MANUFACTURE OF AUSTENITIC STAINLESS STEEL FOR BORON-CONTAINING NUCLEAR POWER

PURPOSE:To manufacture an austenitic stainless steel for the shielding of neutrons by forming a surrounding layer of austenitic steel powder contg. no boron around the boron-contg. austenitic stainless steel powder and subjecting the same to hot isostatic pressing and hot working. CONSTITUTION:The s...

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Bibliographic Details
Main Authors TERASAWA TAKESHI, WATABE YOSHIHIRO
Format Patent
LanguageEnglish
Published 07.07.1989
Subjects
ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:PURPOSE:To manufacture an austenitic stainless steel for the shielding of neutrons by forming a surrounding layer of austenitic steel powder contg. no boron around the boron-contg. austenitic stainless steel powder and subjecting the same to hot isostatic pressing and hot working. CONSTITUTION:The surrounding layer of the austenitic stainless steel contg., by weight, <=0.1% C, <=1.0% Si, <=2.0% Mn, 7.0-25.0% Ni, 11.0-27.0% Cr and the balance consisting of Fe with inevitable impurities is formed around the austenitic stainless steel powder contg. <=0.1% C, <=1.0% Si, <=2.0% Mn, 7.0-25.0% Ni, 11.0-27.0% Cr, 0.5-5% B and the balance consisting of Fe with inevitable impurities. The powder is then subjected to hot isostatic pressing to form the ingot having >=5mm thickness of surrounding layer; and the ingot is thereafter subjected to hot working. By this method, the austenitic stainless steel for the storage and transport of atomic waste or for the shielding of neutrons can be obtd.
Bibliography:Application Number: JP19870330450