RT info:eu-repo/semantics/article
T1 Strain Rate during Creep in High-Pressure Die-Cast AZ91 Magnesium Alloys at Intermediate Temperatures
A1 Preciado Calzada, Mónica
A1 Bravo Díez, Pedro Miguel
A1 Calaf Chica, José
A1 Ballorca Juez, Daniel
K1 AZ91
K1 Magnesium alloys
K1 Creep
K1 High pressure die casting
K1 Ingeniería civil
K1 Civil engineering
K1 Resistencia de materiales
K1 Strength of materials
K1 Ensayos (Tecnología)
K1 Testing
AB During creep, magnesium alloys undergo microstructural changes due to temperature and stress. These alterations are associated with the evolution of the present phases at a microstructural level, creating different strain rates during primary and tertiary creep, and with the stability of the inter-metallic phase Mg17Al12 formed at these temperatures. In this paper, the results of creep testing of high-pressure die-cast AZ91 magnesium alloys are reported. During creep, continuous and discontinuous precipitates grow, which influences creep resistance. The creep mechanism that acts at these intermediate temperatures up to 150 °C is termed dislocation climbing. Finally, the influence of the type of precipitates on the creep behavior of alloys is determined by promoting the formation of continuous precipitates by a short heat treatment prior to creep testing.
PB MDPI
SN 1996-1944
YR 2019
FD 2019
LK http://hdl.handle.net/10259/8374
UL http://hdl.handle.net/10259/8374
LA eng
DS Repositorio Institucional de la Universidad de Burgos
RD 10-may-2024