Effect of rolling in the intercritical region on the tensile properties of dual-phase steel

Journal Article · Tue Dec 01 04:00:00 EST 1998 · Journal of Materials Engineering and Performance

DOI:https://doi.org/10.1361/105994998770347341· OSTI ID:320818

Ahmad, E ^[1]; Priestner, R ^[2]

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1. PINSTECH, Islamabad (Pakistan)
2. Manchester Materials Science Center (United Kingdom)

A steel containing 0.088 wt% C, 1.2 wt% Mn, and 0.78 wt% Cr was rolled at intercritical temperature (790 C) and quenched to produce dual-phase microstructure. Rolling caused anisotropic increase in tensile strength and little change in ductility. The results suggest that rolling increased strength by a combination of strengthening of the ferrite and an increase in the stress transferred to the martensite. Up to 20% rolling reduction strengthened the ferrite by work hardening, larger reductions then reduced the strength of ferrite, anisotropically, due to increased recovery. Subgrains in ferrite were observed after rolling in the intercritical region which can contribute to the ultimate strength of the rolled material.

• OSTI ID: 320818
• Journal Information: Journal of Materials Engineering and Performance, Journal Name: Journal of Materials Engineering and Performance Journal Issue: 6 Vol. 7; ISSN 1059-9495; ISSN JMEPEG
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANISOTROPY
CORRELATIONS
FERRITE
LOW ALLOY STEELS
MARTENSITE
ROLLING
STRAIN HARDENING
STRESSES
TENSILE PROPERTIES