Corrosion-resistant replica alloy material with stable high-temperature structure and preparation method of corrosion-resistant replica alloy material
A technology of alloy materials and structures, applied in metal processing equipment, manufacturing tools, welding equipment, etc., can solve problems such as mechanical properties that cannot meet the requirements, and achieve the effect of stable structure
Pending Publication Date: 2022-02-22
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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[0003] The currently mature structural material for molten salt reactors is UNS N10003 alloy (70wt.%Ni-16wt.%Mo-7wt.%Cr solid-solution nickel-based superalloy), and its maximum allowable temperature is 704°C. However, high temperature High-efficiency energy conversion such as hydrogen production requires molten salt reactors to operate above 800°C. At this time, the mechanical properties of the UNS N10003 alloy can no longer meet the requirements. Therefore, the development of molten salt reactors that can serve for a long time at higher temperatures (≥850°C) Alloys become an urgent problem to be solved
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[0034] The first embodiment of the present application relates to a method for preparing a corrosion-resistant replica alloy material with stable structure at high temperature. The preparation method includes the following steps:
[0035] In step 101, the surface of the Inconel 617 alloy parent material is polished to a metallic luster. It should be pointed out that when cleaning, grinding and polishing the surface of Inconel 617 alloy base metal, use special tools and not mix them with other alloys.
[0036] Afterwards, enter step 102, remove impurities such as moisture, phosphate, halogen and oil stains on the surface of the Inconel 617 alloy base material. For example, alcohol can be used to wipe the surface to remove moisture, phosphate, oil, grease, oxides, tapes, paints and marking materials and other carbon-containing substances, halogens and other foreign substances on the surface of the Inconel 617 alloy substrate.
[0037] Afterwards, enter step 103, if the ambient ...
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The invention relates to the field of replica alloy materials, and discloses a corrosion-resistant replica alloy material with a stable high-temperature structure and a preparation method of the corrosion-resistant replica alloy material. The preparation method comprises the steps that pure nickel solder is used for conducting surfacing on the surface of Inconel 617 alloy base metal, and during surfacing, the welding heat input is controlled to be 1440-1920 J / mm, the number of surfacing layers is larger than or equal to 3, and the total surfacing layer thickness is larger than or equal to 3 mm. According to the embodiment of the invention, the molten salt corrosion resistance of the alloy can be obviously improved while good high-temperature structure stability is kept.
Description
technical field [0001] The application relates to the field of composite alloy materials, in particular to a corrosion-resistant composite alloy material with stable high-temperature structure and its preparation technology. Background technique [0002] The molten salt reactor is the only liquid fuel reactor among the six types of fourth-generation reactors, and has unique advantages such as high inherent safety, water-free cooling, and small modularization. The complex environment such as high temperature, strong molten salt corrosion and strong neutron irradiation in the molten salt reactor puts forward extremely strict requirements on the reactor materials. [0003] The currently mature structural material for molten salt reactors is UNS N10003 alloy (70wt.%Ni-16wt.%Mo-7wt.%Cr solid-solution nickel-based superalloy), and its maximum allowable temperature is 704°C. High-efficiency energy conversion such as hydrogen production requires molten salt reactors to operate abov...
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IPC IPC(8): B23K31/02G21C1/22
CPCB23K31/02G21C1/22Y02E30/30
Inventor 高丽娜叶祥熙陈双建周兴泰
Owner SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI