Results 171 to 180 of about 800,679 (212)

Pearlite morphology in the hypereutectoid steels

Scripta Materialia, 1997
Abstract The variation of pearlite morphology with carbon content in hypereutectoid steels was examined analytically. It was shown that the cementite thickness decreases with increasing carbon content if (S/S°) (C°/C). In addition, the significance of these conditions on improving the drawability of the hypereutectoid steels was discussed.
Kyung-Tae Park, Sam-Kyu Cho, Jong-Kyo Choi   +2 more
openaire   +1 more source

Partially amorphous nanocomposite obtained from heavily deformed pearlitic steel

Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, 2009
Cold-drawn pearlitic steel wires are known to exhibit increasing strength with increasing elongation and are therefore highly interesting for a wide field of engineering applications.
Christine Borchers, Talaat Al-Kassab, Shoji Gotō   +2 more
exaly   +2 more sources

Electron backscatter diffraction on pearlite structures in steel

Journal of Microscopy, 2006
SummaryElectron backscatter diffraction measurements were performed on a set of pearlitic steel samples after different heat treatments. The strengths and limitations of the technique with respect to the pearlite issue are presented. Interpretation of the obtained results confirmed that more than one pearlite colony may exist inside one ferrite nodule ...
A, Walentek, M, Seefeldt, B, Verlinden, E, Aernoudt, P, Van Houtte   +4 more
openaire   +2 more sources

Modelling of reaustenitization from the pearlite structure in steel

Acta Materialia, 1998
Abstract A two-dimensional model has been developed for the description of the formation of austenite from lamellar pearlite in steel. The diffusion equation is solved in a small domain representative of a regular structure of lamellar pearlite. The solution is obtained using a finite element method with a deforming mesh and a remeshing procedure ...
Jacot, A., Reed, R. C., Rappaz, M.
openaire   +1 more source

Thermomechanical treatments of a 1050 pearlite steel

Metallurgical Transactions A, 1983
A study of the microstructures and mechanical properties of thermomechanically treated 1050 steel has been carried out. The materials were first transformed to fine and coarse lamellar pearlite structures. These samples were reduced 75 pct in thickness by cold rolling, then heat treated at 780 °C (up-quenching) or 650 °C (annealing) for different ...
L. J. Chen, T. W. Wu, H. C. Cheng
openaire   +1 more source

Mechanism of the Formation of Pearlite in Steels

Nature, 1949
FOR the sake of simplicity, we shall consider the case of an eutectoid steel ; if the steel is cooled slowly from the austenitic region, a well-known pearlite structure is formed in crossing the A1 line, that is, 726°, and remains as such down to room temperature. During heating, just the reverse change will take place.
openaire   +1 more source

Divergent pearlite in a manganese eutectoid steel

Acta Metallurgica, 1963
Abstract An unusual structural feature, diverging lamellae, has provided new insight to the influence of composition on transformations in steel. Samples from a high-purity ternary alloy of iron containing 5.2 per cent manganese and 0.6 per cent carbon were austenitized, isothermally transformed within the temperature range 500°–675°C, and quenched ...
John W Cahn, W.G Hagel
openaire   +1 more source

Electropulsing of pearlitic steels

2016
Electropulsing is a process characterised by the application of short duration (~100μs) electrical current pulses. The process is claimed to be capable of stimulating microstructure change in a variety of metals at low temperatures and energy levels. In this thesis, electropulsing is applied to examine its potential to produce nanostructured, strong ...
openaire   +2 more sources

Properties of pearlite-free steel with niobium

Metal Science and Heat Treatment, 1975
1. Pearlite-free steel alloyed with niobium has good resistance to brittle fracture — the ductile-brittle transition temperature determined from the work of crack propagationap=2 kg-m/cm2 is −100°. 2. The optimal niobium concentration is about 0.1%.
L. V. Popova, V. N. Zikeev, M. N. Georgiev   +2 more
openaire   +1 more source

Strengthening in low carbon pearlitic steels

Materials Science and Engineering, 1986
Abstract The microstructure-flow stress relationship has been examined in two simple ferrite-pearlite steels. As in fully pearlite steels, a Hall-Petch equation was shown to be applicable, when care is taken in obtaining the appropriate mean slip distance in ferrite for each microstructure.
B.E. O'Donnelly, T.N. Baker
openaire   +1 more source