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.

Mechanical Properties and Microstructure of AM140 Magnesium Alloy

2009 ◽  
Vol 610-613 ◽  
pp. 822-825
Author(s):  
Yong Jun Li ◽  
Kui Zhang ◽  
Xing Gang Li ◽  
Xin Zhao ◽  
Xu Jun Mi
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Magnesium Alloy ◽  
Annealing Treatment ◽  
Hot Extrusion ◽  
Eutectic Phase ◽  
Optical Observation ◽  
Magnesium Matrix ◽  
Homogenization Treatment

The homogenization treatment, hot extrusion, and annealing treatment are carried out to study the effects of these processes on the mechanical properties and structure of AM140 magnesium alloy. The parameter of homogenization treatment (420°C× 24h) determined by DSC and metallurgical photo is sufficient which ensures the eutectic phase melt into magnesium matrix greatly. The Rm, Rp0.2 and A of billets after hot extrusion are 355MPa, 305MPa and 3.5% respectively. The variation of structure and mechanical properties during the process of aging is also studied by optical observation and tensile strength .

Effect of Hot Extrusion, Hard Drawing and Heat Treatment on Properties and Structure of MB5B Wrought Mg Alloy

2007 ◽  
Vol 546-549 ◽  
pp. 403-407
Author(s):  
Xing Gang Li ◽  
Kui Zhang ◽  
Yong Jun Li ◽  
Xu Jun Mi ◽  
Bai Qing Xiong ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Tensile Strength ◽  
Annealing Treatment ◽  
Hot Extrusion ◽  
Eutectic Phase ◽  
Heating Process ◽  
Magnesium Matrix ◽  
Homogenization Treatment ◽  
Wrought Magnesium Alloy ◽  
Reduction In Area

The experiments of hot extrusion, hard drawing and annealing treatment were carried out in this paper in order to study the effects of these processes to the mechanical properties and structure of MB5B wrought magnesium alloy. The experimental results showed that, the eutectic phase was to melt into magnesium matrix greatly during the heating process and precipitated from matrix with point-like state in transverse section after extrusion. The tensile strength and elongation of billets after above mentioned treatment were equal to those after homogenization treatment. The as-received billets are then drawn continuously under the circumstance that the percent reduction in area(ψ) of each pass was no more than 15% and the total reduction in area was no more than 50%. As the results the tensile strength increased and elongation decreased sharply at the same time. The grains and eutectic phase of alloy after drawing were prolonged significantly. The subsequent heat treatment had little effects on the properties of the hard drawn bar.

scholarly journals Enhancing Mechanical Response of Monolithic Magnesium Using Nano-NiTi (Nitinol) Particles

Metals ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 1014 ◽  
Author(s):  
Gururaj Parande ◽  
Vyasaraj Manakari ◽  
Saif Wakeel ◽  
Milli Kujur ◽  
Manoj Gupta
Keyword(s):  
Mechanical Properties ◽  
Mechanical Response ◽  
Hot Extrusion ◽  
Nickel Titanium ◽  
Structure Property ◽  
Microstructural Characteristics ◽  
Magnesium Matrix ◽  
Melt Deposition ◽  
Synthesized Materials ◽  
Minimal Adverse Effect

The present study focuses on investigating the effects of Nickel-Titanium (NiTi) nanoparticles on the microstructure and properties of pure Mg. Mg composites containing varying weight percentages (0.5, 1, 1.5, 3) of NiTi nanoparticles were fabricated using Disintegrated Melt Deposition (DMD), followed by hot extrusion. The synthesized materials were characterized in order to investigate their physical, microstructural and mechanical properties. Synthesized materials were characterized for their density and porosity levels, microstructural characteristics, and mechanical response. Superior grain refinement was realized by the presence of NiTi nanoparticles in the magnesium matrix. The addition of NiTi nanoparticles resulted in strength property enhancements of pure Mg with minimal adverse effect on the ductility. Structure-property evaluations are detailed in the current study.

Effect of Ce and Homogeneous Annealing on Microstructure and Deformation Performance of ZM21 Alloy

2015 ◽  
Vol 816 ◽  
pp. 476-480
Author(s):  
Quan Li ◽  
Wei Bo Zhu ◽  
Si Ya Wang ◽  
Xian Quan Jiang ◽  
Fu Sheng Pan
Keyword(s):  
Mechanical Properties ◽  
Magnesium Alloy ◽  
Magnesium Alloys ◽  
Annealing Treatment ◽  
Solidification Temperature ◽  
Fracture Feature ◽  
Homogenizing Annealing ◽  
Microstructure And Mechanical Properties ◽  
Mixed Fracture ◽  
Deformation Tests

The rare earth element Ce was added in Mg-2.0Zn-1.0Mn magnesium alloys. And the homogenizing treatment and the extrusion deformation tests for the alloy were carried out. The effects of the Ce addition and homogenization on the microstructure and mechanical properties of Mg-2.0Zn-1.0Mn magnesium alloys were studied in the present investigation. The results showed that the addition of Ce can effectively refine the grain size of ZM21 alloy, improve the mechanical properties of magnesium alloy ZM21 and reduce the latent heat and solidification temperature range of the alloy. Homogenizing annealing treatment slightly affected the microstructure and mechanical properties of ZM21 alloy extrusion products but significantly affected the ZM21+Ce magnesium alloy. The fracture analysis indicated that the fracture of the two alloys was mixed fracture, while the fracture of magnesium alloy ZM21+Ce showed more ductile fracture feature.

Effect of Annealing on Mechanical Properties of Copper Alloys Deformed at Cryogenic Temperature

2013 ◽  
Vol 745-746 ◽  
pp. 363-370 ◽  
Author(s):  
Xiao Xiang Wu ◽  
Yu Lan Gong ◽  
Shi Ying Ren ◽  
Jing Mei Tao ◽  
Yan Long ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Annealing Temperature ◽  
Uniform Elongation ◽  
Copper Alloys ◽  
Annealing Treatment ◽  
Annealing Process ◽  
Optimal Annealing Temperature ◽  
Elongation To Failure ◽  
Cold Rolled ◽  
Zn Alloys

The effect of annealing treatment on the mechanical properties and microstructure of cold-rolled Cu-20% Zn alloys was investigated in this work. Mechanical properties changed dramatically with the increase of temperature. According to the microhardness test, it can roughly concluded that 150 is the optimal annealing temperature for deformation, at which a uniform elongation increased from 1.4658% before annealing to about 6.89%, and the elongation to failure increased from 7.426% to 16.81% with the same strength almost retained. The changes of microstructure during the annealing process are mainly distributed to the improvement of mechanical properties.

AZ31 and WE43 Alloys for Biomedical Applications

2017 ◽  
Vol 270 ◽  
pp. 205-211 ◽  
Author(s):  
Drahomír Dvorský ◽  
Jiří Kubásek ◽  
Dalibor Vojtěch
Keyword(s):  
Mechanical Properties ◽  
Magnesium Alloys ◽  
Biomedical Applications ◽  
Intermetallic Phases ◽  
Alloying Elements ◽  
Biodegradable Implants ◽  
Preparation Process ◽  
Magnesium Matrix ◽  
Corrosion Properties ◽  
Mechanical And Corrosion Properties

Magnesium and its alloys are considered for application as materials for biodegradable implants as they have mechanical properties similar to bone tissue. High demands on corrosion and mechanical properties are made on these alloys. While mechanical properties of magnesium are usually enhanced by alloying, corrosion properties may deteriorate. This paper is focused on the comparison of magnesium alloys AZ31 (3 wt. % Al, 1 wt. % Zn) and WE43 (4 wt. % Y, 3 wt. % Nd) which are considered for biomedical applications. Besides the type of alloying elements, the preparation process has also great impact on final mechanical and corrosion properties. Alloying elements may be dissolved in magnesium matrix or they can form intermetallic phases, which alter final properties. Microstructure, mechanical and corrosion properties of AZ31 and WE43 were studied and compared with pure magnesium.

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