The fretting wear of aluminum alloy is a very complicated process, and it involves four subprocesses adherence、rubbing、oxidation、surface fatigue. In those subprocesses surface takes up a dominant status, and the effect of oxidation should not be neglected. The fretting fatigue cracks of aluminum appear on the common boundary of slide and none slide, because on that boundary there is the highest stress which makes microcracks initiating and expanding. The pit produced by fretting wear strengthens stress concentration and makes microcracks changing into expandable fretting fatigue crack.
Key words
aluminum alloy /
fretting /
fretting wear /
fretting fatigue
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References
NIX K J, LINDLY T C. The role of fretting in the initiation and early growth of defects in an aluminium alloy[M].In:Crack Initiation under Complex Loading. Paris:So Francaise De Met,1984.233-246.
ZHOU Z R, FAYEULLE S,VINCENT L.Cracking behavior of various aluminium during fretting wear[J]. Wear,1992,155:317-330.
SAEED A, DAVID W, HOEPPNEER.Study of fretting fatigue crack nucleation in 7075-T6 aluminium alloy [J].Wear,1992,159:257-264.
何明鉴. 机械构件的微动疲劳[M].北京:国防工业出版社,1994.
OCONNER J J. The role of elastic stress analysis in the interpretation of fretting fatigue failures, fretting fatigue[M].WATERHOUSE R B, ed.London: Appl.Sci.Publ. Ltd,1981.23-66.
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