CORROSION RESISTANT ZIRCONIUM ALLOY AND ITS MANUFACTURE

PURPOSE:To manufacture a Zr alloy having excellent nodular corrosion resistance by heating the Zr alloy having specific compsn., subjecting it to a quenching treatment and forming appropriately spheroidal crystal grains in the martensite structure. CONSTITUTION:The Zn alloy material consisting of, b...

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Bibliographic Details
Main Authors SATO KANEMITSU, HIGASHINAKAGAHA EMIKO, WATANABE KUNIMICHI, KUWAE YOSHIAKI
Format Patent
LanguageEnglish
Published 28.11.1988
Subjects
ALLOYS
CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:PURPOSE:To manufacture a Zr alloy having excellent nodular corrosion resistance by heating the Zr alloy having specific compsn., subjecting it to a quenching treatment and forming appropriately spheroidal crystal grains in the martensite structure. CONSTITUTION:The Zn alloy material consisting of, by weight, 1.2-1.7% Sn, 0.18-0.24% Fe, 0.07-0.13% Cr as well as 0.28-0.37% total amt. of Fe and Cr and the balance consisting substantially of Zr is applied to a heating treatment at 870-1,000 deg.C. The material is then subjected to the quenching treatment by water cooling, etc. Said treatment is suitably executed thereto in the manufacturing stage. By this method, the Zr alloy having the martensite structure provided with fine deposits in the grain boundary thereof and having the spheroidal crystal grains can be obtd. Said corrosion resistant Zr alloy is suitable as the core structural material such as a cut fuel covering tube, etc.
Bibliography:Application Number: JP19880085448