PROPAGATION OF FATIGUE SHORT CRACKS IN STEEL 16Mn

Acta Metall Sin

1992, Vol. 28

Issue (9): 42-46 DOI:

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PROPAGATION OF FATIGUE SHORT CRACKS IN STEEL 16Mn

WANG Weiming; HUANG Yuhua; XU Hao (Northeast University of Technology; Shenyang)

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WANG Weiming; HUANG Yuhua; XU Hao (Northeast University of Technology; Shenyang). PROPAGATION OF FATIGUE SHORT CRACKS IN STEEL 16Mn. Acta Metall Sin, 1992, 28(9): 42-46.

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Abstract Small bar specimens of steel 16Mn with 4 blind-holes were fatigued under constant amplit■de loading on rotating bending fatigue machine. Short crack propagation emanating from ■e blind-holes was obtained. Based on the experimental results, an expression of average opagation rate of short cracks was proposed. Statistical behaviour of short crack propagatien was also discussed and evoluation of surface sizes of short cracks with fatigue cycle number was given.

Key words: steel 16Mn short crack bending fatigue propagation rate statistical behaviour

Received: 18 September 1992

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