Visualizing and Quantifying Deformation Microstructures in Cold Sprayed Materials
Brewer, Luke N.
Leazer, Jeremy D.
MetadataShow full item record
This paper examines the deformation microstructures produced in metallic alloys by the cold gas dynamic spray (“cold spray”) process. CS deposition is a solid-state deposition process in which high velocity (300-1200 m/s), small (10-50 μm) metallic particles impact and adhere to a substrate. As the spray gun is rastered over the substrate surface a coating, and even a three-dimensional solid, can be produced. The CS process is now being used for corrosion protection, mitigation, and repair.  This process produces metallic materials under extreme conditions. The combination of small particle size and high impact velocity produces strain rates on the order of 106-109/s with average particle strains on the order of 50%. Understanding the deformation mechanisms and the microstructures that they produce is key to controlling the cold spray process and the mechanical properties of the deposited material. This talk will describe the use of electron microscopy and diffraction techniques, e.g. SEM, TEM, electron backscatter diffraction (EBSD), transmission kikuchi diffraction (TKD), and precession electron diffraction (PED), to visualize and to quantify plastic deformation in aluminium alloy and austenitic stainless steel materials.
The article of record as published may be found at https://doi.org/10.1017/S1431927618011352
RightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
Showing items related by title, author, creator and subject.
Meyers, M.A.; Xu, Y.B.; Xue, Q.; Pérez-Prado, M.T.; McNelley, T.R. (Elsevier, 2003);Shear bands were generated under prescribed and controlled conditions in an AISI 304L stainless steel (Fe-18%Cr-8%Ni). Hat-shaped specimens were deformed in a Hopkinson bar at strain rates of ca 104 s-1 and shear strains ...
Development of Techniques for Investigating Energy Contributions to Target Deformation and Penetration During Reactive Projectile Hypervelocity Impact Peters, Max (Monterey, California. Naval Postgraduate School, 2011-07); NPS-PH-11-006There are longstanding interests in the effects during hypervelocity penetration of projectiles and shaped charge jets through water and through water submerged targets. The effects of apparent reaction during the penetration ...
Deformation induced primary crystallization in a thermally non-primary crystallizing amorphous Al85Ce8Ni5Co2 alloy Kovacs, Zs.; Henits, P.; Zhilyaev, A. P.; Revesz, A. (Elsevier, 2006-03-02);Nanocrystallization behavior of Al85Ce8Ni5Co2 amorphous ribbon induced by severe plastic deformation and by linear heating thermal treatment has been compared using differential scanning calorimetry, X-ray diffraction and ...