An ultra-high strength Mg-3Al-Zn alloy with low tension-compression yield asymmetry

2020 ◽  
Vol 269 ◽  
pp. 127489
Author(s):  
J. Feng ◽  
X.W. Li ◽  
H.F. Sun ◽  
W.B. Fang
Keyword(s):  
High Strength ◽  
Low Tension ◽  
Zn Alloy

Developing an industrial-scale ECAP Mg-Al-Zn alloy with multi-heterostructure for synchronously high strength and good ductility

2020 ◽  
Vol 164 ◽  
pp. 110341 ◽  
Author(s):  
Jiapeng Sun ◽  
Bingqian Xu ◽  
Zhenquan Yang ◽  
Xiaoru Zhuo ◽  
Jing Han ◽  
...  
Keyword(s):  
High Strength ◽  
Industrial Scale ◽  
Good Ductility ◽  
Zn Alloy

scholarly journals Liquation Cracking Tendency of Novel Al-Mg-Zn Alloys with a Zn/Mg Ratio below 1.0 during Fusion Welding

Metals ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 222
Author(s):  
Di Zhang ◽  
Xin Zhao ◽  
Yanlin Pan ◽  
Hongxiang Li ◽  
Li Zhou ◽  
...  
Keyword(s):  
High Strength ◽  
Fusion Welding ◽  
The Novel ◽  
Liquation Cracking ◽  
Melted Zone ◽  
Solidification Stage ◽  
Mgzn2 Phase ◽  
Zn Alloy ◽  
Cracking Tendency ◽  
Zn Alloys

The main obstacle for the application of high strength 7××× series aluminum alloys is that these alloys are susceptible to hot cracking during fusion welding. This study presents the liquation cracking susceptibility of the novel T-Mg32(AlZn)49 phase strengthened Al-Mg-Zn alloy with a Zn/Mg ratio below 1.0 by a circular-patch welding test, and compared the liquation cracking tendency with η-MgZn2 phase strengthened 7××× series alloys whose Zn/Mg ratios are above 1.0. It was found that all these novel Al-Mg-Zn alloys still have as low a liquation cracking susceptibility as traditional 5××× series alloys, surpassing that of traditional 7××× series alloys substantially. It was noticed that the increase of the Zn/Mg ratio will result in a larger difference between the fraction solids of the fusion zone and the partially melted zone during the terminal solidification stage, which can lead to a wider crack healing disparity between these two areas and thus result in different liquation cracking susceptibilities in different alloys.

Effect of Multiwalled Carbon Nanotubes (MWCNTs) on the Micro-Hardness and Corrosion Behaviour Mg-Zn Alloy Prepared by Powder Metallurgy

2020 ◽  
Vol 1000 ◽  
pp. 115-122
Author(s):  
Nono Darsono ◽  
Murni Handayani ◽  
Franciska Pramuji Lestari ◽  
Aprilia Erryani ◽  
I Nyoman Gede Putrayasa ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Powder Metallurgy ◽  
Magnesium Alloys ◽  
Corrosion Behaviour ◽  
Density Ratio ◽  
High Strength ◽  
Multiwalled Carbon ◽  
Corrosion Properties ◽  
Biodegradable Implant ◽  
Zn Alloy

Magnesium Alloys have the potential to be applied in the various fields of applications including biomaterials. Magnesium Alloys are an interesting alloy due to its high strength to density ratio. They have been proposed as a biodegradable implant material due to its friendly effect to human body compared to another alloy. Besides its good biodegradable properties, it has a disadvantage of low hardness and corrosion properties. In order to overcome this, it has been combined with other metals such as Zinc (Zn) or Copper (Cu). To increase mechanical properties, we used Carbon Nanotubes (CNT) as reinforcement. Magnesium-Zinc (Mg-xZn) CNTs composites with several compositions was prepared by using powder metallurgy and sintered in the presence of flowing Argon (Ar) gas in tube furnace. Mg-Zn Alloy with the composition of 4% and 6% of Zn and the variation of CNTs at 0.1%, 0.3 %, and 0.5% was also prepared. Hardness testing by using microvickers showed that CNTs can increase the alloy hardness which the maximum hardness is 53.6 HV. The corrosion rates as low as 175.5 mpy exhibited for the Mg-Alloy with the composition of Mg-4-Zn with 0.1 wt.% of CNTs

scholarly journals Development of high-strength, low-cost wrought Mg–2.0mass% Zn alloy with high Mn content

2016 ◽  
Vol 26 (6) ◽  
pp. 630-635 ◽  
Author(s):  
Fusheng. Pan ◽  
Jianjun Mao ◽  
Gen Zhang ◽  
Aitao Tang ◽  
Jia She
Keyword(s):  
Low Cost ◽  
High Strength ◽  
Mn Content ◽  
Zn Alloy

scholarly journals Fracture Behavior of a Laser Beam Welded High-strength Al-Zn Alloy

2014 ◽  
Vol 3 ◽  
pp. 1828-1833 ◽  
Author(s):  
J. Enz ◽  
H. Iwan ◽  
S. Riekehr ◽  
V. Ventzke ◽  
N. Kashaev
Keyword(s):  
Laser Beam ◽  
Fracture Behavior ◽  
High Strength ◽  
Zn Alloy

Microstructure and properties of high strength Al-Fe-Cu-Si-Zn alloy (AA8079) produced by mechanical alloying and powder metallurgy

2019 ◽  
Vol 61 (7) ◽  
pp. 627-634
Author(s):  
Meiyanathan Meignanamoorthy ◽  
Manickam Ravichandran ◽  
Vinoth Sundar Vidhya ◽  
Veeramani Anandakrishnan
Keyword(s):  
Powder Metallurgy ◽  
Mechanical Alloying ◽  
High Strength ◽  
Microstructure And Properties ◽  
Zn Alloy

Microstructures and Mechanical Properties of As-Cast and Extruded Mg-2wt.%Zn Alloy Containing Dilute Content of Misch Metal

2011 ◽  
Vol 686 ◽  
pp. 260-264
Author(s):  
Qi Chi Le ◽  
Zhi Qiang Zhang ◽  
Jian Zhong Cui ◽  
Zheng Jia
Keyword(s):  
Mechanical Properties ◽  
High Strength ◽  
Second Phase ◽  
Test Results ◽  
Phase Precipitation ◽  
Misch Metal ◽  
Second Phases ◽  
Microstructures And Mechanical Properties ◽  
Zn Alloy ◽  
Zn Alloys

Microstructures and Mechanical Properties of as-cast and extruded Mg–2wt.%Zn alloys containing dilute misch metal were investigated. RE additions were added in the form of relatively inexpensive cerium-rich misch metal (MM). The results indicate that the dilute MM addition has evidently effect the microstructure and mechanical properties of Mg-2wt.% Zn alloy. The grain refinement was improved and the amount of second phase precipitation was increased as increasing MM content in Mg-2wt.%Zn alloy from 0.2% to 1.5%, and the hardness determination and tensile test results show that the hardness of its ingot and the tensile strength of its extrusion rod were also enhanced, however, excessive MM addition would promote second phases forming network precipitating in grain boundary, which would result in the marked reduction of the plasticity of the alloy. Therefore, it is recommended that the MM content not exceed 0.6% in order to obtain high strength companying with relative higher elongation. The tensile properties of as-extruded Mg-2Zn-0.6wt.%MM alloy rod were UTS=266.7MPa, YS=213MPa, EL=14.5% which is similar to the corresponding properties of AZ31.

Understanding the Compromise between Strength and Exfoliation Corrosion in High Strength 7000 Alloys

2006 ◽  
Vol 519-521 ◽  
pp. 455-460 ◽  
Author(s):  
T. Marlaud ◽  
B. Baroux ◽  
Alexis Deschamps ◽  
J.L. Chemin ◽  
C. Hénon
Keyword(s):  
Corrosion Resistance ◽  
Volume Fraction ◽  
High Strength ◽  
Precipitate Size ◽  
Scanning Calorimetry ◽  
X Ray Scattering ◽  
Transmission Electron ◽  
Size Evolution ◽  
Zn Content ◽  
Zn Alloy

The microstructural evolution has been investigated in three alloys of the 7000 series possessing increasing zinc contents by combining small-angle X-ray scattering, differential scanning calorimetry and transmission electron microscopy, in order to gain understanding on the evolution of the compromise between yield strength and corrosion resistance. We show that the three materials show qualitatively identical precipitation sequences; however the precipitated volume fraction is shown to increase in parallel to the Zn content. Moreover, the precipitate size evolution is faster in the high Zn alloy. The precipitate composition is inferred to vary in the three materials, and this difference is shown to explain the differences in calorimetric behavior, precipitation kinetics and corrosion resistance.

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