X-ray and Mechanical Elastic Constants of Polycrystalline Metals

Facile measurement of single-crystal elastic constants from polycrystalline samples

Elastic constants are among the most fundamental properties of materials. Simulations of microstructural evolution and constitutive/micro-mechanistic modeling of materials properties require elastic constants that are predominately measured from single crystals that are labor intensive to grow. A facile technique is developed to measure elastic constants from polycrystalline samples. The techni...

X-Ray Diffraction Study of HCP Metals II. Line Broadening in Polycrystalline Zn and Mg Powder

Microstructures of polycrystalline hexagonal close packed (hep) Zn and Mg have been studied by x-ray diffraction line broadening analysis using the integral breadth method, and the Fourier coefficient method. For these two methods, several diffraction peaks were considered to obtain two suitable peak combinations. For the room temperature powder samples, the root mean square (rms) strain was ob...

Analysis of Elastic constants and Lattice Parameters of Fe2B from X-Ray Diffraction Technique

Elastic constants like Bulk modulus, Shear modulus and magnetic moment were calculated theoretically using the Birch–Murnaghan equations of state fitted into the equation of state. This data was compared with the experimental data Published by Chen B, Penwell D, Nguyen J H and Kruger M B 2004 Solid State Commun. The experimental data used for comparison was studied by using Energy dispersive X-...

Bending modes, elastic constants and mechanical stability of graphitic systems

Elastic constants of fibre-textured thin films determined by X-ray diffraction

A new methodology is presented that allows the rapid determination of elastic constants of cubic fibre-textured thin films by X-ray diffraction. The theoretical concept is developed and tested on calculated examples of Cu and CrN films. The mechanical elastic constants are extrapolated from X-ray elastic constants by taking into consideration crystal and macroscopic elastic anisotropy. The deri...