Stress-Strain Behaviour Simulation of Vanadium Microalloyed Steel with the Internal Defects During two Different Heating Strategies

Kvíčala, Miroslav; Frydrýšek, Karel; Hendrych, Aleš

doi:10.1007/s10704-013-9819-2

Cited by 3 publications

(5 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Good performance of the 34CrMo4 steel at high pressures enables its application to gas cylinders. The steel is primarily produced as blanks -wire, universal mill plates, forgings, seamless tubes, hot-rolled billets, rolled bars, hot-rolled strips or steel for refining [1][2][3][4]. The heat-treatable steel could be in different thermal treated stages, as austenitized and quenched or austenitized, quenched and tempered.…”

Section: Introductionmentioning

confidence: 99%

Comparative strain analysis of 34CrMo4 steel and Inconel 738LC

Štamborská¹,

Losertová²,

Konečná³

et al. 2021

View full text Add to dashboard Cite

The comparative analysis of mechanical properties using a digital image correlation by Vic 2D software was performed for two types of high-strength materials. The strain analysis during tensile tests was carried out on the cylinder tensile specimens of 34CrMo4 steel and IN 738LC superalloy. Both materials showed similar strength but different ductility. While the 34CrMo4 steel showed typical necking of tensile specimens with ductile fracture surfaces, cracking of the IN 738LC became without necking, and the fracture morphology displayed mixed feature with ductile dimples or quasi-cleavage areas and cracked carbides. Microhardness measurements completed metallographic and fractographic studies of tensile samples.

show abstract

Section: Introductionmentioning

confidence: 99%

Comparative strain analysis of 34CrMo4 steel and Inconel 738LC

Štamborská¹,

Losertová²,

Konečná³

et al. 2021

View full text Add to dashboard Cite

show abstract

“…It is also used in hot-rolled billets, rolled bars, wire and universal mill plates, steel plates and hot-rolled strips, for free and drope stampings. Machine parts with high toughness in the automotive and aerospace industry, for example axis, pinion shafts, bandages [1][2][3][4][5]. Increasing content of molybdenum in the Cr-Mo steel type, increases not only the throughhardening, but it also prevents significant drop in hardness during tempering.…”

Section: Introductionmentioning

confidence: 99%

STRESS ANALYSIS IN CYLINDRICAL SPECIMENS MADE FROM 34CrMo4 USING DIC

Štamborská¹,

Losertová²,

Mareš³

et al. 2014

Acta Metall Slovaca

View full text Add to dashboard Cite

The stress analysis using digital image correlation was carried out on cylindrical tensile specimens made from low carbon 34CrMo4 steel. The results obtained by conventional tensile test were compared with the results obtained by digital image correlation. The true stresses were evaluated from the compiled true stress-strain diagrams and compared with the engineering stresses. The average values of the yield stress and tensile strength reached of 945±15 MPa and 1039±5 MPa, respectively. Thus, parameters obtained from tensile test were plotted in the engineering diagrams that represent often starting diagrams for engineering practice. Based on results of digital image correlation the possibility of construction of the true stress-strain diagrams is discussed with regard to more exact values of stress for use in practice. The evaluation and compilation of the true stress-strain diagrams were carried out by means of image correlation software Vic 2D.

show abstract

“…The only relevant difference among these steel grades is vanadium content. Based on the manufacturing experience it was discovered that 24CrMo4 and 34CrMo4 steels are significantly more sensitive to the cracks that occurred after continuous casting and/or heating in the soaking pit [1][2][3][4][5]. Critical points of the manufacturing process were already identified.…”

Section: Introductionmentioning

confidence: 99%

“…In terms of the VC, VN and V(C,N) precipitation mechanism it is possible to state that the precipitation occurs in the stable austenite through heterogeneous nucleation of the VC, VN and V(C,N) on the dislocations, austenite grain boundaries and the MnS particles [2,3]. In many cases it can arise even complex multiphase inclusions, it is possible to observe multiphase inclusions such as MnS, (Ti,V) (C,N) and AlN [14].…”

Section: Introductionmentioning

confidence: 99%

“…The negative effect of precipitation of carbides, nitrides and carbonitrides of vanadium is realized during the continuous casting, if the proper casting conditions are not guaranteed. Continuously cast blooms straightening within the critical temperature range (1073 -1273 K) on the radial casting machines creates unfavourable stress-strain conditions that contributes to the initiation and propagation of the internal cracks [1][2][3]. Typical internal defect present in 34CrMo4 steel after hot-rolling is shown on Fig.1.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Simulation of the Carbides Precipitation Mechanism in 34CrMo4 and 42CrMo4 Steels

Kvíčala

Štamborská²

2014

IJMSA

View full text Add to dashboard Cite

The low-alloyed Cr-Mo steels (25CrMo4, 34CrMo4 and 42CrMo4) are used for production of important technical equipment parts in the petrochemical industry, for transportation of the gaseous hydrocarbons, concentrated acids, and lyes. They are also used for rolling of seamless tubes, in the production of pressure bottles, steel bolts, etc. Steel grades 25CrMo4 and 34CrMo4 represents materials with improved mechanical properties, mainly due to vanadium microalloying. Unfortunately, vanadium microalloyed steels are very sensitive to cracks occurrence after continuous casting and/or heating before hot rolling. This paper deals with vanadium rich precipitates MC, M 3 C 2 and M 7 C 3 formation during continuous casting process. It was verified that vanadium microalloyed steel 34CrMo4 exhibited different carbides formation mechanism and contained significantly higher rate of vanadium in M x C y carbides than steel grade 42CrMo4 using experimental data and ThermoCalc software. Understanding of the vanadium precipitation kinetics is necessary for manufacturing process optimization and internal defects limitation.

show abstract

Stress-Strain Behaviour Simulation of Vanadium Microalloyed Steel with the Internal Defects During two Different Heating Strategies

Cited by 3 publications

References 5 publications

Comparative strain analysis of 34CrMo4 steel and Inconel 738LC

Comparative strain analysis of 34CrMo4 steel and Inconel 738LC

STRESS ANALYSIS IN CYLINDRICAL SPECIMENS MADE FROM 34CrMo4 USING DIC

Simulation of the Carbides Precipitation Mechanism in 34CrMo4 and 42CrMo4 Steels

Contact Info

Product

Resources

About