ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
This paper studies FGH96 P/M Superalloy dynamic recrystallization phenomenon underisothermal forging conditions. Curves of work hardening rate θ versus flow stress σ and RTTcurve of dynamic recrystallization are gained through the analysis. At the same time, someparameters are confirmed including peak strain, critical strain and the maximal softening strain. Onthe basis of the analysis, the type of FGH96 P/M Superalloy dynamic recrystallization is exactlyestimated. The quantitative metallography method is adopted to determine the recrystallized grainsize. With combining the obtained data and parameters, FGH96 P/M Superalloy dynamicrecrystallization mathematic model is established by regression method. At the same time, the forgingprocess of FGH96 P/M superalloy is simulated by using software MSC/Superform under differentdeformation conditions such as deformation temperature and deformation velocity. The contourimages of the grain size distribution under different conditions and different deformation degree aregained and analyzed. With the analysis, it is known that the effect of the different deformationconditions on the microstructure of the forging is obvious and there is different distribution of thegrain size on various locations, which indicates that the deformation degree of the billet also hasinfluence on the grain size
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/18/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.575-578.455.pdf
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