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| STUDY ON FATIGUE CRACK GROWTH BEHAVIOR OF HIGH AND LOW-STRENGTH STEELS |
| YANG Zhengrui; MAO Xinwei; LI Fenggang (Shanghai Jiaotong University) (Manuscript received 1 July; 1985; revised manuscript 25 March; 1986) |
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Cite this article:
YANG Zhengrui; MAO Xinwei; LI Fenggang (Shanghai Jiaotong University) (Manuscript received 1 July; 1985; revised manuscript 25 March; 1986). STUDY ON FATIGUE CRACK GROWTH BEHAVIOR OF HIGH AND LOW-STRENGTH STEELS. Acta Metall Sin, 1987, 23(3): 211-216.
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Abstract Characteristics of tong (7mm) and short (0.2-0.4mm) fatigue crack propagation in 5C and 40CrNiMo steels with two stength levels have been studied. The fracture surface roughness and crack closure have been measured. It was found that the fatigue crack growth rate of short crack in low strength 5C steel is anomalously higher at a given stress intensity amplitude, but the threshold △K_(th) is lower. The difference in the growth behavior and threshold △K_(th) between long and short crack reduced with increasing material strength, that may be explained by crack closure effect.
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Received: 18 March 1987
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1 Pearson S, Eng Fract Mech, 1975; 7: 235
2 El Haddad M H, Topper T H, Smith K N. Eng Fract Mech, 1979; 11: 573
3 McCarver J F, Ritchie R O, Mater Sci Eng, 1982; 55: 63
4 Breat J L, Mudry F, Pineau A. Fat Eng Mater Struct, 1983; 6: 349
5 Lankford J, Davidson D L, Chan K S. Metall Trans, 1984; 15A: 1579
6 Ritchie R O. Int Metall Rev, 1979; 24: 205
7 符长璞,伍尚礼,李世维,安运铮,郭涛,理化检验(物理分册),1984;20(5) :57
8 Gan D, Weertman J. Eng Fract Mech, 1981; 15: 87
9 Elber W. ASTM STP 486, 1971; 230
10 Stewart A T. Eng Fract Mech, 1980; 13: 463
11 Ritchie R O. Suresh S. Metall Trans, 1982; 13A: 937& |
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