| abstract |
The invention according to the present applicationnprovides a high strength solidification body by solidifyingna starting metallic powder of iron and the like by means ofnplastic working using hydrostatic pressing, which is, forninstance, a high strength high toughness steel material andnthe like having a superfine texture comprising a crystallinentexture consisting of grains 5 µm or less in average diameter,nor preferably, 3 µm or less in average diameter. Furthermore,nthe present invention provides a steel material included innthe high strength solidification body, which contains oxidengrains 0.2 µm or less in diameter at a volume ratio of fromn0.5 to 60 %. |