Kinetics of isochronal austenization in modified high Cr ferritic heat-resistant steel

Liu, Chenxi; Liu, Yongchang; Zhang, Dantian; Zhang, Yan

doi:10.1007/s00339-011-6517-7

Cited by 20 publications

(9 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It means that the nucleation model in austenitic transformation belongs to the site saturation nucleation model [22,29]. Therefore, the nucleation rate, N º , can be expressed as [7].…”

Section: Austenitic Transformation Kineticsmentioning

confidence: 99%

“…In general, a classic modular transformation model can be divided into three parts: nucleation, growth, and impingement [22,23]. Particle nucleates and grows at certain rates, while impingement is a geometric nature and occurs due to the continuous nucleation and growth [24].…”

Section: Introductionmentioning

confidence: 99%

“…Particle nucleates and grows at certain rates, while impingement is a geometric nature and occurs due to the continuous nucleation and growth [24]. The transformation process can be simulated separately when hard impingement is adopted [22,25]. In particular, in the classical Johnson-Mehl-AvramiKolmogorov model (JMAK model), the relationship expression between phase volume fraction and temperature or time was obtained.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The influence of chromium on the pearlite-austenite transformation kinetics of the Fe–Cr–C ternary steels

Kong

Liu

et al. 2015

Journal of Alloys and Compounds

View full text Add to dashboard Cite

“…It means that the nucleation model in austenitic transformation belongs to the site saturation nucleation model [22,29]. Therefore, the nucleation rate, N º , can be expressed as [7].…”

Section: Austenitic Transformation Kineticsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The influence of chromium on the pearlite-austenite transformation kinetics of the Fe–Cr–C ternary steels

Kong

Liu

et al. 2015

Journal of Alloys and Compounds

View full text Add to dashboard Cite

“…The volume fractions of phases were calculated by applying the lever rule, according to the recorded relative length changes by dilatometric measurement. The detail calculation for lever rule can be referred to [19].…”

Section: Methodsmentioning

confidence: 99%

Non-instantaneous growth characteristics of martensitic transformation in high Cr ferritic creep-resistant steel

et al. 2016

Self Cite

View full text Add to dashboard Cite

Microstructural observation and high-resolution dilatometry were employed to investigate kinetics of martensitic transformation in high Cr ferritic creep-resistant steel upon different quenching/cooling rates. By incorporating the classical athermal nucleation and impingement correction, a non-instantaneous growth model for martensitic transformation has been developed. The developed model describes austenite/martensite interface mobility during martensite growth. The growth rate of martensite is found to be varied from 1 9 10 -6 to 3 9 10 -6 m/s. The low interface mobility suggests that it is not appropriate to presume the instantaneous growth behavior of martensite. Moreover, based on the proposed model, nucleation rate of martensite under different cooling rates is found to be nearly the same, while the growth rate of martensite is promoted by increasing the cooling rate.

show abstract

“…In the case of initial nucleation, austenitic transformation can be assigned to the site saturation model, therefore the quantity of the new particles formed is not changed at the nucleation site during the austenitization process [25]. Assuming a cubic growth, the geometry factor (g) is 1 [26].…”

Section: Microstructure Analysismentioning

confidence: 99%

Kinetics of the austenitization in the Fe-Mo-C ternary alloys during continuous heating

Kong

Liu

et al. 2016

Open Physics

View full text Add to dashboard Cite

Abstract:The influence of molybdenum on the microstructure and kinetics of the austenization of the Fe-Mo-C ternary alloys is analyzed using differential scanning calorimetry (DSC) and the Johnson-Mehl-AvramiKolmogorov model (JMAK) in the temperature range from 293 K to 1373 K. The as-cast microstructure and microstructure after DSC test are obtained using optical microscopy (OM) and scanning electron microscopy (SEM). It was seen that with an increasing Mo concentration, the lamellar pearlite is spherized and the austenite grain size decreases. In addition, both DSC curves and the JMAK model show that the initial (Ac1) and the final (Ac3) temperature of the phase transition increases with an increasing Mo concentration. It was also seen that increasing the Mo concentration, the diffusion activation energy (DAE) increases and the pre-exponential factor of diffusion (DPEF) decreases due to a change in both the austenitic nucleation rate and the diffusion of the elements caused by the introduction of Mo.

show abstract

Kinetics of isochronal austenization in modified high Cr ferritic heat-resistant steel

Cited by 20 publications

References 24 publications

The influence of chromium on the pearlite-austenite transformation kinetics of the Fe–Cr–C ternary steels

The influence of chromium on the pearlite-austenite transformation kinetics of the Fe–Cr–C ternary steels

Non-instantaneous growth characteristics of martensitic transformation in high Cr ferritic creep-resistant steel

Kinetics of the austenitization in the Fe-Mo-C ternary alloys during continuous heating

Contact Info

Product

Resources

About