Effects of Rapid Induction Heating on Transformations in 0.6% C Steels | Zendy

Robert Cryderman | Zendy; Dalton Garrett | Zendy; Zachary Schlittenhart | Zendy

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Effects of Rapid Induction Heating on Transformations in 0.6% C Steels

Author(s) -

Robert Cryderman,

Dalton Garrett,

Zachary Schlittenhart

Publication year - 2019

Publication title -

proceedings of the ... asm heat treating society conference

Language(s) - English

Resource type - Conference proceedings

eISSN - 2769-6367

pISSN - 2769-6340

DOI - 10.31399/asm.cp.ht2019p0106

Subject(s) - austenite , materials science , dilatometer , cementite , metallurgy , martensite , ferrite (magnet) , quenching (fluorescence) , isothermal process , alloy , bainite , microstructure , diffusionless transformation , annealing (glass) , induction heating , composite material , thermodynamics , thermal expansion , physics , electrical engineering , quantum mechanics , electromagnetic coil , fluorescence , engineering

Rapid induction hardening of martensitic steel can attain the very high strength levels needed for light-weighting components subjected to high operating stresses. Specimens of martensitic 0.6% C steels were heat treated using a dilatometer to investigate the effects of heating rates of 5 to 500 °C/s to temperatures of 850 to 1050 °C on the transformation to austenite and subsequent transformation to martensite during quenching. Selected specimens were quenched after partial transformation to austenite to assess the initial cementite precipitate size formed in ferrite during heating. Other specimens were isothermally held at the austenitizing temperature to assess cementite dissolution rates. Higher heating rates increased the Ac1 and Ac3 temperatures, and lowered the Ms temperature. Alloy content and prior microstructure also influenced the transformation temperatures.

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