Method for controlling microstructure and texture of tantalum
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United States of America Patent
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Mar 30, 2021
Grant Date -
Nov 30, 2017
app pub date -
Apr 23, 2015
filing date -
Dec 22, 2014
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Abstract
A method for controlling the microstructure and texture of tantalum is described. The method includes a first forging step for performing upset forging and come-back forging on a tantalum billet multiple times in different directions, the upset forging performed to press two surfaces of the tantalum billet in order to make the two surfaces close to each other and the come-back forging performed to restore the tantalum billet to a rectangular prism shape; and a second forging step for performing wedge forging and come-back forging on the tantalum billet multiple times in different directions, the wedge forging performed to press two edges located in a diagonal direction of the tantalum billet and parallel to each other in order to make the two edges close to each other, and the come-back forging performed to restore the tantalum billet to the rectangular prism shape.
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