TY - GEN
T1 - EFFECT OF LOW TEMPERATURE ON APPARENT FATIGUE THRESHOLD STRESS INTENSITY FACTORS.
AU - Esaklul, Khlefa A.
AU - Yu, Weikang
AU - Gerberich, William W.
PY - 1985
Y1 - 1985
N2 - Near-threshold fatigue crack growth in high-strength low-alloy (HSLA) steel, Fe, and Fe-Si alloys was found to depend on test temperature from room temperature down to 123 K. Near-threshold crack growth rates were lowered and threshold stress intensity factors increased with decreasing temperature. A 'prominent' closure was observed for all test temperatures and materials and was further confirmed by the examination of fracture surfaces. The magnitude of closure increased with decreasing temperature, suggesting a dependence on yield strength and fracture morphology.
AB - Near-threshold fatigue crack growth in high-strength low-alloy (HSLA) steel, Fe, and Fe-Si alloys was found to depend on test temperature from room temperature down to 123 K. Near-threshold crack growth rates were lowered and threshold stress intensity factors increased with decreasing temperature. A 'prominent' closure was observed for all test temperatures and materials and was further confirmed by the examination of fracture surfaces. The magnitude of closure increased with decreasing temperature, suggesting a dependence on yield strength and fracture morphology.
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M3 - Conference contribution
AN - SCOPUS:0021899893
SN - 0803104111
T3 - ASTM Special Technical Publication
SP - 63
EP - 83
BT - ASTM Special Technical Publication
PB - ASTM
ER -