Strengthening mechanisms in NiAl bronze: hot deformation by rolling and friction-stir processing
Menon, Sarath K.
Pierce, Frank A.
Rosemark, Brian P.
McNelley, Terry R.
MetadataShow full item record
Microstructures produced by isothermal hot rolling of a NiAl bronze material were evaluated by quantitative microscopy methods and parameters describing the contributions of precipitate dispersions, grain size, solute content, and dislocation density to the yield strengths of the individual constituents of microstructure were determined. Models for the strengths of the individual constituents were combined to predict the temperature dependence of the yield strength as a function of hot rolling temperature, and the prediction was found to be in good agreement with measured yield strengths. The models were applied to microstructures in a stir zone produced by multipass friction-stir processing (FSP) and, again, found to predict measured yield strengths with high accuracy. Such models may aid in assessing the role of microstructure gradients produced during FSP and other processes.
The article of record as published may be found at http://dx.doi.org/10.1007/s11661-012-1181-x
Showing items related by title, author, creator and subject.
Grider, William H.,Jr. (1986);In previous research on thermomechanically processed high - Mg, \1 - Mg alloys, yield strengths of 276 MPa (40 ksi) were retained after simulated superplastic forming, but ductility at ambient temperature varied from ...
The effects of isothermal deformation and annealing on the microstructure of nickel-aluminum-bronze in relation to the friction stir process Vazquez, Brian K. (Monterey, California. Naval Postgraduate School, 2003-12);The FSP of Nickel Aluminum Bronze is a novel approach to enhance the microstructural properties of the material through a shear deformation process. This thesis examines the effect on microstructure of isothermal annealing ...
Pierce, Frank Allen (Monterey, California, Naval Postgraduate School, 2004-06);The extreme strain, strain rate and temperature gradients during Friction Stir Processing (FSP) render measurement of key parameters in the stir zone infeasible with common methods. The objective of this research was to ...