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Ensuring laser-based weld quality with nanoindentation

from AZO Materials

As with traditional welding techniques, materials are melted in the weld zone, although laser-based techniques use quicker heating and cooling cycles (Figure 1). These rapid thermal cycles are a potential cause for concern due to cracks forming. Cracks form due to thermal stresses and changes in the microstructure, which produce undesirable or inhomogeneous mechanical properties. This area is known as the heat-affected zone (HAZ). more

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