Character of fracture of sintered materials
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It is demonstrated on the example of sintered nickel and molybdenum that sintered materials are not characterized by a single type of fracture. In addition to fracture along the grain boundaries, fracture through the grains themselves was also observed, the predominance of either type of fracture in these materials being determined by the manufacturing technique.
As in the case of cast and wrought alloys, inclusions, precipitates, microcracks, and sharp pore corners were found to be the principal causes of premature fracture.
Sintered nickel and molybdenum produced by optimum techniques had strong grain boundaries, resulting in combined, trans- and intergranular, fracture.
KeywordsNickel Molybdenum Optimum Technique Single Type Manufacturing Technique
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