Solid solution strengthened iron-base austenitic alloy
AssigneesJapan Atomic Energy Research Institute, Power Reactor and Nuclear Fuel Development Corporation
InventorsSusumu Isobe, Hajime Nakajima, Tatsuo Kondo, Katsutoshi Watanabe, Yasukazu Ishida, Takeshi Okada, Taiki Kobayashi
Life of this patent
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Abstract
A solid solution strengthened iron-base austenitic alloy is suitable for use in nuclear reactors having low oxidizing environment. It has a composition of 8 up to but not including 16.0% by weight of Cr, 14-35% by weight of Ni, 5-15% by weight of Mo plus 0.522 W, up to 1.0% by weight of Ti, up to 2% by weight of Mn, up to 1% by weight of Si, up to 0.1% by weight of C and the balance iron and unavoidable impurities.
Claims5
A solid solution strengthened iron-base austenitic alloy having remarkably improved strength and resistance to softening trends at elevated temperatures consisting essentially of 8-13.1% by weight of Cr, 14-30% by weight of Ni, 5-15% by weight of Mo plus 0.522 W, up to 1.0% by weight of Ti, up to 2% by weight of Mn, up to 1% by weight of Si, up to 0.1% by weight of C and the balance iron and unavoidable impurities.
A solid solution strengthened iron-base austenitic alloy having remarkably improved strength and resistance to softening trends at elevated temperatures, consisting essentially of 8-16.0% by weight Cr (exclusive of 16.0%), 14 to 35% by weight of Ni, 5-15% by weight of Mo plus 0.522 W, 0.11-1.0% by weight of Ti, up to 2% by weight of Mn, up to 1% by weight of Si, up to 0.1% by weight of C and the balance iron and unavoidable impurities.
A core element of an LMFBR formed of a solid solution strengthened iron-base austenitic alloy having remarkably improved strength and resistance to softening trends at elevated temperatures consisting essentially of 8-16% by weight of Cr, 14-35% by weight of Ni, 5-15% by weight of Mo plus 0.522 W, a quantity of Ti of up to 1.0% by weight, a quantity of Mn of up to 2% by weight, a quantity of Si of up to 1% by weight, a quantity of C of up to 0.1% by weight and the balance iron and unavoidable impurities.
A process comprising the new use, as a core element of an LMFBR, of a solid solution strengthened iron-base austenitic alloy having remarkably improved strength and resistance to softening trends at elevated temperatures consisting essentially of 8-16.0% by weight of Cr, 14-35% by weight of Ni, 5-15% by weight of Mo plus 0.522 W, a quantity of Ti of up to 1.0% by weight, a quantity of Mn of up to 2% by weight, a quantity of Si of up to 1% by weight, a quantity of C of up to 0.1% by weight and the balance iron and unavoidable impurities.
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