Flow Stress Mtcrostructures and Modeling in Hot Extrusion of Magnesium Alloys

2013 ◽  
pp. 355-362 ◽  
Author(s):  
H.J. McQueen ◽  
M. Myshlaev ◽  
M. Sauerborn ◽  
A. Mwembela
Keyword(s):  
Flow Stress ◽  
Magnesium Alloys ◽  
Hot Extrusion

scholarly journals Hot Extrusion of Hollow Helical Tubes of Magnesium Alloys

2014 ◽  
Vol 81 ◽  
pp. 2249-2254 ◽  
Author(s):  
Yeong-Maw Hwang ◽  
Cheng-Nan Chang
Keyword(s):  
Magnesium Alloys ◽  
Hot Extrusion ◽  
Helical Tubes

Validation and generalisation of hybrid models for flow stress and recrystallisation behaviour of aluminium–magnesium alloys

2005 ◽  
Vol 395 (1-2) ◽  
pp. 35-46 ◽  
Author(s):  
M.F. Abbod ◽  
C.M. Sellars ◽  
D.A. Linkens ◽  
Q. Zhu ◽  
M. Mahfouf
Keyword(s):  
Flow Stress ◽  
Magnesium Alloys ◽  
Hybrid Models

Mechanical Properties and Microstructures of Mg-Al-Zn Alloys with High Aluminum Contents

2009 ◽  
Vol 610-613 ◽  
pp. 801-805
Author(s):  
Xing Gang Li ◽  
Kui Zhang ◽  
Yong Jun Li ◽  
Xin Zhao ◽  
Xu Jun Mi
Keyword(s):  
Mechanical Properties ◽  
Magnesium Alloys ◽  
Annealing Treatment ◽  
Hot Extrusion ◽  
Hardness Measurement ◽  
Eutectic Phase ◽  
Magnesium Matrix ◽  
Homogenization Treatment ◽  
Zn Alloys ◽  
High Aluminum

The effect of Al contents on the properties and structures of AZ80, AZ91，AZ131 and AZ151 magnesium alloys has been studied. The experiments of homogenization treatment, hot extrusion, and annealing treatment are carried out in order to study the effects of these processes to the properties and structure of AZ80, AZ91, AZ131 and AZ151 magnesium alloys. The parameters of homogenization treatment (420°C×24h, 420°C×36h) determined by DSC and metallurgical photo are sufficient which ensure the eutectic phase melt into magnesium matrix greatly. The strength of extruded bars shortly after homogenization treatment increase (Rp0.2 from 232 to 310MPa), but elongation decrease (A from 12 to 2.5%) with Al contents. The differences and causes of structure and mechanical properties of extruded bar after the process of aging are analyzed in detail by tensile experiments, hardness measurement, and optical observation.

Microstructural Evolution and Mechanical Properties of AZ91 and SiCp/AZ91 Magnesium Alloys upon Rapid Solidification/Powder Metallurgy Followed by Hot Extrusion

2010 ◽  
Vol 146-147 ◽  
pp. 734-737
Author(s):  
Hui Yu ◽  
Hua Shun Yu ◽  
Zhen Ya Zhang ◽  
Guang Hui Min ◽  
Cheng Chen
Keyword(s):  
Mechanical Properties ◽  
Powder Metallurgy ◽  
Magnesium Alloys ◽  
Rapid Solidification ◽  
Microstructural Evolution ◽  
Hot Extrusion ◽  
Interface Debonding ◽  
Porosity Level ◽  
Az91 Magnesium ◽  
Sic Particulates

In this study, AZ91 and SiC particulates reinforced AZ91 (SiCp/AZ91) magnesium alloys were successfully fabricated using rapid solidification/powder metallurgy technique followed by hot extrusion. Microstructural evolution and mechanical properties of the monolithic AZ91 and SiCp/AZ91 magnesium alloys were evaluated. SiC particulates were well distributed with only few agglomerated particles. The porosity level and microhardness increased as SiCp content increased because the increased surface area of SiCp, harder ceramic phases and SiCp acted obstacles to the motion of dislocations. In addition, an increase in particulate reinforcement content was observed to decrease mechanical properties of the composite compared with the unreinforced counterpart due to increasing agglomerating regions and porosity, brittle interface debonding between matrix and SiCp.

scholarly journals Microstructure and Plastic Properties of Mg-Li Alloys Smelted in Vacuum Induction Furnaces after Hot Working

2017 ◽  
Vol 62 (3) ◽  
pp. 1427-1432 ◽  
Author(s):  
E. Hadasik ◽  
D. Kuc ◽  
T. Mikuszewski ◽  
I. Schindler
Keyword(s):  
Magnesium Alloys ◽  
Hot Extrusion ◽  
Lithium Content ◽  
Plastic Working ◽  
Hollomon Parameter ◽  
Plastic Properties ◽  
Hot Plastic Deformation ◽  
Influence Of Temperature ◽  
Influence Of Temperature On ◽  
Plastic Forming

AbstractThe paper analyses the characteristics of plasticity and microstructure of magnesium alloys with lithium meant for hot plastic working with different lithium content. The alloys were prepared in conditions of vacuum smelting. Achieved ingots were subject to hot extrusion. Tests on Gleeble simulator were conducted to assess the susceptibility of tested alloys to plastic forming in conditions of hot plastic working. For tested alloy the activation energy was marked for hot plastic deformation and plasticity characteristics in function of Zener-Hollomon parameter. After the analysis of the influence of temperature on the deformability of tested alloys it was stated that the alloy containing 8%Li (LAZ831) has better susceptibility to plastic treatment than alloy containing 4%Li (LAZ431), but higher than in case of classic magnesium alloys - AZ31.

Sign in / Sign up

Export Citation Format

Share Document