发明授权
- 专利标题： High-strength metal solidified material and acid steel and manufacturing methods thereof
- 专利标题（中）： 高强度金属凝固材料和酸性钢及其制造方法
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申请号： US09647100申请日： 2000-12-04
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公开(公告)号： US06332905B1公开(公告)日： 2001-12-25
- 发明人: Minoru Ootaguchi , Shuji Wanikawa , Yuji Muramatsu , Kaneaki Tsuzaki , Kotobu Nagai , Toru Hayashi
- 申请人： Minoru Ootaguchi , Shuji Wanikawa , Yuji Muramatsu , Kaneaki Tsuzaki , Kotobu Nagai , Toru Hayashi
- 优先权： JP10-079978 19980326; JP10-211657 19980727
- 主分类号： C22C3302
- IPC分类号： C22C3302
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 &mgr;m or less in average diameter, or preferably, 3 &mgr;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 &mgr;m or less in diameter at a volume ratio of from 0.5 to 60%.