Microstructure of Magnesium alloy AZ91-HP cast in permanent and non-permanent moulds

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedings – Annual report year: 2003Researchpeer-review

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Casting of different geometries were made with AZ91-HP in different moulding media, so that a range of cooling conditions were obtained. Cooling curves were measured and compared to the microstructures found in the castings. It was shown that segregation in the alloy is highly dependent on cooling rate. This leads to precipitation of varying amounts of intermetallic phases. The distribution of phases in the material is controlled both by interdendritic and intergranular segregation, leading to an inhomogeneous microstructure. It is shown that local solidification time, segregation and diffusion in the material interact in a complex manner making segregation and inhomogenity very difficult to avoid.
Original languageEnglish
Title of host publicationCreating a Sustainable Competitive Edge for Magnesium
Place of PublicationHerning
PublisherNormac
Publication date2003
Publication statusPublished - 2003
EventNormac's 2'nd international magnesium Conference & Exhibition - Technical University of Denmark
Duration: 5 Nov 1829 → …

Conference

ConferenceNormac's 2'nd international magnesium Conference & Exhibition
CityTechnical University of Denmark
Period05/11/1829 → …

ID: 2622912