Cementite dissolution in heavily cold drawn pearlitic steel wires

The relationship between microstructures and ductility parameters, including reduction of area, elongation to failure, occurrence of delamination, and number of turns to failure in torsion, in hypereutectoid pearlitic steel wires was investigated. The transformed steel wires at 620 °C were successively dry-drawn to drawing strains from 0.40 to 2.38. To examine the effects of hot-dip galvanizing conditions, post-deformation annealing was performed on cold drawn steel wires (ε = 0.99, 1.59, and 2.38) with a different heating time of 30–3600 s at 500 °C in a salt bath. In cold drawn wires, elongation to failure dropped due to the formation of dislocation substructures, decreased slowly due to the increase of dislocation density, and saturated with drawing strain. During annealing, elongation to failure increased due to recovery, and saturated with annealing time. The variation of elongation to failure in cold drawn and annealed steel wires would depend on the distribution of dislocations in lamellar ferrite. The orientation of lamellar cementite and the shape of cementite particles would become an effective factor controlling number of turns to failure in torsion of cold drawn and annealed steel wires. The orientation and shape of lamellar cementite would become microstructural features controlling reduction of area of cold drawn and annealed steel wires. The density of dislocations contributed to reduction of area to some extent.

Download Full-text

Atomic scale investigation of redistribution of alloying elements in pearlitic steel wires upon cold-drawing and annealing

Ultramicroscopy ◽

10.1016/j.ultramic.2012.10.010 ◽

2013 ◽

Vol 132 ◽

pp. 233-238 ◽

Cited By ~ 22

Author(s):

Y.J. Li ◽

P. Choi ◽

S. Goto ◽

C. Borchers ◽

D. Raabe ◽

...

Keyword(s):

Cold Drawing ◽

Pearlitic Steel ◽

Atomic Scale ◽

Alloying Elements ◽

Steel Wires

Download Full-text

Evolution of carbon distribution and mechanical properties during the static strain ageing of heavily drawn pearlitic steel wires

Materials Science and Engineering A ◽

10.1016/j.msea.2016.04.091 ◽

2016 ◽

Vol 667 ◽

pp. 115-124 ◽

Cited By ~ 7

Author(s):

A. Lamontagne ◽

V. Massardier ◽

X. Sauvage ◽

X. Kléber ◽

D. Mari

Keyword(s):

Mechanical Properties ◽

Pearlitic Steel ◽

Carbon Distribution ◽

Strain Ageing ◽

Static Strain ◽

Steel Wires

Download Full-text

Interactions of stress corrosion cracks in cold drawn pearlitic steel wires: An X-ray micro-computed tomography study

Corrosion Science ◽

10.1016/j.corsci.2018.09.009 ◽

2018 ◽

Vol 145 ◽

pp. 170-179 ◽

Cited By ~ 10

Author(s):

Hamed Lamei Ramandi ◽

Honghao Chen ◽

Alan Crosky ◽

Serkan Saydam

Keyword(s):

Computed Tomography ◽

Stress Corrosion ◽

Pearlitic Steel ◽

Micro Computed Tomography ◽

X Ray ◽

Steel Wires

Download Full-text

Micro- and Macro-Approach to the Fatigue Crack Propagation in High-Strength Pearlitic Steel Wires

Advances in Fracture and Damage Mechanics VI - Key Engineering Materials ◽

10.4028/0-87849-448-0.681 ◽

2007 ◽

pp. 681-684

Author(s):

J. Toribio ◽

B. Gonzáles ◽

J.C. Matos ◽

F.J. Ayaso

Keyword(s):

Fatigue Crack ◽

Crack Propagation ◽

Fatigue Crack Propagation ◽

High Strength ◽

Pearlitic Steel ◽

Steel Wires

Download Full-text

Analysis of the Bauschinger Effect in Cold Drawn Pearlitic Steels

Metals ◽

10.3390/met10010114 ◽

2020 ◽

Vol 10 (1) ◽

pp. 114

Author(s):

Jesús Toribio ◽

Viktor Kharin ◽

Francisco-Javier Ayaso ◽

Miguel Lorenzo ◽

Beatriz González ◽

...

Keyword(s):

Mechanical Behaviour ◽

Bauschinger Effect ◽

High Strength ◽

Pearlitic Steel ◽

Internal Stresses ◽

Compression Load ◽

Prestressing Steel ◽

Hardening Rule ◽

Steel Wires ◽

Cyclic Tension

Prestressing steel wires usually undergo cyclic loading in service. Therefore, it is of interest to analyse certain features of their mechanical behaviour under this type of loading, such as the Bauschinger effect (BE) or the hardening rule, that fit the real mechanical behaviour appropriately. In this study, different samples of high strength pearlitic steel wires were subjected to cyclic tension-compression load exceeding the material yield strength, thus generating plastic strains. From the experimental results, various parameters were obtained revealing that analysed steels exhibited the so-called Masing type BE. In addition, the variation of the BE characteristics (of the effective and internal stresses) with the applied plastic pre-strain indicated that the studied materials followed a mixed strain hardening rule with the domination of the kinematic component.

Download Full-text