Abstract
The paper presents a review of transformations in a number of metal materials during hot isostatic pressing which result in changes in the shape, density, morphology, and composition of the structural components of some metals, including cast, powder, and composite titanium alloys, heat-resistant nickel alloys, hard alloys of the WC-Co system, and also some aluminum and aluminide materials. Methods for studying the compaction processes using an eddy current dilatometric cell and differential barothermal analysis to determine the baric shift of the characteristic temperatures for some heat-resistant nickel alloys are described. The data on the practical application of hot isostatic pressing are presented, which makes it possible to fabricate the most important parts of gas turbines. It is shown that hot isostatic pressing causing transformations of different physicochemical origin should be considered as a necessary step of the production of metals to ensure their limiting strength characteristics.
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