Fine structure of martensitic phases in the Cu-24% Ga alloy

Мирзаев, Д. А.; Счастливцев, В. М.; Yakovleva, I. L.; Рущиц, С. В.; Khlebnikova, Yu. V.

doi:10.1134/s0031918x10010096

Cited by 1 publication

(2 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The two kinds of critical cooling rates were evaluated from similar graphs for the remaining 30 binary or ternary Fe alloys, [5][6][7][8][9][10][11][12] utilizing the first experimental point on the M P s line for v 0 cr and the last experimental point on the M L s line for v 00 cr . The values were read off a scanned copy of Figure 1 and the other graphs using the Plotdigitizer software.…”

Section: Critical Time For Complete Formation Of Lath Martensitementioning

confidence: 99%

“…Exceptions have been classified as isothermal martensite. [1][2][3][4] A Russian group [5][6][7][8][9][10][11][12] instead applied ultra-rapid quenching on steels that could then form both lath and plate martensite. They found that the formation of lath martensite can be suppressed by very high cooling rates, and the rate of formation should, thus, be limited although at a very high level.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Evaluation and Modeling of the Rate of Formation of Lath Martensite in Fe-C Alloys, Extracted from Ultra-Rapid Quenching Experiments

Kumpati,

Hillert,

Borgenstam

2024

Metall Mater Trans A

View full text Add to dashboard Cite

Isothermal information is rarely available for the formation of martensite in Fe or Fe alloys due to a very high rate of transformation compared to the rate of heat conduction. Such information has now been extracted for lath martensite in some sets of Fe alloys from available information on ultra-rapid quenching but only at a single temperature for each alloy, related to its two MS temperatures. The temperature dependence could, thus, be studied only on binary sets of alloys. Those results have been applied to mathematical models based on the Arrhenius equation and illustrated with Arrhenius plots. For three sets of binary Fe alloys, a large group of rates came close to the rate of an almost pure and carbon-free Fe-C alloy. It illustrated that Cr, Ni, and Ru in low contents have relatively small effects on the rate of formation of lath martensite in Fe. It also demonstrated that the present measurements have considerable reproducibility. In contrast, a set of Fe-C alloys did not give a straight line in the Arrhenius plot. Using a new mathematical model based on the concept of the Arrhenius equation to express the effect of carbon, it was possible to predict the rate of formation of lath martensite for Fe-C alloys with fixed C content and their temperature dependencies which are not available experimentally due to the very high rate of formation.

show abstract