Effect of intercritical quenching on low temperature toughness of high strength ship hull steel
Effect of QT and QLT heat treatment on microstructure and properties of high strength copper-bearing ship hull steel was contrasted. The results show that the aging hardening behavior of the steel is not changed by QLT process, but the low temperature toughness of the steel is greatly improved by QLT process, and excellent combination of strength and toughness can be obtained in a wide range of tempering temperature （550-650 ℃ ）. Grain fineness, dual phase structure and reversed anstenite are the main reasons which improve the low temperature toughness effectively by QLT treatment.
copper-bearing ship hull steelintercritical quenchinglow temperature toughness
NETL
NSTL
万方数据
维普
