Microstructural characterization during the hot deformation of 1.17C–11.3Cr–1.48V–2.24W–1.35Mo ledeburitic tool steel

Pirtovšek, T. Večko; Kugler, G.; Godec, Matjaž; Terčelj, Milan

doi:10.1016/j.matchar.2010.11.016

Cited by 25 publications

(18 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to increase the economy of tool-steels production, both the improvement of their intrinsic hot deformability and the extension of temperature range of safe hot working are required. An improvement of the intrinsic hot workability of tool steels is related to the characteristics of carbides [1][2][3][4] that on the other hand have a large influence on the mechanical properties of tool steels that are used for the manufacture of various tools and dies usually subjected to high mechanical, temperature, chemical and tribological loads. [5][6][7] Referring to the scientific literature, it is known that initial deformations at upper temperature limit, as well as final deformations at lower temperature limit of hot working range, are characterized by considerably decreased hot deformability in comparison to temperatures within the mentioned range.…”

Section: Introductionmentioning

confidence: 99%

“…[5][6][7] Referring to the scientific literature, it is known that initial deformations at upper temperature limit, as well as final deformations at lower temperature limit of hot working range, are characterized by considerably decreased hot deformability in comparison to temperatures within the mentioned range. [1][2][3][4][8][9][10][11][12][13] The decreased hot deformability at the upper limit is attributed to the characteristics of carbides, i.e., to their type, size, shape, size-and/or spatial-distributions, fraction, melting point of eutectic carbides and/or other phases, etc. Also at lower temperature limit charac-teristics of carbides (i.e., with additionally precipitated secondary carbides) are responsible for pore deformability, where this is related also with the effect of a decreased recrystallization rate.…”

Section: Introductionmentioning

confidence: 99%

“…These areas are in combination with increased tensile strains additionally subjected to accelerated heating and/or cooling. 24 Some recently published works [3][4] reported that by proper selection of the process parameters prior to hot deformation the increase of hot deformability can be achieved.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Improving of hot workability and expanding the temperature range of safe hot working for M35 high-speed steel

Peruš¹,

Terčelj²,

Godec³

et al. 2017

Mater. Tehnol.

Self Cite

View full text Add to dashboard Cite

Increasing the hot workability and expanding the temperature working range for M35 high-speed steel (HSS) by industrial hot rolling as well as by hot compression tests have been studied and achieved. The types of carbides for as-cast as well as for wrought states were revealed by EBSD and the optimal soaking temperatures for both microstructural states were assessed. The soaking temperature had a decisive influence on the characteristics of carbides that lead to improving the intrinsic hot workability as well as to considerably expanding the temperature range of safe hot working down to 850°C. The apparent activation energy for hot working which amounts 639 kJ/mol as well as constants of the hyperbolic sine constitutive equation for extended temperature range have been calculated. Industrial practice confirms the laboratory results.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Improving of hot workability and expanding the temperature range of safe hot working for M35 high-speed steel

Peruš¹,

Terčelj²,

Godec³

et al. 2017

Mater. Tehnol.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Consequently, eutectoid point S and point of maximum solubility of carbon in austenite-E are moved to the lower carbon contents. Due to this effect, ledeburite is present in structure of these steels at the carbon content below 2.11 wt.% [16]. The common carbon content in ledeburitic steels is higher than 0.7 wt.%.…”

Section: Introductionmentioning

confidence: 99%

Hot Deformation Process Analysis and Modelling of X153CrMoV12 Steel

Krbaťa

Eckert

Križan

et al. 2019

Metals

View full text Add to dashboard Cite

Analysis of the high temperature plastic behavior of high-strength steel X153CrMoV12 was developed in the temperature range of 800–1200 °C and the deformation rate in the range of 0.001–10 s−1 to the maximum value of the true strain 0.9%. Microstructural changes were observed using light optical microscopy (LOM) as well as atomic force microscopy (AFM). The effect of hot deformation temperature on true stress, peak stress and true strain was evaluated from the respective flow curves. Based on these results, steel transformation was discussed from the dynamic recovery and recrystallization point of view. Furthermore, a present model, taking into account the Zener–Hollomon parameter, was developed to predict the true stress and strain over a wide range of temperatures and strain rates. Using constitutive equations, material parameters and activation energy were derived, which can be subsequently applied to other models related to hot deformation behavior of selected tool steels. The experimental data were compassed to the ones obtained by the predictive model with the correlation coefficient R = 0.98267. These results demonstrate an appropriate applicability of the model for experimental materials in hot deformation applications.

show abstract

“…It is worth noting that the redistributive behavior of the solute atoms in the solidification process resulted in the uneven distribution of the alloying elements in the cast microstructure. The dendrite segregation caused by the aforementioned phenomenon seriously affects the hot workability of the ingot and reduces the mechanical properties of metallic materials . Therefore, high‐temperature homogenization is often used to reduce or eliminate the microsegregation and improve the hot deformation stability of die steel ingots …”

Section: Introductionmentioning

confidence: 99%

Investigation on Alloying Element Distribution in Cr8Mo2SiV Cold‐Work Die Steel Ingot during Homogenization

Ren

et al. 2018

steel research int.

View full text Add to dashboard Cite

The effect of different homogenization parameters on the microstructure and element distribution of Cr8Mo2SiV cold-work die steel ingot is investigated. Based on the Thermo-Calc software and laser confocal microscopy, the optimal heat treatment temperature range from 1160 to 1230 C is obtained for experimental steel. In order to improve dendritic segregation of as-cast microstructure consisting of a large number of network eutectic carbides enriched in alloying elements, the homogenization treatment is carried out at the above determined temperatures for 0.5, 1, and 3 h, respectively. Then, according to the segregation ratio of Cr element, the homogenization at 1180 C for 3 h successfully eliminates the microsegregation, which is in agreement with the calculation of the diffusion kinetic model of Cr element.

show abstract

Microstructural characterization during the hot deformation of 1.17C–11.3Cr–1.48V–2.24W–1.35Mo ledeburitic tool steel

Cited by 25 publications

References 23 publications

Improving of hot workability and expanding the temperature range of safe hot working for M35 high-speed steel

Improving of hot workability and expanding the temperature range of safe hot working for M35 high-speed steel

Hot Deformation Process Analysis and Modelling of X153CrMoV12 Steel

Investigation on Alloying Element Distribution in Cr8Mo2SiV Cold‐Work Die Steel Ingot during Homogenization

Contact Info

Product

Resources

About