Method for manufacturing alloy 690 ordered alloy with improved thermal conductivity, and alloy 690 ordered alloy manufactured thereby
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United States of America Patent
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Jun 30, 2020
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Nov 16, 2017
app pub date -
Dec 3, 2015
filing date -
Dec 5, 2014
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Abstract
The present invention relates to a method for manufacturing Alloy 690 ordered alloy to be used in a steam generator tube serving as a heat exchanger in a nuclear power plant (hereinafter, referred to as NPP), and Alloy 690 ordered alloy manufactured thereby, and provides a method for manufacturing Alloy 690 ordered alloy with improved thermal conductivity, and Alloy 690 ordered alloy manufactured thereby, the method comprising the steps of: solution-annealing Alloy 690; cooling the solution-annealed Alloy 690 to a first temperature of 200° C./min or less; and ordering the cooled Alloy 690 in the temperature range of 410-520° C.
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