Rapid quench of large selection precipitation hardenable alloys
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United States of America Patent
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May 14, 2002
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N/A
app pub date -
Nov 3, 2000
filing date -
Nov 3, 2000
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Abstract
Large sections of solution annealed, precipitation hardenable alloys which are resistant to internal cracking yet fully hardenable can be produced if, during rapid quenching, the temperature of the section is allowed to stabilize immediately above the alloy's solvus temperature before the section is rapidly quenched. Preferably, the temperature of the section is allowed to stabilize a second time, this time at an elevated temperature not so high that significant phase changes occur, before the section is cooled to ambient.
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