Hardenability of austenite in a dual-phase steel

Journal Article · Tue Jun 01 04:00:00 EDT 1999 · Journal of Materials Engineering and Performance

DOI:https://doi.org/10.1361/105994999770346954· OSTI ID:364025

Sarwar, M ^[1]; Priestner, R ^[2]

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1. PAEC Islamabad (Pakistan)
2. Manchester Materials Science Centre (United Kingdom)

A low-carbon, low-alloy steel was intercritically heat treated and thermomechanically processed to study the martensitic hardenability of austenite present. Rolling of the two-phase ({alpha} + {gamma}) microstructure elongated austenite particles and reduced their martensitic hardenability because the {alpha}/{gamma} interface where new ferrite forms during cooling was increased by the particle elongation. The martensite particles obtained in rolled material were also elongated or fibered in the rolling direction. Therefore, the thermomechanical processing of a two-phase ({alpha} + {gamma}) mixture has the detrimental effect of increasing the quenching power needed to yield a specific amount of martensite.

• OSTI ID: 364025
• Journal Information: Journal of Materials Engineering and Performance, Journal Name: Journal of Materials Engineering and Performance Journal Issue: 3 Vol. 8; ISSN 1059-9495; ISSN JMEPEG
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AUSTENITE
FERRITE
LOW ALLOY STEELS
MARTENSITE
MECHANICAL PROPERTIES
METALLOGRAPHY
MICROSTRUCTURE
THERMOMECHANICAL TREATMENTS