Numerical analysis of phase transformations and residual stresses in steel cone-shaped elements hardened by induction and flame methods

Bokota, A.; Iskierka, Sławomir

doi:10.1016/s0020-7403(97)00084-2

Cited by 12 publications

(7 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For considered steel determine, that m C ¼3.3 (in (10)) if the start temperature of martensite transformations is equal M s ¼493 K, and end this transformations is in temperature M f ¼173 K, whereas the coefficient k (in (9)) is equal to k ¼0.0144 [2][3][4]8,19,25].…”

Section: Solid-state Phase Transformationsmentioning

confidence: 99%

“…This, for example, enabled to track thermo-physical values changes depending on temperature and phase composition with increased loading [1,8,19,25,35].…”

Section: Mechanical Phenomenamentioning

confidence: 99%

“…Phenomena associated with heat treatment are complex and not yet adequately explained. Improvement in this field of numerical solutions is particularly forced by industry which, striving for deployment of state-of-the-art technologies and reduction of costs, is demanding continuous enhancement of tool thermal treatment [4,[6][7][8].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The numerical model prediction of phase components and stresses distributions in hardened tool steel for cold work

Domański

Bokota²

2015

International Journal of Mechanical Sciences

Self Cite

View full text Add to dashboard Cite

Section: Solid-state Phase Transformationsmentioning

confidence: 99%

“…This, for example, enabled to track thermo-physical values changes depending on temperature and phase composition with increased loading [1,8,19,25,35].…”

Section: Mechanical Phenomenamentioning

confidence: 99%

See 1 more Smart Citation

The numerical model prediction of phase components and stresses distributions in hardened tool steel for cold work

Domański

Bokota²

2015

International Journal of Mechanical Sciences

Self Cite

View full text Add to dashboard Cite

“…10). The cooling of boundary contact with air was modelled boundary conditions (3.15) taking α 0 =30 W/(m 2 K) [4,9,22]. The initial structure was pearlite.…”

Section: Simulation Example Of Hardening Elements Of Machinesmentioning

confidence: 99%

Numerical Models of Hardening Phenomena of Tools Steel Base on the TTT and CCT Diagrams

Domański¹,

Bokota²

2011

Archives of Metallurgy and Materials

View full text Add to dashboard Cite

Numerical Models of Hardening Phenomena of Tools Steel Base on the TTT and CCT DiagramsIn work the presented numerical models of tool steel hardening processes take into account thermal phenomena, phase transformations and mechanical phenomena. Numerical algorithm of thermal phenomena was based on the Finite Elements Methods in Galerkin formula of the heat transfer equations. In the model of phase transformations, in simulations heating process, isothermal or continuous heating (CHT) was applied, whereas in cooling process isothermal or continuous cooling (TTT, CCT) of the steel at issue. The phase fraction transformed (austenite) during heating and fractions of ferrite, pearlite or bainite are determined by Johnson-Mehl-Avrami formulas. The nescent fraction of martensite is determined by Koistinen and Marburger formula or modified Koistinen and Marburger formula. In the model of mechanical phenomena, apart from thermal, plastic and structural strain, also transformations plasticity was taken into account. The stress and strain fields are obtained using the solution of the Finite Elements Method of the equilibrium equation in rate form. The thermophysical constants occurring in constitutive relation depend on temperature and phase composite. For determination of plastic strain the Huber-Misses condition with isotropic strengthening was applied whereas for determination of transformation plasticity a modified Leblond model was used. In order to evaluate the quality and usefulness of the presented models a numerical analysis of temperature field, phase fraction, stress and strain associated hardening process of a fang lathe of cone shaped made of tool steel was carried out.

show abstract

“…The poisson ratio is 0,3 for each phase. For each metallurgical phase, the flow stress is assumed to vary linearly with temperature from ambient temperature to 800 • C [15,28].…”

Section: Mechanical Modellingmentioning

confidence: 99%

Residual stresses in surface induction hardening of steels: Comparison between experiment and simulation

Coupard

Palin‐Luc

Bristiel

et al. 2008

Materials Science and Engineering: A

View full text Add to dashboard Cite

is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. AbstractDeep induction hardening has been performed on two batches of smooth cylindrical specimens with a hardening depth respectively around 2 mm and 3 mm. The distributions of axial and circumferential residual stresses are analysed for the two specimen batches by X-ray diffraction technique. The radial normal stress field is estimated through the use of the well known Moore and Evans correction. Finally, the experimental residual stresses are compared with those obtained from a multiphysic finite element modelling of the whole induction treatment process, including electromagnetic, thermal, metallurgical and mechanical phenomena. The simulated residual stress field is in good agreement with X-ray analysis especially at depths lower than one-tenth the specimen diameter. At deeper depths, a correction of the experimental X-ray analysis has been done to obtain realistic values.

show abstract

Numerical analysis of phase transformations and residual stresses in steel cone-shaped elements hardened by induction and flame methods

Cited by 12 publications

References 12 publications

The numerical model prediction of phase components and stresses distributions in hardened tool steel for cold work

The numerical model prediction of phase components and stresses distributions in hardened tool steel for cold work

Numerical Models of Hardening Phenomena of Tools Steel Base on the TTT and CCT Diagrams

Residual stresses in surface induction hardening of steels: Comparison between experiment and simulation

Contact Info

Product

Resources

About