Effects of reheating rate and holding time during tempering on microstructure and properties of a 960-MPa-grade low-alloy steel were investigated. Different reheating rates from 1 to 300 K s−1 and holding time from 5 to 1200 s on tempering at 823 K were carried out. The combination of high reheating rate and short holding time is obviously beneficial forgetting more uniformly distributed and refined carbides, which are believed to contribute to the high strength and high toughness. Yield strength of 960 MPa with elongation of ∼16 and impact toughness of 76 J (half size specimen) at 233 K was obtained by induction reheating tempering at 823 K for 5 s at a rate of 373 K s−1.
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