Evaluation of the transformation mechanisms and mechanical properties of ferrite: martensite microalloyed steels
AUTOR(ES)
Henry, Ovri, Monde, Kamma Celestine
FONTE
Materials Research
DATA DE PUBLICAÇÃO
2008-03
RESUMO
The influence of starting point microstructures on the transformation mechanisms and mechanical properties of a micro alloyed steel after annealing in the alpha + gamma region have been investigated. Three different microstructures: austenite, pearlite in a ferrite matrix and martensite were used as starting point microstructures for the production of dual (alpha + ) phase structures in the test steel. Photomicrographs obtained from metallographic examination of the heat treated samples were used as criteria for the assessment of results obtained from impact toughness and hardness testing. The results obtained showed that the transformation mechanisms and hence the morphology of ferrite - martensite microalloyed steels are strongly influenced by their initial microstructural details. Ferrite - martensite structures produced via the intercritical quench (IQ) treatment, with martensite as the starting point microstructure, have the best combination of hardness and impact energy.
Documentos Relacionados
- Effect of thermo-mechanical parameters on microstructure and mechanical properties of microalloyed steels
- Effect of initial microstructures on the properties of Ferrite-Martensite Dual-Phase pipeline steels with Strain-Based design
- Study on microstructures and work hardening behavior of ferrite-martensite dual-phase steels with high-content martensite
- The Analysis of the Microstructure and Mechanical Properties of Low Carbon Microalloyed Steels after Ultra Fast Cooling
- Influence of Niobium and Molybdenum on Mechanical Strength and Wear Resistance of Microalloyed Steels