Effect of equal channel angular pressing on structure, texture, mechanical and in-service properties of a biodegradable magnesium alloy

2019 ◽  
Vol 238 ◽  
pp. 218-221 ◽  
Author(s):  
N. Martynenko ◽  
E. Lukyanova ◽  
V. Serebryany ◽  
D. Prosvirnin ◽  
V. Terentiev ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Equal Channel Angular Pressing ◽  
Service Properties ◽  
Angular Pressing ◽  
Biodegradable Magnesium

scholarly journals Fatigue Properties of AZ31B Magnesium Alloy Processed by Equal-Channel Angular Pressing

Metals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1191
Author(s):  
Ryuichi Yamada ◽  
Shoichiro Yoshihara ◽  
Yasumi Ito
Keyword(s):  
Magnesium Alloy ◽  
Equal Channel Angular Pressing ◽  
Low Cycle Fatigue ◽  
Annealed Sample ◽  
Fatigue Tests ◽  
Fatigue Properties ◽  
Angular Pressing ◽  
Fundamental Research ◽  
Number Of Cycles ◽  
Biodegradable Magnesium

A stent is employed to expand a narrowed tubular organ, such as a blood vessel. However, the persistent presence of a stainless steel stent yields several problems of late thrombosis, restenosis and chronic inflammation reactions. Biodegradable magnesium stents have been introduced to solve these problems. However, magnesium-based alloys suffer from poor ductility and lower than desired fatigue performance. There is still a huge demand for further research on new alloys and stent designs. Then, as fundamental research for this, AZ31 B magnesium alloy has been investigated for the effect of equal-channel angular pressing on the fatigue properties. ECAP was conducted for one pass and eight passes at 300 °C using a die with a channel angle of 90°. An annealed sample and ECAP sample of AZ31 B magnesium alloy were subjected to tensile and fatigue tests. As a result of the tensile test, strength in the ECAP (one pass) sample was higher than in the annealed sample. As a result of the fatigue test, at stress amplitude σa = 100 MPa, the number of cycles to failure was largest in the annealed sample, medium in the ECAP (one pass) sample and lowest in the ECAP (eight passes) sample. It was suggested that the small low cycle fatigue life of the ECAP (eight passes) sample is attributable to severe plastic deformation.

Numerical Simulation of Microstructure Evolution in AZ31 Magnesium Alloy during Equal Channel Angular Pressing

2014 ◽  
Vol 609-610 ◽  
pp. 495-499
Author(s):  
Guo Cheng Ren ◽  
Xiao Juan Lin ◽  
Shu Bo Xu
Keyword(s):  
Finite Element ◽  
Magnesium Alloy ◽  
Equal Channel Angular Pressing ◽  
Microstructure Evolution ◽  
Element Model ◽  
Az31 Magnesium Alloy ◽  
Angular Pressing ◽  
Ecap Process ◽  
Element Simulation ◽  
3D Software

The microstructure and material properties of AZ31 magnesium alloy are very sensitive to process parameters, which directly determine the service properties. To explore and understand the deformation behavior and the optimization of the deformation process, the microstructure evolution during equal channel angular pressing was predicted by using the DEFORM-3D software package at different temperature. To verify the finite element simulation results, the microstructure across the transverse direction of the billet was measured. The results show that the effects strain and deformation temperatures on the microstructure evolution of AZ31 magnesium during ECAP process are significant, and a good agreement between the predicted and experimental results was obtained, which confirmed that the derived dynamic recrystallization mathematical models can be successfully incorporated into the finite element model to predict the microstructure evolution of ECAP process for AZ31 magnesium.

scholarly journals Isothermal Continuous Equal Channel Angular Pressing of Magnesium Alloy AZ31

JOM ◽  
2020 ◽  
Vol 72 (7) ◽  
pp. 2603-2611
Author(s):  
Casey F. Davis ◽  
Adam J. Griebel ◽  
Terry C. Lowe
Keyword(s):  
Magnesium Alloy ◽  
Equal Channel Angular Pressing ◽  
Alloy Az31 ◽  
Magnesium Alloy Az31 ◽  
Angular Pressing

Equal Channel Angular Pressing of Magnesium Alloy Containing Quasicrystal Phase

2006 ◽  
pp. 527-532 ◽  
Author(s):  
Ming Yi Zheng ◽  
Shi Wei Xu ◽  
Xiao Guang Qiao ◽  
Wei Min Gan ◽  
Kun Wu ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Equal Channel Angular Pressing ◽  
Angular Pressing

Room temperature equal-channel angular pressing of a magnesium alloy

2013 ◽  
Vol 61 (8) ◽  
pp. 3027-3036 ◽  
Author(s):  
C.F. Gu ◽  
L.S. Tóth ◽  
D.P. Field ◽  
J.J. Fundenberger ◽  
Y.D. Zhang
Keyword(s):  
Magnesium Alloy ◽  
Equal Channel Angular Pressing ◽  
Room Temperature ◽  
Angular Pressing
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