Abstract

The effects of intercritical heat treatment (ICHT) on the microstructure and mechanical properties of C-Mn, 8630 type, and high strength low alloy (HSLA) cast steels have been investigated. A review of the cast steel literature indicates that intercritical heat treatment has been reported to result in improvements in low temperature toughness when used instead of standard quench and temper or normalize and temper heat treatments. However, it is not clear if this reported benefit of intercritical heat treatment can be achieved without corresponding decreases in strength and hardness.

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