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- Title
Enhancement of work‐hardening behavior of dual phase steel by heat treatment.
- Authors
Nasiri, Z.; Mirzadeh, H.
- Abstract
Abstract: The work‐hardening response and mechanical properties of dual phase steels originated from different initial microstructures under low and high martensite volume fractions were investigated using a typical carbon‐manganese steel. The modified Crussard‐Jaoul analysis was used for studying the work‐hardening stages and the deformation behavior of ferrite and martensite. It was revealed that the initial martensitic microstructure before intercritical annealing is much better than the full annealed banded ferritic‐pearlitic and spheroidized microstructures in terms of work‐hardening capacity and strength‐ductility trade off. By increasing the amount of martensite, via intercritical annealing at higher temperatures, the ductility decreased but the tensile toughness of dual phase steels increased toward reaching the domain of extra‐advanced high‐strength steels due to the enhancement of work‐hardening rate.
- Subjects
HEAT treatment of metals; METAL hardness; MECHANICAL properties of metals; METAL microstructure; STRESS fractures (Orthopedics)
- Publication
Materialwissenschaft und Werkstoffechnik, 2018, Vol 49, Issue 9, p1081
- ISSN
0933-5137
- Publication type
Article
- DOI
10.1002/mawe.201700122