首页 金属材料的疲劳极限 不同终加工方法试样p-S-N曲线的ap或bp值

不同终加工方法试样p-S-N曲线的ap或bp值

材料 热处理 σb/MPa 终加工 不同存活率P下的ap或bp
方法 p/% 50 90 95 99 99.9
Q235A 轧态 463 抛光 ap 25.3502 23.6317 23.1451 22.2322 21.2081
bp -7.9651 -7.3153 -7.1313 -6.7862 -6.3989
磨光 ap 24.0398 20.541 19.5503 17.6917 15.6066
bp -7.4449 -6.0926 -5.7097 -4.9913 -4.1854
精车 ap 27.2788 20.6063 18.7169 15.1724 11.196
bp -8.9187 -6.3051 -5.565 -4.1767 -2.6191
粗车 ap 30.1992 31.1552 31.4259 31.9336 32.5033
bp -10.1702 -10.6338 -10.765 -11.0113 -11.2875
锻造 ap 24.9788 23.2997 22.8243 21.9323 20.9317
bp -8.1255 -7.5348 -7.3675 -7.0537 -6.7016
Q345 轧态 562 锻造 ap 20.656 22.001 22.382 23.096 23.898
bp -6.277 -6.967 -7.163 -7.529 -7.94
粗车 ap 36.02 28.8756 27.3733 25.1192 26.1219
bp -12.5577 -9.7788 -9.2019 -8.3365 -8.8077
精车 ap 44.11 21.433
bp -15.54 -6.536
35 正火 584 粗车 ap 43.79 38.825
bp -15.489 -13.578
精车 ap 45.359 38.432 36.472 32.792
bp -16.018 -13.321 -12.558 -11.125
磨光 ap 53.932
bp -19.347
抛光 ap 58.518 54.631 56.501 64.215 75.422
bp -21.168 19.826 -20.643 -23.787 -28.348
45 正火 612 粗车 ap 46.6756 41.4103 41.2942 41.2495 41.4711
bp -16.7818 -14.7091 -14.6727 -14.6727 -14.7818
精车 ap 48.059 46.564 47.32 49.182 51.452
bp -17.121 -16.593 -16.991 -17.684 -18.623
磨光 ap 58.829 48.3036 46.7396 46.4238 48.2885
bp -21.4389 -17.3354 -16.7371 -16.6569 -17.4501
抛光 ap 65.7472 49.6993 46.9868 45.438 47.0001
bp -23.9206 -17.6587 -16.6084 -16.0348 -16.6934
45 调质 783 抛光 ap 40.6817 38.6145 38.0291 36.931 35.6991
bp -13.2884 -12.6024 -12.4082 -12.0438 -11.6351
磨光 ap 41.0124 34.2656 32.3553 28.7714 24.7507
bp -13.4212 -10.9926 -10.3049 -9.0148 -7.5675
精车 ap 31.5692 28.2384 27.2953 25.5259 23.541
bp -9.9521 -8.8232 -8.5036 -7.903 -7.2312
粗车 ap 31.5009 35.031 36.0306 37.9058 40.0095
bp -10.0404 -11.4305 -11.8241 -12.5626 -13.391
锻造 ap 16.4848 14.8641 14.4052 13.5442 12.5784
bp -4.5246 -3.9439 -3.7795 -3.4711 -3.1251
40CrNiMo 调质 940 抛光 ap 32.0953 33.4544 33.8393 34.5613 35.3713
bp -9.8521 -10.3973 -10.5517 -10.8413 -11.1662
磨光 ap 30.3863 28.781 28.3286 27.4754 26.5185
bp -9.1848 -8.6468 -8.4952 -8.2091 -7.8884
精车 ap 31.5114 29.484 28.9099 27.8328 26.6246
bp -9.6649 -8.9634 -8.7647 -8.3921 -7.974
粗车 ap 30.9637 35.4967 36.7802 39.1879 41.8893
bp -9.5743 -11.3151 -11.808 -12.7326 -13.77
锻造 ap 20.9349 18.2883 17.5389 16.133 14.5557
bp -6.0572 -5.0991 -4.8278 -4.3189 -3.7479
40Cr 调质 858 锻造 ap 15.3077 15.1689
bp -3.988 -3.957
粗车 ap 26.805 29.72 32.992
bp -8.287 -9.456 -10.768
磨光 ap 35.927 39.079 45.665
bp -11.374 -12.575 -15.068
60Si2Mn 淬火后中温回火 1370 锻造 ap 15.318 15.428 15.654
bp -3.781 -3.992 -4.095
粗车 ap 19.872
bp -5.386
精车 ap 26.999 25.219 24.965 24.894 25.255
bp -7.816 -7.278 -7.211 -7.224 -7.39
磨光 ap 31.786 16.523
bp -9.295 -4.056
抛光 ap 35.592 28.11 26.556 24.992
bp -10.687 -8.145 -7.62 -7.101

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