A new experimental technique for measuring strain and residual stresses during a laser remelting process

Texture characterisation of hexagonal metals: Magnesium AZ91 alloy, welded by laser processing

“…We can see two explanations of these evolutions. On the one hand, the effect of temperature and cooling speed gradients arise from the anisotropic heat flow [35], on the other, the anisotropy can be the result of a shrinking structure [36,37]. The negligible thermal dilation of both plates prevents the free shrinkage of the weld line along the direction of the weld line.…”

Microstructure and residual stresses in surface layer of simultaneously laser alloyed and burnished steel

“…The influence of the measurement method on the value of stresses, measured in surface layer after laser melting of stainless steel, was also analyzed by Grum and Sturm (2004). The stresses were determined by four different methods.…”

Application of Laser-Burnishing Treatment for Improvement of Surface Layer Properties

“…After laser remelting the stresses in the surface layer are generated in accordance with a hot stress model and they are mostly large tensile stresses, leading to the formation of microwww.intechopen.com cracks in extreme cases (Grum & Sturm, 2004;Robinson, 1996) Anthony and Cline 1977 proved theoretically that the surface topography is characterized by relatively high asperities and study (Radziejewska, 2006) where waviness and roughness after laser alloying was examined confirmed this. Such a state of surface implies a need for an additional machining in order to improve surface smoothness.…”