Machining method for improving obdurability of two-phase titanium alloy large-size bar
The invention provides a machining method capable of improving the obdurability of a two-phase titanium alloy large-size bar, comprising the following steps of: 1, performing cogging forging on a two-phase titanium alloy cast ingot; 2, performing primary upsetting-drawing forging; 3, performing homo...
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Main Authors | , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
27.02.2013
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Subjects | |
Online Access | Get full text |
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Summary: | The invention provides a machining method capable of improving the obdurability of a two-phase titanium alloy large-size bar, comprising the following steps of: 1, performing cogging forging on a two-phase titanium alloy cast ingot; 2, performing primary upsetting-drawing forging; 3, performing homogenization treatment; 4, performing secondary upsetting-drawing forging; and 5, performing annealing treatment on a finished product to obtain the two-phase titanium alloy large-size bar having a diameter of 250-450 mm. The two-phase titanium alloy large-size bar prepared by the machining method disclosed by the invention has a certain equiaxial alpha-phase content, original beta-crystalline grains are uniform and fine, and secondary alpha-strips are of a duplex organization structure with a certain length-width ratio, so that the flaw detection level of the large-size bar is raised while the strength and the fracture toughness of alloy is improved; and the two-phase titanium alloy large-size bar prepared by the ma |
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Bibliography: | Application Number: CN20121540484 |