Ni-Based Amorphous Alloy With High Ductility, High Corrosion Resistance and Excellent Delayed Fracture Resistance

a ductility, amorphous alloy technology, applied in the direction of metal layered products, layered products, chemistry apparatus and processes, etc., can solve the problems of not being used seriously as industrial materials for large-scale equipment, physical properties, etc., to achieve excellent ductility, corrosion resistance, and abrasion resistance, and retarded fracture resistance

Inactive Publication Date: 2013-10-10
NAKAYAMA STEEL WORKS +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0061]The Ni-based amorphous alloy of the present invention provides comprehensively excellent features such as excellent ductility, delayed fractu

Problems solved by technology

It has been nearly 50 years since the introduction of amorphous alloys in the world, but they are not used seriously as industrial materials for large-size equipment.
The reasons for this are the issue concerning equipment having a high cooling rate when preparing amorphous alloys with a sheet thickness ranging from 300 to 150 microns when used in large-sized equipment and additionally the issue from a physical aspect in that the physical properties (excellent ductility and delayed fracture resistance) with which amorphous alloys can be used as industri

Method used

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  • Ni-Based Amorphous Alloy With High Ductility, High Corrosion Resistance and Excellent Delayed Fracture Resistance
  • Ni-Based Amorphous Alloy With High Ductility, High Corrosion Resistance and Excellent Delayed Fracture Resistance
  • Ni-Based Amorphous Alloy With High Ductility, High Corrosion Resistance and Excellent Delayed Fracture Resistance

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Embodiment Construction

[0066]The Ni-based amorphous alloy according to the present invention can be produced by so-called single roller method or double roller method using one or two cooled rollers. Furthermore, it can be produced by the thermal spraying method using a thermal spraying device with a quenching function.

[0067]The inventors prepared a ribbon (metallic film) made of a Ni-based amorphous alloy with a single roller method based on the following procedures. Namely, as for each amorphous alloy shown in Table 1, a mixture of pure metals and semimetals of corresponding components was dissolved by high frequency heating under an Ar atmosphere and cast in a Cu mold to obtain mother alloy. This mother alloy was dissolved again by high frequency heating under an Ar atmosphere and sprayed on the surface of a single roller rotating while cooling from the inside to obtain an amorphous ribbon. The thickness of the amorphous ribbon was adjusted to 30 μm and 60 μm by changing the number of rotations of the ...

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Abstract

[Problem] To prepare an amorphous alloy as an authentic industrial-use material with a wide range of applications by solving various problems such as delayed fracture and ductility.
[Solution] The alloy includes 63 at % or more of Ni and consists only of, as a semimetal for amorphization, other than P. The semimetal may include, for example, 10 to 25 at % of B and one or more of Cr, Mo, and Nb as remaining main elements.

Description

TECHNICAL FIELD[0001]The invention according to Claims relates to Ni-based amorphous alloy which has high ductility, excellent resistance to delayed fracture caused by hydrogen, and high corrosion resistance, and can be used in large quantities as an industrial material.BACKGROUND ART[0002]It has been nearly 50 years since the introduction of amorphous alloys in the world, but they are not used seriously as industrial materials for large-size equipment. The reasons for this are the issue concerning equipment having a high cooling rate when preparing amorphous alloys with a sheet thickness ranging from 300 to 150 microns when used in large-sized equipment and additionally the issue from a physical aspect in that the physical properties (excellent ductility and delayed fracture resistance) with which amorphous alloys can be used as industrial materials are not satisfied. Presently, the inventors tackled the issues of physical properties and solved them.[0003]Fe-based amorphous alloys ...

Claims

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Application Information

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IPC IPC(8): C22C45/04
CPCC22C45/04C22C45/02B32B15/015C22C19/056C22C19/058C22C1/002C22C1/03C22C1/11
Inventor KURAHASHI, RYUROUMIMURA, TSUNEHIROAMIYA, KENJISAOTOME, YASUNORI
Owner NAKAYAMA STEEL WORKS
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