- Tytuł:
- Dependence of Room Temperature Tensile Properties on Volume Fraction of Discontinuous Precipitates in Cast AZ91 Magnesium Alloy
- Autorzy:
- Jun, Joong-Hwan
- Powiązania:
- https://bibliotekanauki.pl/articles/351338.pdf
- Data publikacji:
- 2019
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
discontinuous precipitates
microstructure
AZ91 alloy
aging
tensile properties - Opis:
- The objective of this study was to investigate the dependence of the room temperature tensile properties on the volume fraction of discontinuous precipitates (DPs) in a cast AZ91 magnesium alloy. In order to obtain various volume fractions of DPs, the solution-treated alloy was aged at 428 K for up to 48 h. The volume fraction of DPs increased from 0% to 72% with an increase in the aging time up to 24 h; for aging times longer than 24 h, discontinuous precipitation was substantially inhibited owing to the occurrence of significant continuous precipitation within the α-(Mg) grains. YS and UTS of the alloy increased with the volume fraction of DPs, whereas the elongation showed a reverse trend. A relatively rapid change in the tensile properties with increasing volume fraction of DPs up to ~40% was noted, which would be due to the reduction of the effective α grain size in response to the formation of DPs along the grain boundaries.
- Źródło:
-
Archives of Metallurgy and Materials; 2019, 64, 3; 1183-1186
1733-3490 - Pojawia się w:
- Archives of Metallurgy and Materials
- Dostawca treści:
- Biblioteka Nauki
Artykuł