scholarly journals Effect of Alternating Bending on Texture, Structure, and Elastic Properties of Sheets of Magnesium Lithium Alloy

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
N. M. Shkatulyak ◽  
S. V. Smirnova ◽  
V. V. Usov
Keyword(s):  
Magnesium Alloy ◽  
Elastic Properties ◽  
Crystallographic Texture ◽  
Room Temperature ◽  
Transverse Direction ◽  
Wide Scatter ◽  
Texture Structure ◽  
Initial Texture ◽  
Equiaxed Grains ◽  
Alternating Bending

The effect of low-cycle alternating bending at room temperature on the crystallographic texture, metallographic structure, and elastic properties of sheets of MgLi5 (mass) magnesium alloy after warm cross-rolling has been studied. Texture of alloy is differed from the texture of pure magnesium. The initial texture of alloy is characterized by a wide scatter of basal poles in the transverse direction. In the process of alternating bending, the changes in the initial texture and structure (which is represented by equiaxed grains containing twins) lead to regular changes in the anisotropy of elastic properties.

Evolution of Microstructure and Crystallographic Texture in AA2014 Aluminium Alloy during Equal Channel Angular Extrusion

2011 ◽  
Vol 702-703 ◽  
pp. 97-100 ◽  
Author(s):  
Sivaswamy Giribaskar ◽  
K.S. Suresh ◽  
Gouthama ◽  
Satyam Suwas
Keyword(s):  
Aluminium Alloy ◽  
Crystallographic Texture ◽  
Room Temperature ◽  
Equal Channel Angular Extrusion ◽  
Al Alloy ◽  
Microstructural Changes ◽  
Angular Extrusion ◽  
Initial Texture ◽  
Evolution Of Microstructure ◽  
2014 Al Alloy

Present work addresses the evolution of texture and microstructure of equal channel angular extrusion (ECAE) processed AA 2014 Al alloy upto four passes at room temperature by adopting route BC. TEM is used to assess the microstructural changes during each ECAE pass. Texture measurements on samples of each pass were carried out by XRD technique. The evolution of texture components after each ECAE pass are analyzed and the changes are discussed with respect to the initial texture.

Mechanical Properties of ECAP Processed Magnesium Alloy AS21X

2006 ◽  
Vol 503-504 ◽  
pp. 889-894 ◽  
Author(s):  
T.T. Lamark ◽  
Ralph Jörg Hellmig ◽  
Yuri Estrin
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Magnesium Alloy ◽  
Grain Refinement ◽  
Magnesium Alloys ◽  
Elastic Properties ◽  
Room Temperature ◽  
Tensile Tests ◽  
Coarse Grained ◽  
Cyclic Behaviour

Typically, magnesium alloys with conventional grain size exhibit microplastic behaviour already at low stresses. This behaviour restricts the technological utilization of these materials. The aim of this study was to investigate whether ECAP can be applied to enlarge the elastic range of AS21X. Cyclic tensile tests at room temperature were carried out to examine the effect of the ECAP induced grain refinement on the elastic properties. The results obtained are compared with the cyclic behaviour of conventional, coarse-grained AS21X. The differences in mechanical properties between the two conditions are discussed.

Research on Microstructure and Room Temperature Plasticity of Mg94.5Zn4Y1Er0.5 Alloy Sheet

2011 ◽  
Vol 239-242 ◽  
pp. 3207-3210
Author(s):  
Zhong Jun Wang ◽  
Yang Xu ◽  
Jia Cheng ◽  
Zhao Jing Wang ◽  
Bao Hua Kang ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Rare Earth ◽  
Magnesium Alloy ◽  
Rare Earth Elements ◽  
Tensile Properties ◽  
Room Temperature ◽  
Transverse Direction ◽  
Hot Extrusion ◽  
Alloy Sheet ◽  
Basal Texture

The microstructure and tensile properties at room temperature of as-extruded Mg94.5Zn4Y1Er0.5 alloy sheet were studied. The results show that the alloy is mainly composed of equiaxial-liked α-(Mg) grains and W phase containing lots of rare earth elements (F.C.C. structure, a=0.707nm). The elongation and tensile strength of the alloy sheet in hot extruded and transverse direction are 25.5 %, 29.9 % and 247 MPa, 240 MPa, respectively. The above results manifest that the W phase stimulate the DRX during hot extrusion, reduce the preference of basal texture of magnesium alloy, markedly improve the plastically shaping capability at room temperature.

MAGNESIUM AZ31B

Alloy Digest ◽  
1962 ◽  
Vol 11 (9) ◽  
Keyword(s):  
High Temperature ◽  
Magnesium Alloy ◽  
Physical Properties ◽  
Room Temperature ◽  
Heat Treating ◽  
General Purpose ◽  
Bearing Strength ◽  
Temperature Performance ◽  
Wrought Magnesium Alloy ◽  
Metal Products

Abstract Magnesium AZ31B is a general purpose wrought magnesium alloy for room temperature service. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive, shear, and bearing strength as well as creep. It also includes information on low and high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: Mg-53. Producer or source: The Dow Metal Products Company.

FIRST--PRINCIPLES CALCULATIONS OF STRUCTURAL STABILITIES AND ELASTIC PROPERTIES OF AB2 TYPE INTERMETALLICS IN ZA62 MAGNESIUM ALLOY

2010 ◽  
Vol 2010 (1) ◽  
pp. 97-103 ◽  
Author(s):  
Dianwu ZHOU ◽  
Shaohua XU ◽  
Fuquan ZHANG ◽  
Ping PENG ◽  
Jinshui LIU
Keyword(s):  
Magnesium Alloy ◽  
Elastic Properties ◽  
First Principles ◽  
First Principles Calculations

A comparative study of plastic deformation mechanisms in room-temperature and cryogenically deformed magnesium alloy AZ31

2021 ◽  
Vol 807 ◽  
pp. 140821
Author(s):  
Kai Zhang ◽  
Zhutao Shao ◽  
Christopher S. Daniel ◽  
Mark Turski ◽  
Catalin Pruncu ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Magnesium Alloy ◽  
Comparative Study ◽  
Room Temperature ◽  
Deformation Mechanisms ◽  
Alloy Az31 ◽  
Magnesium Alloy Az31

Room Temperature Screw Form Rolling of AZ91D Magnesium Alloy through Processing by Extrusion-Torsion Simultaneous Working

2014 ◽  
Vol 783-786 ◽  
pp. 375-379
Author(s):  
Mitsuaki Furui ◽  
Shouyou Sakashita ◽  
Kazuya Shimojima ◽  
Tetsuo Aida ◽  
Kiyoshi Terayama ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Room Temperature ◽  
Hardness Measurement ◽  
Rolling Process ◽  
X Ray Diffraction ◽  
X Ray ◽  
Az91d Magnesium Alloy ◽  
Microstructure Observation ◽  
Fine Grain ◽  
Simultaneous Processing

Extrusion-torsion simultaneous processing is a very attractive technique for fabricating a rod-shape material with fine grain and random texture. We have proposed a new screw form rolling process combined with preliminary extrusion-torsion simultaneous working. Microstructure evolution and mechanical property change of AZ91D magnesium alloy during extrusion-torsion simultaneous processing was examined through microstructure observation, X-ray diffraction analysis and micro-Vickers hardness measurement. By the addition of torsion, the crystal orientation of AZ91D magnesium alloy workpiece was drastically changed from basal crystalline orientation to the random orientation. Crystal grain occurred through the dynamic recrystallization and tended to coarsen with an increase of extrusion-torsion temperature. Grain refinement under 2 um was achieved at the lowest extrusion-torsion temperature of 523 K. M8 gauge AZ91D magnesium alloy screw was successfully formed at room temperature using the extrusion-twisted workpiece preliminary solution treating at 678 K for 345.6 ks. It was found that the extrusion-torsion temperature of 678 K must be selected to fabricate the good screw without any defects.

A study of high ductility Mg-2Gd-0.4Zr magnesium alloy under monotonic tension at room temperature

2021 ◽  
pp. 111299
Author(s):  
Tianxu Zheng ◽  
Yaobo Hu ◽  
Chao Zhang ◽  
Tianshuo Zhao ◽  
Fusheng Pan ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Room Temperature ◽  
High Ductility

Mechanical properties of nickel beryllides

1989 ◽  
Vol 4 (6) ◽  
pp. 1347-1353 ◽  
Author(s):  
T. G. Nieh ◽  
J. Wadsworth ◽  
C. T. Liu
Keyword(s):  
Crystal Structure ◽  
Mechanical Properties ◽  
Elastic Properties ◽  
Room Temperature ◽  
Vickers Microhardness ◽  
Interstitial Oxygen ◽  
Equiatomic Composition ◽  
Room Temperature Ductility ◽  
Hardness Increase ◽  
Microhardness Tester

The elastic properties of nickel beryllide have been evaluated from room temperature to 1000 °C. The room temperature modulus is measured to be 186 GPa, which is relatively low by comparison with other B2 aluminides such as NiAl and CoAl. Hardness measurements were carried out on specimens that had compositions over the range from 49 to 54 at. % Be, using both a Vickers microhardness tester and a nanoindentor. It was found that the hardness of NiBe exhibits a minimum at the equiatomic composition. This behavior is similar to that of aluminides of the same crystal structure, e.g., NiAl and CoAl. The effect of interstitial oxygen on the hardness of NiBe has also been studied and the results show that the presence of oxygen in NiBe can cause a significant increase in hardness. It is demonstrated that the hardness increase for the off-stoichiometric compositions is primarily caused by interstitial oxygen and can only be attributed partially to anti-site defects generated in off-stoichiometric compositions. Nickel beryllides appear to have some intrinsic room temperature ductility, as evidenced by the absence of cracking near hardness indentations.

Quantitative analysis on friction stress of hot-extruded AZ31 magnesium alloy at room temperature

2018 ◽  
Vol 34 (10) ◽  
pp. 1765-1772 ◽  
Author(s):  
Ling Wang ◽  
Yiquan Zhao ◽  
Jing Zhang ◽  
Ru Ma ◽  
Yandong Liu ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Magnesium Alloy ◽  
Room Temperature ◽  
Friction Stress ◽  
Az31 Magnesium Alloy
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