Kinetics of Precipitation from Quenched Low Carbon Steel

Hanawa, Kenzo; Mimura, Tsuyoshi

doi:10.1007/bf02644709

Cited by 12 publications

(5 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In other studies, some attempts have been made [18][19][20][21] to deconvolute such experimental master curves into components due to individual processes, but it is difficult to see whether some of these fitting parameters have any physical meaning.…”

Section: Introductionmentioning

confidence: 98%

See 1 more Smart Citation

Analysis of precipitation mechanisms in tempering of low-alloy steels using the kinetic theory of the overlapping transformations

et al. 2011

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 98%

“…In view of the reasoning presented in the previous paragraphs, it is thought that the presented approach (KTOPT) is more appropriate than the application of kinetic equations (18) and (19), to the entire experimental data set, to describe the main mechanisms of the diffusion-controlled tempering reactions (first and third stages).…”

mentioning

confidence: 98%

Analysis of precipitation mechanisms in tempering of low-alloy steels using the kinetic theory of the overlapping transformations

et al. 2011

View full text Add to dashboard Cite

“…Earlier researchers investigated the precipitation behavior of cementite, most notably Abe and Suzuki [16], Abe et al [17] and Hanawa and Mimura [18], without accounting for the impact on thermal conductivity. They investigated the effect of carbon clustering and precipitation on the electrical resistivity and thermoelectric power of a 0.046 mass%-C steel after aging at temperatures spanning from 35 to 300 C [16].…”

Section: Introductionmentioning

confidence: 99%

Diffusion processes during cementite precipitation and their impact on electrical and thermal conductivity of a heat-treatable steel

et al. 2016

View full text Add to dashboard Cite

The thermal conductivity of heat-treatable steels is highly dependent on their thermo-mechanical history and the alloying degree. Besides phase transformations like the martensitic c ! a 0 or the degree of deformation, the precipitation of carbides exerts a strong influence on the thermal conductivity of these steels. In the current work, thermal and electrical conductivity of a 0.45 mass% C steel is investigated during an isothermal heat treatment at 700 C and correlated with the precipitation kinetics of cementite. To include processes in the shortterm as well as in the long-term range, annealing times from 1 s to 200 h are applied. This investigation includes microstructural characterization, diffusion simulations, and electrical and thermal conductivity measurements. The precipitation of carbides is connected with various microstructural processes which separately influence the thermophysical properties of the steel from the solution state to the short-term and long-term annealing states. In the early stages of cementite growth, an interstitial-dominated diffusion reaction takes place (carbon diffusion in the metastable condition of local equilibrium non-partitioning). Afterwards, substitutional-dominated diffusion controls the kinetics of the reaction. The electrical and thermal conductivity increase differently during the two stages of the carbide precipitation. The increment is associated to the binding of alloying elements into the carbides and to the reduction of the distortion of the martensitic matrix. Both factors increase the electron density and reduce the electron and phonon scattering. The correlation of the precipitation kinetics and the thermophysical properties are of general interest for the design of heat-treatable steels.

show abstract

“…In other works some attempts have been made [34][35][36][37] to deconvolute such experimental master curves into components due to individual processes, but it is difficult to see whether some of these fitting parameters have any physical meaning.…”

Section: Introductionmentioning

confidence: 99%

Comments About the Strengthening Mechanisms in Commercial Microalloyed Steels and Reaction Kinetics on Tempering in Low-Alloy Steels

Morales¹

2011

Alloy Steel - Properties and Use

View full text Add to dashboard Cite

Kinetics of Precipitation from Quenched Low Carbon Steel

Cited by 12 publications

References 8 publications

Analysis of precipitation mechanisms in tempering of low-alloy steels using the kinetic theory of the overlapping transformations

Analysis of precipitation mechanisms in tempering of low-alloy steels using the kinetic theory of the overlapping transformations

Diffusion processes during cementite precipitation and their impact on electrical and thermal conductivity of a heat-treatable steel

Comments About the Strengthening Mechanisms in Commercial Microalloyed Steels and Reaction Kinetics on Tempering in Low-Alloy Steels

Contact Info

Product

Resources

About