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2009•Acta Metallurgica Sinica (English Letters)Requires access

KINETICS OF PHASE TRANSFORMATION FOR DEFORMED AUSTENITE TO PROEUTECTOID FERRITE

LI Jian Sun Fuyu Central Iron

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Abstract

The volume fraction of proeutectoid ferrite transformed from deformed austenite fv as a func- tion of isothermal time t has been investigated in 0.037% Nb microalloyed steel.The results show that lnln(1-fv)~(-1) vs Int relation does not follow the Avrami equation strictly and con- sists of two straight lines.By comparing the differences between the results and Cahn's theory, the authors' idea has been expounded.

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The volume fraction of proeutectoid ferrite transformed from deformed austenite fv as a func- tion of isothermal time t has been investigated in 0.037% Nb microalloyed steel.The results show that lnln(1-fv)~(-1) vs Int relation does not follow the Avrami equation strictly and con- sists of two straight lines.By comparing the differences between the results and Cahn's theory, the authors' idea has been expounded.

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Available abstract

The volume fraction of proeutectoid ferrite transformed from deformed austenite fv as a func- tion of isothermal time t has been investigated in 0.037% Nb microalloyed steel.The results show that lnln(1-fv)~(-1) vs Int relation does not follow the Avrami equation strictly and con- sists of two straight lines.By comparing the differences between the results and Cahn's theory, the authors' idea has been expounded.

Key concepts: Austenite, Isothermal process, Ferrite (magnet), Volume fraction, Materials science, Isothermal transformation diagram, Metallurgy, Thermodynamics

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