Results 181 to 190 of about 3,023 (212)

Fracture behavior of AZ91 magnesium alloy

Materials Letters, 2000
Abstract Optical microscopy and scanning electron microscopy (SEM) were used to examine the fracture behavior of AZ91 magnesium alloy ruptured by tensile and impact tests. AZ91 alloy generally revealed features of brittle fracture and cleavage is the principal fracture mode.
W J Ding, X Q Zeng, Y P Zhu
exaly   +2 more sources

Superplasticity in magnesium alloy AZ91

Materials Science and Engineering: A, 1991
Abstract The superplastic properties of conventionally cast and rapidly solidified magnesium alloy AZ91 have been studied. The latter material had by far the best superplastic properties, and elongations of at least 1000% were obtained in the temperature range 275–300 °C. Formation of pores during superplastic deformation had an adverse effect on the
Jan Ketil Solberg, Janne Tørklep, Øystein Bauger, Haavard Gjestland   +3 more
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AZ91D and AZ91E ALLOYS

Alloy Digest, 1988
Abstract AZ91D and AZ91E alloys are magnesium-aluminum-zinc-manganese alloys of closely controlled purity. Ingot is available for use in the production of improved corrosion resistant sand, permanent-mold and die castings. AZ91D is used for die casting and AZ91E for sand and permanent-mold castings. This datasheet provides information on
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Superplasticity of an AZ91 Magnesium Alloy

Materials Science Forum, 2007
The superplastic deformation characteristics of the AZ91, the mostly used magnesium alloy, were investigated at various strain rates in the interval from 3x10-5 to 1x10-2 s-1 and temperature of 420 °C. To prepare superplastic alloys thermo-mechanical treatment was used.
Zoltán Száraz, Zuzanka Trojanová, Talant Ryspaev, Volker Wesling   +3 more
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Damping capacities and tensile properties in Grp/AZ91 and SiCp/Grp/AZ91 magnesium matrix composites

Materials Science and Engineering: A, 2010
Grp/AZ91 and SiCp/Grp/AZ91 magnesium matrix composites were fabricated by stir casting with graphite particle size of 50 μm and SiC particle size of 10 μm. The as-cast composites were extruded at 350 °C with an extrusion ratio of 12:1. The experimental results reveal that the reinforcements play an important role on the tensile properties and damping ...
Y.W. Wu, K. Wu, K.B. Nie, K.K. Deng, X.S. Hu, X.J. Wang, M.Y. Zheng   +6 more
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Fatigue Fracture of AZ91 Magnesium Alloy

Advances in Computational Intelligence in Materials Science, 2023
On today's environment, the use of the proper material is critical in every business. Materials must be suitable for or meet the specifications of the industrial component. Magnesium alloys are well recognized as the lightest structural alloys. To strengthen its physical attributes, mg is alloyed with other elements.
Subash Chandrabose E, Gokulakrishnan M, Naveenkumar P, Babu C   +3 more
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Growth of Al8Mn5 Intermetallic in AZ91

2017
Al8Mn5 is crucial for impurity control and corrosion resistance of AZ91. We study the growth morphology of primary and eutectic Al8Mn5 after the equiaxed solidification of AZ91 cooled at ~1 K/s. Primary Al8Mn5 grew as ~10 μm equiaxed faceted crystals with multiple growth facets.
G. Zeng, J. W. Xian, C. M. Gourlay
openaire   +1 more source

Dendritic solidification of magnesium alloy AZ91

Metallurgical Transactions A, 1990
The magnesium alloy AZ91 has been studied under different solidification conditions, to establish the details of the as-cast structure. The electron backscattered pattern (EBSP) technique has been used to determine the crystallographic directions of the dendrite stem and the secondary arms.
K. Pettersen, O. Lohne, N. Ryum
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Surface modification of the AZ91 magnesium alloy

Archives of Civil and Mechanical Engineering, 2015
The main purpose of the study was to modify the surface layer of the AZ91 magnesium alloys with the use of the GTAW (Gas Tungsten Arc Welding) method. The remelting process was conducted with the use of an AC current with the concurrent cooling of the magnesium alloy in the liquid nitrogen bath.
M. Strzelecka, J. Iwaszko, M. Malik, S. Tomczyński   +3 more
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The Origin of Microporosity in Magnesium Alloy AZ91

SAE Technical Paper Series, 1994
<div class="htmlview paragraph">The persistent occurrence of microporosity defects in AZ91 castings has made it difficult to consistently produce sound parts. Earlier work established that dissolved hydrogen gas causes microporosity defects in AZ91; however, the exact role of hydrogen in the nucleation and growth of microporosity was not ...
James D. Shearouse, Barry A. Mikucki
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