Effects of Post Heat Treatment on the Interfacial Characteristics of Aluminum Coated AZ91D Magnesium Alloy

2007 ◽  
Vol 546-549 ◽  
pp. 529-532 ◽  
Author(s):  
Jin Zhang ◽  
Ying Wang ◽  
Rong Chang Zeng ◽  
Wei Jiu Huang
Keyword(s):  
Heat Treatment ◽  
Magnesium Alloy ◽  
Spray Coating ◽  
Aluminum Coating ◽  
Diffusion Kinetics ◽  
Post Heat Treatment ◽  
Az91d Magnesium Alloy ◽  
Metallurgical Bonding ◽  
Kinetics Of ◽  
Interfacial Characteristics

Aluminum spray coating was applied onto AZ91D magnesium alloy. The effects of post heat treatment on the interfacial characteristics, especially the diffusion kinetics of magnesium and aluminum atoms across the interface were studied in this paper. It was observed that there was an obvious interface between the aluminum coating and the magnesium alloy substrate. It was found that post heat treatment could reduce the number of pores existed in the aluminum coating. The post heat treatment resulted in not only the change in the composition and microstructure of the aluminum coating, but also the improved metallurgical bonding between the coating and the substrate.

Effect of Heat Treatment on Microstructures and Properties of Zinc-Aluminum Coating on AZ91D Magnesium Alloy

2008 ◽  
Vol 373-374 ◽  
pp. 55-58 ◽  
Author(s):  
Jin Zhang ◽  
Ying Wang
Keyword(s):  
Heat Treatment ◽  
Magnesium Alloy ◽  
Thermal Shock ◽  
Spray Coating ◽  
Aluminum Coating ◽  
Post Heat Treatment ◽  
Corrosion Resistant ◽  
Az91d Magnesium Alloy ◽  
Corrosion Behaviors ◽  
Shock Resistance

A protective zinc-aluminum spray coating and a post heat treatment was carried out onto AZ91D magnesium alloy. The effect of post heat treatment on the interfacial characteristics, corrosion behaviors, micro-hardness, and thermal shock resistance of the zinc-aluminum coating were evaluated in this paper. It was found that a dense inter-coating formed at the Zn/Mg substrate interface followed by the post heat treatment. The results of EDS analysis indicated that the diffusion took place among Mg, Al and Zn atoms. The Zn-Al deposited coating with heat treatment had much more corrosion resistant and higher resistant to thermal shock. It was harder than as-received AZ91D Mg alloy.

Tribological and ageing behavior of Az91D magnesium alloy fortified with nano lanthanum and nanoceria by stir casting for aviation application

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Mohammed Fahad ◽  
Bavanish B.
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
Magnesium Alloy ◽  
Cerium Oxide ◽  
Stir Casting ◽  
Cerium Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Az91d Alloy ◽  
Content Type ◽  
Az91d Magnesium Alloy

Purpose The aviation field requires a material with the ability to withstand severe environmental conditions. The purpose of this paper is to provide higher wear resistance and improve the lifetime of aircraft. Hence, it is vital to enhance the wear resistance and strength of the material. Design/methodology/approach In this investigation, the Az91D magnesium alloy was reinforced with lanthanum (La2O3) and cerium oxide (CeO2) nanoparticles by stir casting and heat treatment process and the tribological and mechanical properties were analyzed. Findings The results showed the Az91D/CeO2 composite exhibited higher density (1.96 g/cm3) and lower porosity (1.01%) compared to other materials due to the diffusion of CeO2 nanoparticles in between the atoms of Az91D alloy. The hardness of Az91D/ CeO2 & Az91D/ La2O3 was improved by 38% and 34%, respectively, compared to Az91D alloy owing to the reinforcing effect of hard nanoparticles. Further, the inclusion of nanoparticles decreased the mass loss and showed lower wear rate compared to the Az91D alloy due to the pinning effect of nanoparticles. In addition, the friction coefficient was observed in the order of Az91D > Az91D/ La2O3 > Az91D/ CeO2. Moreover, the heat treatment displayed positive results on the properties of all the materials. Originality/value This work is original as the combination of cerium oxide nanoparticles with Az91D magnesium alloy is not tried by earlier investigators. Further, the comparative performance of both lanthanum and cerium oxide nanoparticles on the tribological and mechanical behavior of Az91D alloy has been analyzed for aviation application. This study will provide new information to the scientific world to increase the lifetime of aviation structures.

A aluminum coating with chromium-free passivating film formed on AZ91D magnesium alloy

2015 ◽  
Vol 635 ◽  
pp. 11-15 ◽  
Author(s):  
Liyuan Niu ◽  
Shiuan-Ho Chang ◽  
Yichang Su ◽  
Dong Han ◽  
Guangyu Li
Keyword(s):  
Magnesium Alloy ◽  
Aluminum Coating ◽  
Passivating Film ◽  
Az91d Magnesium Alloy

The influence of heat treatment on damping response of AZ91D magnesium alloy

2005 ◽  
Vol 392 (1-2) ◽  
pp. 150-155 ◽  
Author(s):  
Zhenyan Zhang ◽  
Xiaoqin Zeng ◽  
Wenjiang Ding
Keyword(s):  
Heat Treatment ◽  
Magnesium Alloy ◽  
Az91d Magnesium Alloy

scholarly journals INFLUENCE OF ELECTRIC TRANSFER ON DIFFUSION KINETICS IN A BIMETALLIC COMPOSITE OF THE CU - AL SYSTEM

2021 ◽  
pp. 7-11
Author(s):  
O. V. Slautin ◽  
S. P. Pisarev ◽  
D. V. Pronichev ◽  
V. P. Kulevich ◽  
M. N. Chikalov ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Electric Current ◽  
Diffusion Layer ◽  
Diffusion Zone ◽  
Layered Composite ◽  
Diffusion Kinetics ◽  
Bimetallic Composite ◽  
Kinetics Of

The effect of electrotransfer on the kinetics of growth of the diffusion zone during heat treatment of an explosion-welded bimetallic layered composite of the Cu-Al system has been investigated. It is shown that passing an electric current can accelerate the growth of the diffusion layer by up to 30% at short (up to ≈ 60 ÷ 90 minutes) exposures.

Coarsening kinetics of multiaxial forging (MAF) formed AZ91D magnesium alloy in semisolid state

2013 ◽  
Vol 17 (sup1) ◽  
pp. 16-20 ◽  
Author(s):  
H. Q. Ning ◽  
F. F. Peng ◽  
S. F. Zhu ◽  
Q. H. Hu ◽  
Z. R. Li ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Semisolid State ◽  
Az91d Magnesium Alloy ◽  
Coarsening Kinetics ◽  
Kinetics Of
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