Magnesium Alloy AZ91E and its Usage in Bicycle Frame Design

Fracture Toughness:- The bicycle frame should be able to show resistance to crack growth
in the material which makes it less susceptible to fractures. The material has a fracture
toughness exceeding 80-95 Mpa at 1*10 8 cycles which is good enough for using it bicycle
design.
Yield Strength:- The bicycle frame should have sufficient yield strength so that they will be
able to withstand the plastic deformation that will occur in the material because of the weight
of the human body. The yield strength of the material is about 83-97 MPa with the
temperature ranging from 0 to 240C which is good enough to protect the material from
plastic deformation at normal conditions.
Fatigue limit:- The current material steel has an expected life span of 5 to 7 years. Beside
this, it is also an easy target of plastic deformation. So, we are in need of such a material
which will be able to withstand for a longer period of time and with less chances of getting
damaged and this alloy gives us the perfect blend of our needs and it can withstand stress to
RESULTS:-
more than that time frame.
Cost:- The cost of the existing
material steel is about $100-$1000 for
the whole plastic replacement system.
So, for the new material the price
should be around this range or a bit
higher based on its performance level.
The new material price ranges to about
$800 per cubic foot.
Corrosion testing:- The Corrosion behavior of AZ91 magnesium alloy in simulating acid rain
under wet-dry cyclic condition has been investigated. The results show that corrosion potential
shifts positively and the corrosion current density decreases at low wet-dry cyclic time. Further