A Study of the Role of Grain-Boundary Engineering
in Promoting High-Cycle Fatigue Resistance
is concerned with failure.
Unfortunately, it can only be measured by observing failure, and this
that an accurate description of reliability can only be made after the
materials in question have failed. The reliability of materials is
influenced by every aspect of design and prototype testing, quality
and control, and subsequent maintenance, together with feedback of
order to improve the reliability as
well as performance, computer-aided micromechanical modeling, coupled
state-of-the-art fracture mechanics and fatigue experiments, are
being employed to establish the cracking behavior of airplane alloys
on titanium and nickel base superalloys during fatigue and creep
by modeling the microstructure
response and evolution during thermomechanical processes based on alloy
composition, strain, atmosphere, temperature, and time, we can obtain
on how to optimize processing conditions to make desired
and properties for materials we are interested.
Successful work in this regard will provide the foundation necessary for the improvements of currently used superalloys as well as developments of new materials with high performance and reliability.