发明申请
US20060127266A1 Nano-crystal austenitic metal bulk material having high hardness, high strength and toughness, and method for production thereof
审中-公开
具有高硬度，高强度和韧性的纳米晶奥氏体金属体材料及其制造方法
- 专利标题： Nano-crystal austenitic metal bulk material having high hardness, high strength and toughness, and method for production thereof
- 专利标题（中）： 具有高硬度，高强度和韧性的纳米晶奥氏体金属体材料及其制造方法
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申请号： US10529587申请日： 2003-09-30
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公开(公告)号： US20060127266A1公开(公告)日： 2006-06-15
- 发明人: Harumatsu Miura , Nobuaki Miyao , Hidenori Ogawa , Kazuo Oda , Munehide Katsumura , Masaru Mizutani
- 申请人： Harumatsu Miura , Nobuaki Miyao , Hidenori Ogawa , Kazuo Oda , Munehide Katsumura , Masaru Mizutani
- 优先权： JP2002-287950 20020930
- 国际申请： PCT/JP03/12530 WO 20030930
- 主分类号： B22F3/10
- IPC分类号： B22F3/10
摘要：
The invention provides a high hard, strength and tough nano-crystal metal bulk material and a preparation process thereof. The metal bulk material comprises an aggregate of metal nano-crystal grains, wherein an oxide, nitride, carbide, boride or the like of a metal or semimetal exists as a crystal grain growth inhibitor between and/or in the nano-crystal grains. The respective fine powders of nano-metal bulk material-forming components are mechanically alloyed (MA), using a ball mill or the like, thereby preparing nano-metal powders. Then, hot forming-by-sintering treatment such as spark plasma sintering, extrusion and rolling or explosive forming is applied to the powders to obtain a high hard, strength and tough nano-crystal metal bulk material.