喷丸对激光辅助成形铝合金样件拉-拉疲劳性能的影响

doi:CNKI:11-1929/V.20110426.1111.002

Abstract

Abstract: In order to study the fatigue properties of laser aided forming samples and realize the effects of shot peening treatment on these samples, with aluminum alloy plate 2024 as the test object, the microstructure, microhardness, residual stress and tension-tension fatigue properties of as-machined aluminum samples, samples of laser aided forming and shot peened samples are studied. The results show that the microstructures of laser aided forming samples are not varied obviously, but their microhardness and extensive residual stress decrease, while after shot peening the surface microstructures of the laser aided forming samples become varied, their microhardness is raised and their fatigue properties are greatly improved. The tension-tension fatigue lives of shot peened samples are not only higher than the laser aided forming samples, but also higher than the as-machined aluminum samples.

Key words: aluminum alloy, fatigue, laser, shot peening, microstructure, residual stress

CLC Number:

V261
TG146.2

WANG Mingxing, CHEN Guangnan, PENG Qing. Influence of Shot Peening on Tension-Tension Fatigue Property of Laser Aided Forming Aluminum Alloy Samples[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2011, 32(7): 1351-1356.

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Influence of Shot Peening on Tension-Tension Fatigue Property of Laser Aided Forming Aluminum Alloy Samples

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