Smooth and notched fatigue performance of aging treated and shot peened ZK60 magnesium alloy

Wen Cai Liu, Jie Dong, Ping Zhang, Xing Wei Zheng, Wen Jiang Ding, De Hui Li, Alexander M. Korsunsky

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The influence of shot peening (SP) on high cycle fatigue (HCF) performance of smooth and notched specimens of hot-extruded ZK60 magnesium alloy was investigated and compared to that of hot-extruded and T5 aging-treated ZK60 magnesium alloy referred to as ZK60-T5. The increases in fatigue properties at the optimum Almen intensities were found to depend on the material states. In contrast to ZK60 alloy, higher smooth and notched fatigue properties for both unpeened and peened specimens were observed for ZK60-T5 alloy. Meanwhile, the improvement of fatigue life for notched specimen by SP was much more than that for the smooth specimen. The mechanism by which the compressive residual stress induced by SP resulted in the improvement of fatigue performance of smooth and notched specimens for ZK60 and ZK60-T5 alloys was discussed.

Original languageEnglish
Pages (from-to)1375-1387
Number of pages13
JournalJournal of Materials Research
Volume25
Issue number7
DOIs
Publication statusPublished - Jul 2010
Externally publishedYes

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