Mechanical Behaviors and Texture Development of the Extruded Magnesium AZ31 Alloys

2011 ◽  
Vol 695 ◽  
pp. 275-278
Author(s):  
Joon Sik Park ◽  
Jeong Min Kim ◽  
Young Ho Song ◽  
Dong Wook Lim ◽  
Won Seok Yang ◽  
...  
Keyword(s):  
Alloy System ◽  
Mg Alloys ◽  
Texture Development ◽  
Practical Application ◽  
Surface Stability ◽  
Specific Strength ◽  
Magnesium Az31 ◽  
Alloy Strength ◽  
Structural Parts ◽  
Strength And Ductility

Mg alloys are one attractive material in applications of transportations and mobile electronics due to their high specific strength compared with other structural materials. However, Mg alloys often exhibit relatively low strength and/or low surface stability, which can limit the practical application of the alloy system. In this perspective, thermo-mechanical treatments of the alloy can give enhanced materials strength, so that the application of the alloy system can be extended towards new structural parts for requiring the light nature of the alloy system. In this study, a high temperature extrusion has been carried out for the commercial Mg alloys (AZ31). The extrusion temperature and extrusion ratio critically affected the alloy strength and ductility. The texture development and alloy strengths with respect to the extrusion conditions have been discussed in terms of microstructural observations and phase analyses.

Fabrication Optimization of Magnesium Az61 Alloys via Extrusion for High Productivity

2011 ◽  
Vol 378-379 ◽  
pp. 727-730
Author(s):  
Joon Sik Park ◽  
Jeong Min Kim ◽  
Young Ho Song ◽  
Byung Hwan-Hong ◽  
Ye Won Cho ◽  
...  
Keyword(s):  
High Strength ◽  
Alloy System ◽  
Mg Alloys ◽  
Practical Application ◽  
Extrusion Speed ◽  
Surface Stability ◽  
High Productivity ◽  
Specific Strength ◽  
High Specific Strength ◽  
Structural Parts

The nature of high specific strength compared with other structural materials has led to wide application of Mg alloys. However, Mg alloys often exhibit relatively low strength and/or low surface stability, which can limit the practical application of the alloy system. In order to achieve high strength, the commercial AZ61 alloys were extruded, so that the application of the alloy system can be extended towards new structural parts for requiring the light nature of the alloy system. In this study, a high temperature extrusion has been carried out for the commercial Mg alloys (AZ61). The productivity and mechanical properties of the alloy were critically affected by the extrusion conditions such as temperature, extrusion ratio and extrusion speed. The texture development and alloy strengths with respect to the extrusion conditions have been discussed in terms of microstructural observations and phase analyses.

Influence of Rare Earth Elements in Magnesium Alloy - A Mini Review

2020 ◽  
Vol 979 ◽  
pp. 162-166
Author(s):  
N. Sivashanmugam ◽  
K. L. Harikrishna
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Magnesium Alloys ◽  
Biomedical Applications ◽  
High Strength ◽  
Alloy System ◽  
Damping Capacity ◽  
Specific Strength ◽  
Large Size ◽  
Strength And Ductility

In recent days, the use of Magnesium and its alloys is preferred in defence, automotive and aerospace industries where large size and complex components are required in light weight. Besides, magnesium alloys are used in computers, electronic devices and biomedical applications. Alloying magnesium with rare earth elements (RE) is used to develop the light alloys for the stated applications at elevated temperature. Rare earth magnesium alloys are having unique properties over other metals, including a high specific strength, low thermal conductivity, good damping capacity and good castability. In this review article, the recent development of rare earth magnesium alloys will be reviewed from the view point of novel alloying designs. It has been revealed that in ternary alloy system Mg-ZN-RE alloy exhibited high strength and ductility. This leads the researchers to investigate Mg-ZN-RE alloy recently.

scholarly journals Accelerated discovery of high-strength aluminum alloys by machine learning

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Jiaheng Li ◽  
Yingbo Zhang ◽  
Xinyu Cao ◽  
Qi Zeng ◽  
Ye Zhuang ◽  
...  
Keyword(s):  
Machine Learning ◽  
Aluminum Alloys ◽  
Mechanical Performance ◽  
High Strength ◽  
Cost Effective ◽  
Alloy System ◽  
Processing Route ◽  
Specific Strength ◽  
Cu Alloy ◽  
High Strength Aluminum Alloys

Abstract Aluminum alloys are attractive for a number of applications due to their high specific strength, and developing new compositions is a major goal in the structural materials community. Here, we investigate the Al-Zn-Mg-Cu alloy system (7xxx series) by machine learning-based composition and process optimization. The discovered optimized alloy is compositionally lean with a high ultimate tensile strength of 952 MPa and 6.3% elongation following a cost-effective processing route. We find that the Al8Cu4Y phase in wrought 7xxx-T6 alloys exists in the form of a nanoscale network structure along sub-grain boundaries besides the common irregular-shaped particles. Our study demonstrates the feasibility of using machine learning to search for 7xxx alloys with good mechanical performance.

scholarly journals Development of Novel Lightweight Dual-Phase Al-Ti-Cr-Mn-V Medium-Entropy Alloys with High Strength and Ductility

Entropy ◽  
2020 ◽  
Vol 22 (1) ◽  
pp. 74
Author(s):  
Yu-Chin Liao ◽  
Po-Sung Chen ◽  
Chao-Hsiu Li ◽  
Pei-Hua Tsai ◽  
Jason Jang ◽  
...  
Keyword(s):  
Compression Strength ◽  
High Strength ◽  
Alloy System ◽  
Dual Phase ◽  
Face Centered Cubic ◽  
Compression Tests ◽  
Arc Melting ◽  
Face Centered ◽  
Fcc Phase ◽  
Strength And Ductility

A novel lightweight Al-Ti-Cr-Mn-V medium-entropy alloy (MEA) system was developed using a nonequiatiomic approach and alloys were produced through arc melting and drop casting. These alloys comprised a body-centered cubic (BCC) and face-centered cubic (FCC) dual phase with a density of approximately 4.5 g/cm3. However, the fraction of the BCC phase and morphology of the FCC phase can be controlled by incorporating other elements. The results of compression tests indicated that these Al-Ti-Cr-Mn-V alloys exhibited a prominent compression strength (~1940 MPa) and ductility (~30%). Moreover, homogenized samples maintained a high compression strength of 1900 MPa and similar ductility (30%). Due to the high specific compressive strength (0.433 GPa·g/cm3) and excellent combination of strength and ductility, the cast lightweight Al-Ti-Cr-Mn-V MEAs are a promising alloy system for application in transportation and energy industries.

scholarly journals Praseodymium-decorated graphene oxide as a corrosion inhibitor in acidic media for the magnesium AZ31 alloy

RSC Advances ◽  
2018 ◽  
Vol 8 (60) ◽  
pp. 34275-34286 ◽  
Author(s):  
N. Palaniappan ◽  
Ivan. S. Cole ◽  
F. Caballero-Briones ◽  
Balasubaramanian K. ◽  
C. Lal
Keyword(s):  
Graphene Oxide ◽  
Corrosion Inhibitor ◽  
Az31 Alloy ◽  
Epoxy Coating ◽  
Mg Alloys ◽  
Diffusion Control ◽  
Acidic Media ◽  
Graphene Oxide Sheet ◽  
Coating Failure ◽  
Magnesium Az31

The Mg alloys 111 surface is covered by the praseodymium decorated graphene oxide sheet, and (A) & (B) indicates ions diffusion control (C) indicates epoxy coating failure.

First principles study of surface stability and segregation of PdRuRh ternary metal alloy system

2018 ◽  
Vol 671 ◽  
pp. 51-59 ◽  
Author(s):  
Susan Meñez Aspera ◽  
Ryan Lacdao Arevalo ◽  
Hiroshi Nakanishi ◽  
Hideaki Kasai
Keyword(s):  
First Principles ◽  
Alloy System ◽  
Metal Alloy ◽  
Surface Stability ◽  
First Principles Study ◽  
Ternary Metal

Twinning and texture development in two Mg alloys subjected to loading along three different strain paths

2007 ◽  
Vol 55 (11) ◽  
pp. 3899-3910 ◽  
Author(s):  
L. Jiang ◽  
J.J. Jonas ◽  
R.K. Mishra ◽  
A.A. Luo ◽  
A.K. Sachdev ◽  
...  
Keyword(s):  
Mg Alloys ◽  
Texture Development ◽  
Strain Paths

Investigation and Application of Excellent Performance Mg Rare Earth Alloys as a Structural Material

2007 ◽  
Vol 539-543 ◽  
pp. 1719-1722 ◽  
Author(s):  
Li Min Wang ◽  
Qiu Ming Peng ◽  
Jie Yang ◽  
Da Qing Fang ◽  
Yao Ming Wu ◽  
...  
Keyword(s):  
Rare Earth ◽  
Structural Material ◽  
Creep Resistance ◽  
Mg Alloys ◽  
Rare Earth Alloys ◽  
Excellent Performance ◽  
Specific Strength ◽  
High Specific Strength ◽  
Transmission Case ◽  
Re Elements

Magnesium (Mg) alloys are becoming one of the key engineering materials for aerospace and automotive industries because of their low density, high specific strength, excellent machinability and good diecastability, etc. In the meantime, conventional Mg alloys are limited for their low strength and creep resistance. Therefore, special attention is given on its applications at high temperature such as the transmission case and the engine block, In the near decades, much effort have been devoted to improving the properties such as strength, ductility, creep resistance of Mg alloys by adding rare earth (RE) elements, and it has been certified that the addition of RE do improve the performances of the Mg alloys. In this paper, we will review the progresses in the investigations of the Mg-RE alloys as a structural material, and also propose its application prospect in future.

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