Fe-Ni-Cr- based alloy strip having improved press-formability and used for electrode of electron gun
AssigneeNippon Mining & Metals Co., Ltd.
InventorToshiyuki Ono
Life of this patent
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Abstract
The Fe—Ni—Cr based alloy strip having improved press-formability is provided. The alloy strip essentially consists of from 15 to 20% of Cr, from 9 to 15% of Ni, the balance being Fe and unavoidable impurities, has 0.03% or less of cleanliness as stipulated under JIS G 0555, has final annealed temper and a preferred orientation texture in terms of 50% or less of degree of preferred orientation of the (111) plane in a central portion between the sheet surfaces which is expressed by the following formula: αc(111)=[Ic(111)/{Ic(111)+Ic(200)+Ic(220)+Ic(311)}]×100(%), with the proviso Ic(hkl) is the integral X-ray diffraction intensity of the (hkl) plane.
Claims6
An Fe—Ni—Cr based alloy strip having sheet surfaces, essentially consisting of from 15 to 20% of Cr, from 9 to 15% of Ni, the balance being Fe and unavoidable impurities, such percentages being based, on weight, having 0.03% or less of cleanliness as stipulated under JIS G 0555, having final annealed temper and a preferred orientation texture in terms of 50% or less of degree of preferred orientation of the (111) plane in a central portion between the sheet surfaces which is expressed by the following formula:
- αc(111)=[Ic(111)/{Ic(111)+Ic(200)+Ic(220)+Ic(311)}]×100(%),
- with the proviso Ic(hkl) is the integral X-ray diffraction intensity of the (hkl) plane.
An electrode of an electron gun formed by deep drawing and barring of a sheet, which sheet consists of an Fe—Ni—Cr based alloy, which alloy essentially consists of from 15 to 20% of Cr, from 9 to 15% of Ni;
- the balance being Fe and unavoidable impurities, such percentages being based on weight;
- has 0.03% or less of cleanliness as stipulated under JIS G 0555;
- has final annealed temper and a preferred orientation texture in terms of 50% or less of degree of preferred orientation of the (111) plane in a central portion between the sheet surfaces which is expressed by the following formula:
- αc(111)=[Ic(111)/{Ic(111)+Ic(200)+Ic(220)+Ic(311)}]×100(%),
- with the proviso Ic(hkl) is integral X-ray diffraction intensity of the (hkl) plane.
Dependencies are inferred from the claim text.