TY - JOUR
T1 - Mechanical properties of weathering steels at elevated temperatures
AU - Glassman, Jonathan D.
AU - Gomez, Alex
AU - Garlock, Maria E.Moreyra
AU - Ricles, James
N1 - Funding Information:
Funding for this research was provided by the state of New Jersey Department of Transportation (DOT) and the U.S. DOT Federal Highway Administration through the Center for Advanced Infrastructure Transportation (CAIT). This research was also made with Government support under and awarded by DoD, Air Force Office of Scientific Research, National Defense Science and Engineering Graduate (NDSEG) Fellowship, 32 CFR 168a, provided to Dr. Glassman. The authors gratefully acknowledge the advice and support of Carl Bowman, Robin J. Hendricks, and Dr. Sougata Roy of ATLSS (Advanced Technology for Large Structural Systems) Engineering Research Center at Lehigh University for their technical support. The work is based on the Master's thesis of Samy Labbouz [ 21 ], graduate alumni of Princeton University, who is gratefully acknowledged. In addition, the authors gratefully acknowledge High Steel Structures Inc. of Lancaster, PA and Lehigh University's ATLSS Engineering Research Center for donating the A588 and A709 steel, respectively. All opinions, findings, and conclusions expressed in this paper are of the authors and do not necessarily reflect the policies and views of the sponsors.
Funding Information:
Funding for this research was provided by the state of New Jersey Department of Transportation (DOT) and the U.S. DOT Federal Highway Administration through the Center for Advanced Infrastructure Transportation (CAIT). This research was also made with Government support under and awarded by DoD, Air Force Office of Scientific Research, National Defense Science and Engineering Graduate (NDSEG) Fellowship, 32 CFR 168a, provided to Dr. Glassman. The authors gratefully acknowledge the advice and support of Carl Bowman, Robin J. Hendricks, and Dr. Sougata Roy of ATLSS (Advanced Technology for Large Structural Systems) Engineering Research Center at Lehigh University for their technical support. The work is based on the Master's thesis of Samy Labbouz [21], graduate alumni of Princeton University, who is gratefully acknowledged. In addition, the authors gratefully acknowledge High Steel Structures Inc. of Lancaster, PA and Lehigh University's ATLSS Engineering Research Center for donating the A588 and A709 steel, respectively. All opinions, findings, and conclusions expressed in this paper are of the authors and do not necessarily reflect the policies and views of the sponsors.
Publisher Copyright:
© 2020 The Authors
PY - 2020/5
Y1 - 2020/5
N2 - Weathering steels are high strength low alloy steels, with a resistance to corrosion provided through their alloying elements to form a dense layer of rust to stop further corrosion. While their mechanical material properties are well-known at ambient temperature, they have not been studied when exposed to high temperatures (as found in fires) and then cooled. This research examines mechanical properties such as Young's modulus, E, yield stress, σy, ultimate stress, σu, fracture toughness, and surface hardness for weathering steel (A588) and compares them to A709/A992 non-weathering steel. Such a comparison is done at ambient (as a control) and for temperatures ranging from 20 °C (70 °F), to 815 °C (1500 °F). Cooling by air and cooling by water examines the post-fire residual strength. Results show that A588 steel specimens have a slightly larger reduction in σu at elevated temperatures compared to A709 steel specimens. Steel specimens heated up to 649 °C (1200 °F) and allowed to cool in either air or water can be expected to possess residual (post-fire) mechanical properties that are comparable to their original ambient temperature mechanical properties. Steel specimens heated to 815 °C (1500 °F) and cooled in water can experience significant increases in their residual ambient temperature σy and σu values, but also increasingly brittle behavior.
AB - Weathering steels are high strength low alloy steels, with a resistance to corrosion provided through their alloying elements to form a dense layer of rust to stop further corrosion. While their mechanical material properties are well-known at ambient temperature, they have not been studied when exposed to high temperatures (as found in fires) and then cooled. This research examines mechanical properties such as Young's modulus, E, yield stress, σy, ultimate stress, σu, fracture toughness, and surface hardness for weathering steel (A588) and compares them to A709/A992 non-weathering steel. Such a comparison is done at ambient (as a control) and for temperatures ranging from 20 °C (70 °F), to 815 °C (1500 °F). Cooling by air and cooling by water examines the post-fire residual strength. Results show that A588 steel specimens have a slightly larger reduction in σu at elevated temperatures compared to A709 steel specimens. Steel specimens heated up to 649 °C (1200 °F) and allowed to cool in either air or water can be expected to possess residual (post-fire) mechanical properties that are comparable to their original ambient temperature mechanical properties. Steel specimens heated to 815 °C (1500 °F) and cooled in water can experience significant increases in their residual ambient temperature σy and σu values, but also increasingly brittle behavior.
KW - Elevated temperature
KW - Fire
KW - Material properties
KW - Residual strength
KW - Weathering steel
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U2 - 10.1016/j.jcsr.2020.105996
DO - 10.1016/j.jcsr.2020.105996
M3 - Article
AN - SCOPUS:85081012192
SN - 0143-974X
VL - 168
JO - Journal of Constructional Steel Research
JF - Journal of Constructional Steel Research
M1 - 105996
ER -