The crack initiation mechanism of the forged Mg-Zn-Y-Zr alloy in the super-long fatigue life regime
作者： D.K. Xu , L. Liu , Y.B. Xu , E.H. Han
DOI: 10.1016/J.SCRIPTAMAT.2006.09.006
关键词:
摘要: In the super-long fatigue life regime (10(6)-10(9) Cycles), behavior of forged Mg-Zn-Y-Zr Mg alloy with T5 temper was studied. The results showed that a pronounced limit exists in investigated alloy, value about 85 +/- 5 MPa. Fracture observation crack basically, initiated at surface or subsurface. SEM and EDAX analysis indicated initiation site covered layer oxide film. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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