Abstract
The relationship between the fatigue properties and grain size of the commercial 7010 alloy composition in squeeze-cast form has been established and the properties compared to those of rolled plate and gravity-cast 7010 material. The fatigue strength of the squeeze-cast material was found to lie between those of the gravity-cast and the plate material. A decrease in the grain size of the squeeze-cast material considerably improved its fatigue strength. However, the reverse was found to be the case for the fatigue crack propagation resistance. At ΔK values below ∼ 11 MPa m-1/2, fatigue cracks in plate material grew at a lower rate than in the squeeze-cast material and vice versa at higher ΔK values. The effects of some of the microstructural differences on the fatigue behaviours of the squeeze-cast, gravity-cast and plate material are discussed.
Original language | English |
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Pages (from-to) | 175-182 |
Number of pages | 8 |
Journal | Journal of Materials Science |
Volume | 25 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1 Jan 1990 |
Externally published | Yes |
ASJC Scopus subject areas
- General Materials Science
- Mechanics of Materials
- Mechanical Engineering