Corrosion fatigue of austempered ductile iron

Chih Kuang Lin, Chang Hao Yang, Jeng Ho Wang

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Corrosion fatigue (CF) behavior has been investigated for an austempered ductile iron (ADI) by conducting systematic fatigue tests at 20 Hz, including both high-cycle fatigue (HC, S-N curves) and fatigue crack growth (FCG, da/dN-ΔK curves), in air, lubrication oil and several aqueous environments. Results showed the HCF resistance of ADI was dramatically reduced by the given aqueous media, in particular, to a greater extent with a decrease in pH value. However, the given room-temperature aqueous solutions did not exert significantly detrimental effects on the Stage II crack growth compared with an atmospheric environment but an increase in solution temperature caused enhanced Stage II crack growth. Among the given variables of the bulk environment, pH had the greatest influence on HCF response while temperature had the most influence on the FCG of long cracks. In addition, SAE 10W40 lubrication oil provided an inert environment to remove the corrosive effect and enhance the CF resistance of ADI. The overall comparisons indicated the environmental effects would generate more influence on Stage I cracking than on Stage II cracking for the given ADI.

Original languageEnglish
Pages (from-to)1667-1672
Number of pages6
JournalJournal of Materials Science
Volume38
Issue number8
DOIs
StatePublished - 15 Apr 2003

Fingerprint

Dive into the research topics of 'Corrosion fatigue of austempered ductile iron'. Together they form a unique fingerprint.

Cite this