公开(公告)号：US20060193742A1

公开(公告)日：2006-08-31

申请号：US10529418

申请日：2003-09-26

申请人： Harumatsu Miura ,  Nobuaki Miyao ,  Hidenori Ogawa ,  Kazuo Oda ,  Munehide Katsumura ,  Masaru Mizutani

发明人： Harumatsu Miura ,  Nobuaki Miyao ,  Hidenori Ogawa ,  Kazuo Oda ,  Munehide Katsumura ,  Masaru Mizutani

IPC分类号： B22F3/105

CPC分类号： C22C38/40 ,  B22F1/0044 ,  B22F3/006 ,  B22F9/005 ,  B22F2998/00 ,  C21D2201/03 ,  C21D2211/001 ,  C22C33/02 ,  C22C38/58 ,  B22F3/105 ,  B22F3/14 ,  B22F3/20

摘要： The invention provides a super hard and tough, nano-crystal austenite steel bulk material having an improved corrosion resistance, and its preparation process. The austenite steel bulk material comprises an aggregate of austenite nano-crystal grains containing 0.1 to 2.0% (by mass) of a solid solution type nitrogen, wherein an oxide, nitride, carbide or the like of a metal or semimetal exists as a crystal grain growth inhibitor between and/or in said nano-crystal grains. For preparation, fine powders of austenite steel-forming components, i.e., iron and chromium, nickel, manganese, carbon or the like are mixed with a substance that becomes a nitrogen source. Mechanical alloying (MA) is applied to the mixture, thereby preparing nano-crystal austenite steel powders having a high nitrogen concentration. Finally, the austenite steel powders are consolidated by sintering by means of spark plasma sintering, rolling or the like.

摘要翻译： 本发明提供了具有改善的耐腐蚀性的超硬和坚韧的纳米晶体奥氏体钢体材料及其制备方法。 奥氏体钢本体材料包含含有0.1〜2.0质量％固溶体氮的奥氏体纳米晶粒，其中作为晶粒存在金属或半金属的氧化物，氮化物，碳化物等 所述纳米晶粒之间和/或之间的生长抑制剂。 为了制备，将奥氏体钢成形组分即铁和铬，镍，锰，碳等的细粉末与成为氮源的物质混合。 将机械合金化（MA）施加到混合物上，从而制备氮浓度高的纳米级奥氏体钢粉末。 最后，奥氏体钢粉末通过放电等离子体烧结，轧制等烧结来固结。

公开(公告)号：US07662207B2

公开(公告)日：2010-02-16

申请号：US10529418

申请日：2003-09-26

申请人： Harumatsu Miura ,  Nobuaki Miyao ,  Hidenori Ogawa ,  Kazuo Oda ,  Munehide Katsumura ,  Masaru Mizutani

发明人： Harumatsu Miura ,  Nobuaki Miyao ,  Hidenori Ogawa ,  Kazuo Oda ,  Munehide Katsumura ,  Masaru Mizutani

IPC分类号： B22F3/00

CPC分类号： C22C38/40 ,  B22F1/0044 ,  B22F3/006 ,  B22F9/005 ,  B22F2998/00 ,  C21D2201/03 ,  C21D2211/001 ,  C22C33/02 ,  C22C38/58 ,  B22F3/105 ,  B22F3/14 ,  B22F3/20

摘要： The invention provides a super hard and tough, nano-crystal austenite steel bulk material having an improved corrosion resistance, and its preparation process.The austenite steel bulk material comprises an aggregate of austenite nano-crystal grains containing 0.1 to 2.0% (by mass) of a solid solution type nitrogen, wherein an oxide, nitride, carbide or the like of a metal or semimetal exists as a crystal grain growth inhibitor between and/or in said nano-crystal grains.For preparation, fine powders of austenite steel-forming components, i.e., iron and chromium, nickel, manganese, carbon or the like are mixed with a substance that becomes a nitrogen source. Mechanical alloying (MA) is applied to the mixture, thereby preparing nano-crystal austenite steel powders having a high nitrogen concentration. Finally, the austenite steel powders are consolidated by sintering by means of spark plasma sintering, rolling or the like.

摘要翻译： 本发明提供了具有改善的耐腐蚀性的超硬和坚韧的纳米晶体奥氏体钢体材料及其制备方法。 奥氏体钢本体材料包含含有0.1〜2.0质量％的固溶体型氮的奥氏体纳米晶粒集合体，其中作为晶粒存在金属或半金属的氧化物，氮化物，碳化物等 所述纳米晶粒之间和/或之间的生长抑制剂。 为了制备，将奥氏体钢成形组分即铁和铬，镍，锰，碳等的细粉末与成为氮源的物质混合。 将机械合金化（MA）施加到混合物上，从而制备氮浓度高的纳米级奥氏体钢粉末。 最后，奥氏体钢粉末通过放电等离子体烧结，轧制等烧结来固结。

公开(公告)号：US20060127266A1

公开(公告)日：2006-06-15

申请号：US10529587

申请日：2003-09-30

申请人： Harumatsu Miura ,  Nobuaki Miyao ,  Hidenori Ogawa ,  Kazuo Oda ,  Munehide Katsumura ,  Masaru Mizutani

发明人： Harumatsu Miura ,  Nobuaki Miyao ,  Hidenori Ogawa ,  Kazuo Oda ,  Munehide Katsumura ,  Masaru Mizutani

IPC分类号： B22F3/10

CPC分类号： B22F3/006 ,  B22F2003/1032 ,  B22F2998/00 ,  B22F2998/10 ,  C22C9/01 ,  C22C14/00 ,  C22C21/12 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18 ,  C22C38/48 ,  C22C2200/04 ,  B22F3/08 ,  B22F3/20 ,  B22F9/005 ,  B22F3/14 ,  B22F3/105 ,  B22F1/0018 ,  C22C1/1084

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.

摘要翻译： 本发明提供高硬度，强度和韧性的纳米晶体金属体材料及其制备方法。 金属体材料包括金属纳米晶粒的集合体，其中存在金属或半金属的氧化物，氮化物，碳化物，硼化物等作为纳米晶粒之间和/或纳米晶粒中的晶粒生长抑制剂。 使用球磨机等将纳米金属块状材料形成组分的相应细粉末机械合金化（MA），由此制备纳米金属粉末。 然后，对粉末进行火花等离子体烧结，挤压，轧制或爆炸成形等热成形烧结处理，得到高硬度，强度和韧性的纳米晶体金属散装材料。