Results 131 to 140 of about 847 (175)

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

Serrated flow in magnesium alloy AZ91

Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, 2004
Serrated flow has recently been observed in the ternary Mg-9 wt.% Al-1 wt.% Zn alloy AZ91 at room temperature. Binary and ternary alloys with various contents of Zn and Al have, therefore, been tested to determine the extent to which the individual solutes, Al or Zn, are responsible for the serrations.
C H Cáceres
exaly   +5 more sources

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
openaire   +1 more source

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
openaire   +1 more source

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
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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

Inverted disk centrifugal atomization of AZ91 magnesium alloy

Canadian Metallurgical Quarterly, 1997
Abstract Magnesium AZ91 alloy powder was produced by centrifugal atomization under various conditions using an inverted disk atomizer. The particle size distribution was obtained as a function of the disk shape and rotation speed. The microstructure of particles and their shape were examined and characterized.
C. Labrecque, R. Angers, R. Tremblay, D. Dubé   +3 more
openaire   +1 more source

Corrosion characteristics of AZ91 magnesium alloy weldments

Materials Research Innovations, 2009
Abstract The welding of AZ91 magnesium alloy was carried out using hybrid welding. The relationships between the microstructures and corrosion behaviours of AZ91 magnesium alloy weldments were investigated. The microstructure was examined using optical microscopy, electron probe microanalysis, scanning electron microscopy and X-ray diffraction analysis.
R. Z. Xu, G. Song, Z. Wang
openaire   +1 more source