公开(公告)号：EP1068915A1

公开(公告)日：2001-01-17

申请号：EP99910734.5

申请日：1999-03-26

申请人： Japan as represented by Director General of National Research Institute for Metals ,  Kawasaki Steel Corporation

发明人： OOTAGUCHI, Minoru National Res. Inst. for Metals. ,  WANIKAWA, Shuji National Res. Inst. for Metals. ,  MURAMATSU, Yuji National Res. Inst. for Metals. ,  TSUZAKI, Kaneaki National Res. Inst. for Metals. ,  NAGAI, Kotobu National Res. Inst. for Metals. ,  HAYASHI, Toru National Res. Inst. for Metals.

IPC分类号： B22F3/14 ,  C22C33/02 ,  C22C1/04

CPC分类号： B22F3/156 ,  B22F3/1208 ,  B22F3/18 ,  B22F3/20 ,  B22F2998/00 ,  B22F2998/10 ,  C22C33/02 ,  C22C33/0228 ,  B22F3/14 ,  B22F3/17 ,  B22F9/082

摘要： 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 µm or less in average diameter, or preferably, 3 µm or less in average diameter. Furthermore, the present invention provides a steel material included in the high strength solidification body, which contains oxide grains 0.2 µm or less in diameter at a volume ratio of from 0.5 to 60 %.

摘要翻译： 根据本申请的发明通过使用静水压力的塑性加工来固化铁等的起始金属粉末来提供高强度固化体，例如是高强度高韧性钢材等，其具有 包括由平均直径为5μm以下的平均直径或优选为3μm以下的晶粒组成的结晶质地的超细纹理。 此外，本发明提供了包含在高强度固化体中的钢材，其含有体积比为0.5至60％的直径为0.2μm或更小的氧化物颗粒。