| Autor: |
Nguyen, Thanh Tuan, Park, Jaeyeong, Baek, Un Bong |
| Zdroj: |
Metals & Materials International; Oct2024, Vol. 30 Issue 10, p2713-2733, 21p |
| Abstrakt: |
This study entails comprehensive analyses of the temperature dependence of tensile properties and strain-controlled low cycle fatigue behavior exhibited by ASTM A302 grade C steel, which is specifically a manganese-molybdenum-nickel alloy. Tensile strength at elevated temperature ranges from 400 to 428 °C closely approximates those measured under ambient conditions, while the ductility properties show a noteworthy increase compared to ambient temperature testing conditions. Cyclic stress responses at elevated temperatures are characterized by two discernible stress cyclic hardening phases. Fatigue lives of the materials tested at 400, and 428 °C reveals a significantly prolonged fatigue life compared to testing under ambient temperature conditions. The transition of fatigue life for specimens tested under ambient temperature conditions is approximately two times shorter than that observed under elevated temperature conditions. The substantial extension of fatigue lives is attributed to the strengthening effect of the peak dynamic strain aging within the test temperature range predominates over the adverse effects of elevated temperature conditions. Drawing from the experimental findings, comprehensive derivations of cyclic stress–strain responses and fatigue properties have been formulated to elucidate the effects of elevated temperature conditions. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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