Behaviour of S 355JO steel subjected to uniaxial stress at lowered and elevated temperatures and creep |
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Authors: | Josip Brnic Marko Canadija Goran Turkalj and Domagoj Lanc |
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Affiliation: | (1) Villanova University, Villanova, PA 19085, USA;(2) NGK Metals Corporation, Sweetwater, TN, USA |
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Abstract: | This paper considers main mechanical properties of structural-high strength low alloy (HSLA) S 355JO (ASTM A709 Gr50) steel
subjected to uniaxial tensile tests at lowered and elevated temperatures. The engineering stress vs strain diagrams as well
as curve’s dependence of ultimate and yield strengths vs both lowered and elevated temperatures are presented. The focus is
also on specimen elongations vs temperature at elevated temperatures. Short-time creep tests for selected constant stresses
at selected temperatures were curried out. Uniaxial creep behaviour for selected creep test was modeled by the rheological
model. The creep curve determined by modeling procedure was compared with experimentally obtained one. Also, notch impact
energy test, using Charpy pendulum impact machine was performed and according to the proposed formula, fracture toughness
is calculated. All of experimental tests were performed using modern computer directed experimental systems. |
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