On The Fatigue Short Crack Behaviors of Directionally Solidified Superalloy DZ4 by In Situ SEM Observations

Abstract:

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Small fatigue crack behaviors in a nickel-based directionally solidified superalloy DZ4 were studied by in situ scanning electron microscopy. The crack initiation and propagation manners were identified under different temperatures, i.e. 25oC, 350oC, 700oC. Crack growth showed to be associated with the configuration and relative direction of carbide. The anomalous short crack growth was pronounced at 25oC, 350oC and not evident at 700oC, which was analyzed by in situ examining the effect of microstructure.

Info:

Periodical:

Advanced Materials Research (Volumes 118-120)

Edited by:

L.Y. Xie, M.N. James, Y.X. Zhao and W.X. Qian

Pages:

289-293

DOI:

10.4028/www.scientific.net/AMR.118-120.289

Citation:

X. F. Ma and H. J. Shi, "On The Fatigue Short Crack Behaviors of Directionally Solidified Superalloy DZ4 by In Situ SEM Observations", Advanced Materials Research, Vols. 118-120, pp. 289-293, 2010

Online since:

June 2010

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Price:

$35.00

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