# # Fitted Curve ! # SAE5120 Simulated Core of carburized part. Rc=24, BHN=252 # ElecFurnace, ConCast(175mm) HotRoll to 34mm, Q+T # 25%Bainite, 70%Martensite, 5%Ferrite # Inclusions: TypeABC none, TypeD=3heavy # Test: UoWaterloo, M.Khalil, T.Topper Jan2002 # saedigcurve_v2.2.f starts. #FileType= strain_life #DataType= fitted #Name= SAE5120 #Name= AisiIt_55 #Stress_units= MPa #Strain_units= strain #Sy= 780.0 #Su= 1008.0 #E= 214000 #monotonic_K= 1277.0 #monotonic_n= 0.074 #FractureStrain= 0.87 #FractureStress= 1476 #%RA= 58. #MaterialForm= bar #FailureDef= 50% load drop #BHN= 252 #Hardness, Rockwell C= 24 #Basic Oxygen= False #Electric Furnace= True #Vacuum Degas= False #Ladle Refined= False #Ingot Cast= False #Continuous Cast= True #Martensite, %= 100 #Carbon, %= 0.19 #Manganese, %= 0.79 #Phosphorus, %= 0.013 #Sulfur, %= 0.025 #Silicon, %= 0.17 #Copper, %= 0.18 #Nickel, %= 0.06 #Chromium, %= 0.77 #Molybdenum, %= 0.01 #Vanadium, %= 0.06 #Columbium/Niobium, %= 0.00 #Aluminum, %= 0.010 #Titanium, %= 0.001 #Tin, %= 0.010 #Nitrogen, ppm= 50 # SAE5120 AisiIt_55 BHN= 252 Fn= 0 # Monotonic Props. Cyclic Props. #ELAS. MOD.= 31038. KSI, 214. GPA K' = 175.7 KSI, 1212.MPA #YIELD,0.2%= 113. KSI, 780. MPA N' = 0.0999 #ULT. STRG.= 146. KSI, 1008. MPA F. STRG COEF= 170.8 KSI, 1178.MPA #K = 0.0 KSI, 0. MPA F.STRG EXP, b=-0.0647 #N = 0.0000 FAT DUCT COEF= 0.7520 #RED. IN AREA = 58.0 F.DUCT EXP, c=-0.6471 #T. FRAC. STG.= 214.1 KSI, 1476. MPA Exp Cyc Yld = 94. Ksi, 651.MPA #T. FRAC. STR.= 0.870 Fit Cyc Yld = 94. Ksi, 650.MPA #No. fatigue data points= 18 # # NOTE!! The Following Points are <b>FITTED DATA:</b>#NOTE!! Fitted Stress computed using Experm. K' and n' #Stress_Units= MPa # Total Strain 2Nf Stress Mean Plastic Strain Initial # Amp Amp Stress Amp Elastic Mod. .87 1 1476. 0. .863 214000. #Fitted_point manually 0.01213 1000 747.8 0. 0.00863 214000. #Fitted_point 0.00886 2000 716.3 0. 0.00552 214000. #Fitted_point 0.00621 5000 676.7 0. 0.00305 214000. #Fitted_point 0.00497 10000 648.2 0. 0.00194 214000. #Fitted_point 0.00414 20000 620.7 0. 0.00124 214000. #Fitted_point 0.00342 50000 586.0 0. 0.00068 214000. #Fitted_point 0.00305 100000 560.9 0. 0.00043 214000. #Fitted_point 0.00278 200000 536.6 0. 0.00027 214000. #Fitted_point 0.00251 500000 505.8 0. 0.00015 214000. #Fitted_point 0.00235 1000000 483.5 0. 0.00009 214000. #Fitted_point 0.00222 2000000 462.1 0. 0.00006 214000. #Fitted_point 0.00206 5000000 435.2 0. 0.00003 214000. #Fitted_point 0.00206 10000000 435.2 0. 0.00003 214000. #Fitted_point #