Back to Search
Start Over
Fracture Toughness in an Extruded ZK60 Magnesium Alloy
- Source :
- MATERIALS TRANSACTIONS. 47:995-998
- Publication Year :
- 2006
- Publisher :
- Japan Institute of Metals, 2006.
-
Abstract
- Examination of fracture toughness has been performed a commercial Mg-Zn-Zr alloy, ZK60, with fine strengthening particles. The commercial alloy was extruded at 633 K, and then heat treated at specific conditions. The microstructures were equi-axed grains, and average grain size and precipitate size were 11.6 μm and 50-150 nm, respectively. The yield strength and elongation-to-failure were 225 MPa and 17.0%. The plane-strain fracture toughness, K IC , was estimated to be 20.6 MPam 1/2 in stretched zone analysis. From ductile fracture model, all the finer particles did not affect the void formation. The precipitates having a large diameter, more than 100 nm, were supposed to be the origin of void formation.
Details
- ISSN :
- 13475320 and 13459678
- Volume :
- 47
- Database :
- OpenAIRE
- Journal :
- MATERIALS TRANSACTIONS
- Accession number :
- edsair.doi...........41fb184c47ada4f658c06f4c48b14872
- Full Text :
- https://doi.org/10.2320/matertrans.47.995