High-strength metal solidified material and acid steel and manufacturing methods thereof
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United States of America Patent
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Dec 25, 2001
Grant Date -
N/A
app pub date -
Dec 4, 2000
filing date -
Mar 26, 1998
priority date (Note) -
Expired
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Abstract
The invention according to the present application provides a high strength solidification body by solidifying a starting metallic powder of iron and the like by means of plastic working using hydrostatic pressing, which is, for instance, a high strength high toughness steel material and the like having a superfine texture comprising a crystalline texture consisting of grains 5 .mu.m or less in average diameter, or preferably, 3 .mu.m or less in average diameter. Furthermore, the present invention provides a steel material included in the high strength solidification body, which contains oxide grain 0.2 .mu.m or less in diameter at a volume ratio of from 0.5 to 60%.
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