Carbide-free bainitic (CFB) steels with a matrix of ferrite and thin layers retained austenite, to reduce the manufacturing costs, usually do not contain alloying elements. However, few reports were presented regarding effect elements on properties these steels. Thus, this study evaluates effects vanadium rare earth (Ce-La) microalloying structure, phase transformation kinetics, mechanical carb...

An experimental investigation dealing with failure characterization of 63/37 soldercopper interfaces is presented. The method of moird interferometry is used for mapping elasto-plastic deformations in bimaterials subjected to predominantly tensile loading. A method for quantifying the fracture parameter--the J-integral--using full-field measurement of crack opening displacements has been develo...

In this paper, the thermo-mechanical reliability of Cu/ultra low-k interconnects under chip to package interaction was investigated using finite element modeling and modified edge liftoff test (MELT). The crack propagation behavior in the low-k interconnect was simulated based on the crack tip opening displacement method (CTOD) and the maximum hoop stress criterion. In a six-level Cu/low-k inte...

Large deformation finite element analysis has been carried out to investigate the stress-strain fields ahead of a growing crack for compact tension (a/W=0.5) and three-point bend (a/W=0.1 and 0.5) specimens under plane stress condition. The crack growth is controlled by the experimental J-integral resistance curves measured by Sun et al. The results indicate that the distributions of opening st...

In this paper, Exchange and Correlation energies of boron nitride with the formula of B12N12 are calculated by using the DFT methods with STO-3G, 6-31G AND 6-311G basis sets. The optimized structure and electronic properties calculations for the studied molecule have been performed using Gaussian 09 program. A mathematical equation of second grade was exploited for the correlation and exchange ...