#
# # Fitted file ! # SAE4320 Quenched + Tempered to simulate Core of a carburized part # Rb=94, BHN=188 85%Martensite, 10%Bainite, 5%Ferrite # ElecFrun., ConCast(279x375), HotRolled to 63.5mm bar # Inclusions TypeA,B,C, none, TypeD=1 # Test: UoWaterloo M.Khalil, T.Topper March 2002 # saedigcurve_v2.2.f starts. #FileType= strain_life #DataType= fitted #Name= SAE4320 #Name= AisiIt_49 #Stress_units= MPa #Strain_units= strain #Sy= 920.0 #Su= 994.0 #E= 202000 #monotonic_K= 1127.0 #monotonic_n= 0.031 #FractureStrain= 0.99 #FractureStress= 1336. #%RA= 63. #MaterialForm= bar #FailureDef= 50% load drop #BHN= 188 #Hardness, Rockwell B= 94 Rc=28-35 #StrAmp 2Nf StsAmp So CalcPlasStr InitialModulus #Basic Oxygen= False #Electric Furnace= True #Vacuum Degas= False #Ladle Refined= False #Ingot Cast= False #Continuous Cast= True #Martensite, %= 100 #Carbon, %= 0.18 #Manganese, %= 0.48 #Phosphorus, %= 0.006 #Sulfur, %= 0.02 #Silicon, %= 0.26 #Copper, %= 0.17 #Nickel, %= 1.74 #Chromium, %= 0.58 #Molybdenum, %= 0.17 #Vanadium, %= 0.00 # SAE4320 AisiIt_49 BHN= 188 Fn= 0 # Monotonic Props. Cyclic Props. #ELAS. MOD.= 29298. KSI, 202. GPA K' = 120.6 KSI, 832.MPA #YIELD,0.2%= 133. KSI, 920. MPA N' = 0.0378 #ULT. STRG.= 144. KSI, 994. MPA F. STRG COEF= 119.4 KSI, 823.MPA #K = 0.0 KSI, 0. MPA F.STRG EXP, b=-0.0238 #N = 0.0000 FAT DUCT COEF= 0.7560 #RED. IN AREA = 63.0 F.DUCT EXP, c=-0.6294 #T. FRAC. STG.= 193.8 KSI, 1336. MPA Exp Cyc Yld = 95. Ksi, 657.MPA #T. FRAC. STR.= ***** Fit Cyc Yld = 95. Ksi, 658.MPA #No. fatigue data points= 18 # # NOTE!! The Following Points are FITTED DATA:#NOTE!! Fitted Stress computed using Experm. K' and n' # NOTE!! Fitted short life region and Fatigue limit manually. FAC July09 #Stress_Units= MPa # Total Strain 2Nf Stress Mean Plastic Strain Initial # Amp Amp Stress Amp Elastic Mod. .99 1 1336. 0. .983 202000. #Fitted_point manually 0.00972 2000 680.7 0. 0.00635 202000. #Fitted_point 0.00688 5000 669.4 0. 0.00356 202000. #Fitted_point 0.00557 10000 660.8 0. 0.00230 202000. #Fitted_point 0.00470 20000 652.3 0. 0.00147 202000. #Fitted_point 0.00398 50000 641.0 0. 0.00081 202000. #Fitted_point 0.00364 100000 632.3 0. 0.00051 202000. #Fitted_point 0.00339 200000 623.3 0. 0.00031 202000. #Fitted_point 0.00318 500000 610.7 0. 0.00015 202000. #Fitted_point 0.00306 700000 600. 0. 0.00009 202000. #Fitted_point manually 0.00281 1000000 550. 0. 0.00001 202000. #Fitted_point manually 0.00281 10000000 550. 0. 0.00001 202000. #Fitted_point manually # #