scholarly journals Biodegradation and Mechanical Integrity of Magnesium and Magnesium Alloys Suitable for Implants

10.5772/55584 ◽  
2013 ◽  
Author(s):  
S. Gonzlez ◽  
E. Pellicer ◽  
S. Suriach ◽  
M.D. Bar ◽  
J. Sort
Keyword(s):  
Magnesium Alloys ◽  
Mechanical Integrity

Challenges and Opportunities in Electrochemically Coating Calcium Phosphate on Magnesium Alloys for Biodegradable Implant Applications

2014 ◽  
Vol 783-786 ◽  
pp. 1269-1273
Author(s):  
Mathan Bobby Kannan
Keyword(s):  
Calcium Phosphate ◽  
Magnesium Alloys ◽  
Suitable Method ◽  
Biodegradable Materials ◽  
Biodegradable Implant ◽  
Physiological Conditions ◽  
Mechanical Integrity ◽  
Challenges And Opportunities

Magnesium alloys are attractive for use as biodegradable materials for temporary implant applications. However, the high localized degradation of magnesium alloys in physiological conditions is a major concern, which can affect the mechanical integrity of the implant during service. Calcium phosphate (CaP) coating is a suitable method to delay the initiation of localized attack in magnesium alloys. This paper will discuss the challenges and opportunities in electrochemically coating CaP on magnesium and its magnesium alloys for biodegradable implant applications.

Microstructural and Mechanical Behaviour Evaluation of Mg-Al-Zn Alloy Friction Stir Welded Joint

2020 ◽  
Vol 17 (3) ◽  
pp. 8150-8159
Author(s):  
Kulwant Singh ◽  
Gurbhinder Singh ◽  
Harmeet Singh
Keyword(s):  
Heat Treatment ◽  
Friction Stir Welding ◽  
Magnesium Alloys ◽  
Mechanical Performance ◽  
Fuel Efficiency ◽  
Research Work ◽  
Grain Structure ◽  
Tensile Fracture ◽  
Friction Stir ◽  
The Impact

The weight reduction concept is most effective to reduce the emissions of greenhouse gases from vehicles, which also improves fuel efficiency. Amongst lightweight materials, magnesium alloys are attractive to the automotive sector as a structural material. Welding feasibility of magnesium alloys acts as an influential role in its usage for lightweight prospects. Friction stir welding (FSW) is an appropriate technique as compared to other welding techniques to join magnesium alloys. Field of friction stir welding is emerging in the current scenario. The friction stir welding technique has been selected to weld AZ91 magnesium alloys in the current research work. The microstructure and mechanical characteristics of the produced FSW butt joints have been investigated. Further, the influence of post welding heat treatment (at 260 °C for 1 h) on these properties has also been examined. Post welding heat treatment (PWHT) resulted in the improvement of the grain structure of weld zones which affected the mechanical performance of the joints. After heat treatment, the tensile strength and elongation of the joint increased by 12.6 % and 31.9 % respectively. It is proven that after PWHT, the microhardness of the stir zone reduced and a comparatively smoothened microhardness profile of the FSW joint obtained. No considerable variation in the location of the tensile fracture was witnessed after PWHT. The results show that the impact toughness of the weld joints further decreases after post welding heat treatment.

Development of chemical hydrogen source based on magnesium alloys hydrides

2018 ◽  
pp. 27-31
Author(s):  
I.A. Gvozdkov ◽  
◽  
V.A. Belyaev ◽  
S.N. Potapov ◽  
V.N. Verbetsky ◽  
...  
Keyword(s):  
Magnesium Alloys

Fatigue behavior of calcium containing AZ91 magnesium alloys

2015 ◽  
Vol 57 (2) ◽  
pp. 126-130
Author(s):  
Dorothea Amberger ◽  
Tina Blickle ◽  
Heinz Werner Höppel ◽  
Mathias Göken
Keyword(s):  
Magnesium Alloys ◽  
Fatigue Behavior ◽  
Az91 Magnesium
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