IMPROVEMENT ON FATIGUE LIFE OF ALLOY LY12CZ AFTER LASER RADIATION AND ITS DAMAGE EVOLUTION

Acta Metallurgica Sinica (English Letters) ›› 1989, Vol. 2 ›› Issue (6): 428-432.

• Research paper • Previous Articles Next Articles

IMPROVEMENT ON FATIGUE LIFE OF ALLOY LY12CZ AFTER LASER RADIATION AND ITS DAMAGE EVOLUTION

Received:1989-12-25 Revised:1989-12-25 Online:1989-12-25 Published:2009-10-10

Abstract

Abstract: The change of microstructure of fatigue specimens before and after laser radiation was studied by transmission electron microscopy.The results show that the diameter of dislocation cell λ tends to a constant at fatigue failure.Based on the principles of continuous damage mechanics,expressions of the fatigue damage criterion and processes of fatigue damage evolu- tion for L Y12CZ have been derived.

Key words: laser radiation, dislocation cell, fatigue, damage mechanics

ZO U Hongcheng DAI Shujuan QIAN Zhixiong LI Guangxia Huazhong University of Science and Technology,Wuhan,China [Originally published in ACTA METALL SIN(CHINESE EDN)25(3)1989 pp A207—A212, Associate Professor,Division of Materials,Huazhong University of Science and Technology,Wuhan,China. IMPROVEMENT ON FATIGUE LIFE OF ALLOY LY12CZ AFTER LASER RADIATION AND ITS DAMAGE EVOLUTION[J]. Acta Metallurgica Sinica (English Letters), 1989, 2(6): 428-432.

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IMPROVEMENT ON FATIGUE LIFE OF ALLOY LY12CZ AFTER LASER RADIATION AND ITS DAMAGE EVOLUTION

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