Abstract
The influence of initial ingot breakdown on the rolling and recrystallization textures of high-purity tantalum plate was investigated using optical microscopy and X-ray diffraction. The four ingot breakdown processes investigated include two commercial processes and two processes new to tantalum. Correlations among the four ingot breakdown processes, the recrystallized grain size, and the final texture were established. Of the four breakdown processes investigated, the plate from the completely upset-forged ingot had the strongest {111}<110> and {111}<112> texture components, while the plate from the side-forged ingot recrystallized with a mixed texture. Increased upset forging along the ingot centerline strenghened the {111}<uvw> orientations and weakened the {100}<uvw> orientations in the annealed plates. Recrystallization studies were conducted on the rolled plates to develop an optimum texture with both {111}<110> and {111}<112> texture components in the final recrystallized plate.
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Clark, J.B., Garrett, R.K., Jungling, T.L. et al. Influence of initial ingot breakdown on the microstructural and textural development of high-purity tantalum. Metall Trans A 22, 2959–2968 (1991). https://doi.org/10.1007/BF02650255
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DOI: https://doi.org/10.1007/BF02650255