Effect of strain aging on the strength coefficient and strain-hardening exponent of construction-grade steels

Journal Article · Wed Jun 01 00:00:00 EDT 1994 · Journal of Materials Engineering and Performance; (United States)

DOI:https://doi.org/10.1007/BF02645330· OSTI ID:6989480

Lou, S; Northwood, D O ^[1]

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1. Univ. of Windsor, Ontario (Canada). Mechanical Engineering Dept.

Two construction-grade steels--G40.21 350 WT and G40.21 350 AT--were tensile tested under a range of temperature and strain-rate conditions. Results showed that both the strain-hardening exponent and strength coefficient at first decrease with increasing temperature, then increase with increasing temperature and reach a maximum at a temperature between 523 and 573 K before decreasing. With increasing temperature, the strain-rate dependence of the strain-hardening exponent and the strength coefficient changes from positive to negative. This behavior reflects the effects of strain aging on the strain-hardening exponent and the strength coefficient.

• OSTI ID: 6989480
• Journal Information: Journal of Materials Engineering and Performance; (United States), Vol. 3:3; ISSN 1059-9495
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
STEELS
MECHANICAL PROPERTIES
EXPERIMENTAL DATA
MECHANICAL TESTS
MICROSTRUCTURE
TEMPERATURE DEPENDENCE
TENSILE PROPERTIES
YIELD STRENGTH
ALLOYS
DATA
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS TESTING
NUMERICAL DATA
TESTING
360103* - Metals & Alloys- Mechanical Properties