructure failure in ferrite-martensite dual phase steel under in-situ tensile test

2017 ◽  
Vol 24 (3) ◽  
pp. 350-356 ◽  
Author(s):  
Rui-bin Gou ◽  
Wen-jiao Dan ◽  
Wei-gang Zhang ◽  
Min Yu ◽  
Chun-yu Zhang ◽  
...  
Keyword(s):  
Tensile Test ◽  
Dual Phase Steel ◽  
Dual Phase
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