This paper proposes a wavelet based edge detection scheme by scale multiplication. The dyadic wavelet transforms at two adjacent scales are multiplied as a product function to magnify the edge structures and suppress the noise. Unlike many multiscale techniques that first form the edge maps at several scales and then synthesize them together, we determined the edges as the local maxima directly...

The compressive creep deforrn;~tiort microstructure of polycrystalline Ni3AI h:is been observed by transnlission electron microscopy (TEM). ( 1 1 I ) rind ( 110) slip systems have been identified in primary creep. Dissociatiort of edge superparti:~l pairs perpendicular to the slip plane (both { 11 1 ) and ( 110) ) is common in crept specimens. I'he formation of this superdislocation...

Understanding the intrinsic strengthening mechanism is of great significance for microstructural design Ni-based single crystal superalloys. In this paper, from an atomistic perspective, interacting between edge dislocation dipole pair and interfacial misfit network has been elaborated. It shown that a dislocations can effectively impede movement matrix dislocations, accommodate pile up pairs i...