Results 211 to 220 of about 26,946 (267)

Fatigue of a dual- phase steel

Metallurgical Transactions A, 1979
A study has been made of the fatigue of a V containing dual-phase steel, whose tensile strength is equivalent to that of SAE 980X high strength, low-alloy (HSLA) steels, as a function of prestrain. It is found that the cyclic stress-strain curve, strain-life response and notch sensitivity are little affected by pre-strains of up to 8 pct: This is in ...
A. M. Sherman, R. G. Davies
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Formability of Dual-Phase Steels

JOM, 1982
The mechanical behavior of dual-phase steels depends on a broad range of metallurgical phenomena. The initial hardening reflects the volume fraction of the martensitic phase via a back stress, but this also depends on the local strength of the martensite.
J. D. Embury, J. L. Duncan
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Strain Hardening Behavior of Dual-Phase Steels

Metallurgical and Materials Transactions A, 2009
A detailed qualitative and quantitative examination of the microstructure and mechanical properties of three different classes of DP600 and DP450 dual-phase (DP) steels was carried out. The tested DP steels are characterized by different alloying elements: aluminum, boron, and phosphorus.
COLLA, Valentina, Massimo De Sanctis, DIMATTEO, Antonella, Gianfranco Lovicu, Adriano Solina, Renzo Valentini   +5 more
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Hardenability of Austenite in a Dual-Phase Steel

Journal of Materials Engineering and Performance, 1999
A low-carbon, low-alloy steel was intercritically heat treated and thermomechanically processed to study the martensitic hardenability of austenite present. Rolling of the two-phase (α+γ) microstructure elongated austenite particles and reduced their martensitic hardenability because the α/γ interface where new ferrite forms during cooling was ...
M. Sarwar, R. Priestner
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The formability of dual-phase steels

Journal of Applied Metalworking, 1982
The formability of both heat-treated and as-hot-rolled dual-phase steels was evaluated in neck- and fracture-limited forming modes and compared with the formability of conventional high-strength low-alloy (HSLA) or microalloyed steels. For both production routes the formability of dual-phase steels was found to be sensitive to tensile strength ...
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The formability of a dual phase steel

Metallurgical Transactions A, 1981
The mechanical properties and the forming behavior of a dual phase sheet steel have been assessed. The effect of downgaging on forming properties was especially considered because of its importance in lighter weight, energy saving materials. A lower bound method has been used to determine the forming limit diagrams of the steel. Results have shown that
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Yield behaviour of dual-phase steel

Scripta Metallurgica, 1989
Analyse des courbes experimentales obtenues a partir d'essais de traction sur l'acier dual phase a 11 ...
B. Grushko, B-Z. Weiss
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Microanalysis of dual phase steels

Scripta Metallurgica, 1984
Comparaison des profils de concentration de Mn prevus par un modele d'equilibre local avec ceux trouves par analyse RX a dispersion d'energie (EDAX) et par microscopie electronique a transmission par balayage (STEM)
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Dual-Phase Steels

2013
Abstract Dual-phase (DP) steels have the widest usage in automotive industry because of their excellent combination of strength and ductility. This chapter provides an overview of the composition, microstructure, processing, deformation mechanism, mechanical properties, formability, and special attributes of DP steels.
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Plastic anisotropy of dual-phase steels

International Journal of Plasticity, 1990
Abstract A continuum mechanics model on yielding and plastic deformation of dual-phase steels consisting of a large number of spherical second-phase islands dispersed in a matrix has been developed. The model is based on the Hill's theory on orthogonal anisotropy and the mean internal stress arising from the differences in strengths and plastic ...
T. Sakaki, K. Ohnuma, K. Sugimoto, Y. Ohtakara   +3 more
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