TY - JOUR ID - TI - Effect of Prior Corrosion on Fatigue Life of Steel Alloy CK35 Under Constant Loading تأثير التأكل المسبق على عمر الكلال لسبيكة الصلب CK35 تحت حمل ثابت AU - Alalkawi H.J.M AU - Abdul-Jabar H. Ali AU - Saisaban A. Fahad PY - 2015 VL - 33 IS - 5 Part (A) Engineering SP - 1247 EP - 1254 JO - Engineering and Technology Journal مجلة الهندسة والتكنولوجيا SN - 16816900 24120758 AB - Corrosion is a term defined as oxidation of a metal, which is observed in many parts. A structure is subjected to fatigue loading when a certain load is applied repeatedly. If this structure which was subjected to prior corrosion, under fatigue load, it reaches destruction far faster than that subjected in an inert environment. The aim of this work is to study the effect of the prior corrosion on fatigue behavior of steel alloy CK35 under constant amplitude stress. The NaCl solution used in this investigation is a 3.5wt% mass mixture of sodium chloride (NaCl) salt and distilled water corresponding approximately to the composition of sea water. The samples are immersed in the solutions for 80 days on the solution that replaces every eight days to maintain the concentration of the solution. The results observe that the fatigue lifedecreases in different percentage at different constant stress amplitudeloading.Thehighest decreasing life factor isin range (9-29.3%) at amplitude stress in range (77- 62% ofσ_y) while the decreasing life factor is in range (68.7-40.2%) at amplitude stressin range (46-31% ofσ_y). Also the experimental results show that prior corrosion for 80 days reduce the fatigue limit of steel alloy CK35 for 13.229%.

ER -