Results 151 to 160 of about 238,208 (203)

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 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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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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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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On initial yielding in dual-phase steel

Scripta Metallurgica, 1984
La presence de contraintes residuelles devrait diminuer la limite d'elasticite mais, en fait, ce dont temoignent les resultats experimentaux, elle l'accroit, et ce, on ne peut mieux, quand la fraction de martensite ...
R. Priestner, C.L. Aw
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Dual Phase Steel Production Bumpers

SAE Technical Paper Series, 1979
<div class="htmlview paragraph">The use of HSLA dual phase steel is an effective method of reducing bumper weight while meeting ever increasing government performance requirements. A paper analysis, followed by a hardware evaluation, successfully substituted “dual phase” for conventional HSLA steel at a reduced thickness.
Harvey H. L. Mantey, Fred T. Burton
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Dual-Phase Steels

1990
Abstract Dual-phase steels are a new class of high-strength low alloy (HSLA) steels characterized by a microstructure consisting of about 20% hard martensite particles dispersed in a soft ductile ferrite matrix. In addition to high tensile strength, in the range of 550 MPa (80 ksi), dual-phase steels exhibit continuous yielding behavior,
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MACHINING CHARACTERISTICS OF DUAL-PHASE STEEL

Materials and Manufacturing Processes, 1990
ABSTRACT A dual-phase steel was produced from a hot-rolled HSLA steel ASTM-A58S by quenching from an intercritical temperature which produced a structure consisting of 80 vol.% martensite plus 20vol.%ferrite. The as-received hot-rolled structure consisted primarily of 60 vol.% ferrite plus 40 vol.% pearlite.
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