Page 303 - Biaxial Multiaxial Fatigue and Fracture

The Background ofFatigue Limit Ratio of Torsional Fatigue to Rotating Bending Fatigue in ... 287

Table 1. Fatigue limit ratio between bending and torsional fatigue
- - -
!e& * perti
- - -
mil
'atigu
- - -
- Reference
Material Heat treatment - LS - - - LI
0,
0s
0%
OB
.x
n_
0.58
45.1
521
239 138
Carbon steel Annealed - - - - - -
Vishihard,T.(l)
Carbon steel Annealed L228 376 72.9 72.9 Hd03 265 I47 0.56
Normalized w53 705 32.7 32.7 194 294 196 0.67
NiCr steel Nothing U482 704 59.2 59.2 237 392 255 0.65 Uishihard,T.(Z)
I ?hemal refined US79 962 44.9 44.9 295 530 304 0.57
Cast iron Nothing 216 205 127 103 0.81
-
- - - - -
409
70/30 brdss Nothing 9 70.4 70.4 122 131 54 0 41
Carbon steel Normalized iJ252 424 178 70.0 Hd27 264 149 0.56
c 356 638 255 58.2 195 327 204 0.62
Spberoidized 283 470 178 67.0 144 271 154 0.57
Normalized 834 18.0 248 347 237 0.68
Ni steel 850'coil que., 7OC'Cair cooled 518 72.5 165 337 202 0.6
850"cail que., 610"Cair cooled 578 711 422 67.5 237 438 263 0.6
CrVa steel 85O"coil que., 700'Cair cooled 670 740 468 66.0 229 423 254 0.6
NiCr steel 83Ilcoil que., 6tl'Cwaler coalcd 748 882 574 65.0 282 532 347 0.65
,, 830"coil que., two step coaled 743 883 60.5 278 502 319 0.W
NiCrMo steel 850"coil que., 600"cair cooled 1224 898 60.0 394 65 1 337 0.52
NiCr steel 820'c and 2OO"Cair cooled 1642 52.0 479 798 445 0.56
Silal cast iron Nothing 226 0 322 237 216 0.91
- -
216
0.84
1.3
Nicrosolal 0 Nothing - - - 182 249 -
CrMo steel 9009)oil que.. 580"coil que. 844 939 68.0 501 302 0.6
NiCrMo steel 830"coiI que., 575'Coil que. 949 1087 61 .O 581 327 0.56
CrMoVa steel 9ooCoil que., 600'Coil que. 1376 54.0 658 384 0.58
-
I - - E -
-
NiCr steel 830'Coil que., UH)'Cair cooled 970 1368 64.0 657 0.55
- - - - 462 286 -
NiCrMo steel 845"coil que., 677"cmled E 776 452 Hnc25 0.62 %ndIey,W.N.(7)
70i30 brass Annealed 113 320 73.1 83.4 73.5 0.88
WT8OC Wermal refined 761 809 66.4 461 275 0.6 Hatake,T.@)
240 - - -
477
Nodular cast iron Nothing - 10.6 196 186 0.95
- - I
CrMo steel 850"cque.. 600'Ctempering U923 1041 61.3 Hv331 589 368 0.62
I, 850rque., 450'C tempering 1243 1373 51.1 434 699 397 0.57
850Cque., 300'Ctempering 1500 1756 41.8 535 79 1 456 0.58
-
0.65
63.9
351
539
314
883
974
NiCrMo steel 85O"coil que., 630ctempering - - - - - - -
Carbon steel 845Cwater que., 6ulJ'Ctempering u564 748 68.0 Hv245 415 284 0.69
n 82S'Cwater que.. eWtempering 700 860 58.0 283 458 318 0.69
Cr steel X55rail que., 5SOCwater mled 935 1051 61.0 328 582 401 0.69 NRIM fatigue
I, 855"Coil qw., 64Ml'Cwaler molcd 838 969 62.0 299 522 358 0.69 jata sheet
CrMo steel IjS'Coil que., 55tl'Cwaler -led 1046 1118 59.0 362 586 405 0.69 (12)
n 1081 1139 62.0 372 610 416 0.68
-
60.0
382
0.7
549
983
339
975
Xj59)oil que., MMlCwater cooled - - - - - - -
Carbon steel Annealed 324 570 1170 51.3 235 140 0.59
Nodular cast iron Nothing 343 596 3.7 206 186 0.9
131 - -
250
309
AI-alloy Age-hardened - - - - - 65 0.5
48.0
479
@ : Reduction of area (%), HB,Hv,HR : Hardness, Ow, T : Fatigue limit (MPa)