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Damping behaviour of AZ91 magnesium alloy with cracks
Materials Science and Engineering: A, 2004Abstract The amplitude-dependent damping of a commercial magnesium cast alloy AZ91 was determined at room temperature by measurement of the logarithmic decrement of free decaying vibrations of bending beams clamped at one side. In order to generate cracks in the specimens they were subjected to (1) isochronal heat treatments for 1 h at temperatures ...
Jürgen Göken, Werner Riehemann
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Study on mechanical properties of AZ91 magnesium alloy
Materials Today: Proceedings, 2022Abstract The lightest structural metal present on Earth’s surface is Magnesium (Mg). Mg is very useful for many applications like automobile, aeronautical etc. Mg has many limitations and because of which it cannot be used directly as a replacement of steel and aluminum.
Avinash Srinivas +4 more
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Corrosion performance of magnesium alloys MEZ and AZ91
International Journal of Cast Metals Research, 2000The corrosion performance of sand cast MEZ(S), zirconium-grain-refined MEZ(R), sand cast AZ91(S), and high pressure diecast AZ91(D) magnesium alloys were evaluated by means of salt spray testing, optical metallography, hydrogen evolution, polarisation curve measurement and AC impedance spectroscopy. The results show that the corrosion resistance of the
Song, Guangling, StJohn, David
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Interdependence of Hydrogen and Microporosity in Magnesium Alloy AZ91
SAE Technical Paper Series, 1993<div class="htmlview paragraph">The relationship between hydrogen gas and microporosity in magnesium alloy AZ91 was quantified, refuting the belief that hydrogen levels less than the maximum solid solubility are of no detriment. Sand castings were made from melts containing measured levels of hydrogen gas, and the amount of porosity was ...
Barry A. Mikucki, James D. Shearouse
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Crystallography of directionally solidified magnesium alloy AZ91
Metallurgical Transactions A, 1989The crystallographic direction of growth in directionally solidified magnesium alloy AZ91 has been studied by TEM and EBSP techniques in SEM. The main direction of growth is found to be $$\left\langle {11\bar 20} \right\rangle $$ .
Ketil Pettersen, Nils Ryum
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Characterisation of TG-SCC In Pure Magnesium and AZ91 Alloy
2008Our recent critical review of the stress corrosion cracking (SCC) of magnesium aims to provide a foundation for the safe and effective use of magnesium alloys, including practical guidelines for the service use of Mg alloys in the atmosphere and/or in contact with aqueous solutions.
Winzer, N. +4 more
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Two-Step Anodization of AZ91 Magnesium Alloy
Materials Science Forum, 2005Among four AZ91 samples, two were once anodized and the others were twice anodized in two electrolytic baths. After twice anodization, two coatings coexist on the base metal. Surface morphology showed that for one of twice anodic coatings (sample 2), the second coating only existed on some places and sealed some pores of the first coating after short ...
Rong Fa Zhang, Da Yong Shan, En-Hou Han
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Study on the fluidity of AZ91+xRE magnesium alloy
Materials Science and Engineering: A, 1999Influence of section thickness, pouring temperature, mould temperature and content of rare earth (RE) element on the fluidity of AZ91 magnesium alloy has been studied through fluidity specimens with different section thickness cast in metal mould. The results show that the relation curve of filling length versus section thickness can be divided into ...
Wang Qudong +6 more
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Study on the Filtering Purification of AZ91 Magnesium Alloy
Materials Science Forum, 2009High quality magnesium casting depends significantly on the purification of its alloy melt. However, it is very difficult to obtain high-quality magnesium alloy melt due to its high reactivity and its tendency of combustion. The fluxing processing, a traditional purification method for magnesium melt, not only bears the risk of flux inclusions but also
Qi Chi Le +3 more
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Nickel Foam Reinforced AZ91 Magnesium Alloy
Materials Science Forum, 2007Nickel foam reinforced AZ91 magnesium alloy was fabricated by using melt infiltration and water quenching methods. The mechanical properties were measured in compressive and tensile deformation modes. Fracture surfaces were examined by scanning electronic microscopy.
Ke Qiang Qiu +4 more
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