Effect of Structured Laser Pulses on Grain Growth in H13 Tool Steel
In metal solidification. the cooling rate is an important factor in determining the resultant grain structure of the material. The paper discusses the results of a feasibility study done to determine whether a laser pulse scheme can be designed to affect, and eventually control, the resultant microstructure of the deposited material. A factorial experimental approach is applied to determine the significant parameters affecting grain size and orientation. Parameters investigated include maximum pulse power, pulse frequency, pulse shape, and material feed rate. Particular attention is given to parameter combinations that can cause grain growth through the layer boundaries of the deposited metal.
T. E. Sparks et al., "Effect of Structured Laser Pulses on Grain Growth in H13 Tool Steel," University of Texas Press, Jan 2006.
Mechanical and Aerospace Engineering
Article - Conference proceedings
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