Abstract Scope |
Functionally graded materials promise idealized properties including controlled thermal expansion ratios, more efficient cooling paths, and optimized structural properties. However, unknown metal phases formed within the gradient region when manufacturing FGMs have a wide range of properties which limit the accuracy of numerical methods. Existing studies on fracture in gradient materials avoid metals due to these complex phase transformations within the gradient region.
In this study, we use experimental techniques to aid in developing an accurate phase field simulation of fracture mechanics in a gradient alloy between C300 and Invar36. We have developed a methodology for measuring mechanical properties within a gradient alloy and implementing these properties into a state-of-the-art phase field model for fracture. Additionally, we identify critical compositions and metal phases which would lead to variance in fracture propagation. |