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
AB During creep, magnesium alloys undergo microstructural changes due to temperature andstress. These alterations are associated with the evolution of the present phases at a microstructurallevel, creating different strain rates during primary and tertiary creep, and with the stability ofthe inter-metallic phase Mg17Al12 formed at these temperatures. In this paper, the results of creeptesting of high-pressure die-cast AZ91 magnesium alloys are reported. During creep, continuous anddiscontinuous precipitates grow, which influences creep resistance. The creep mechanism that acts atthese intermediate temperatures up to 150 ◦C is termed dislocation climbing. Finally, the influence ofthe type of precipitates on the creep behavior of alloys is determined by promoting the formation ofcontinuous precipitates by a short heat treatment prior to creep testing.
PB MDPI
YR 2019
FD 2019-03
LK http://hdl.handle.net/10259/8297
UL http://hdl.handle.net/10259/8297
LA eng
DS Repositorio Institucional de la Universidad de Burgos
RD 24-dic-2024