Formation Mechanism of Non-Equilibrium Phases during Bulk Mechanical Alloying by Accumulative Roll Bonding Process
累积滚焊过程块体机械合金化过程中非平衡相的形成机制
基本信息
- 批准号:17360355
- 负责人:
- 金额:$ 9.92万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (B)
- 财政年份:2005
- 资助国家:日本
- 起止时间:2005 至 2006
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Mechanical alloying (MA) of bulky sheet materials was tried by means of accumulative roll bonding (ARB). The MA by ARB made it possible to fabricate the bulky samples processed to various strain levels under well-controlled process conditions, such as temperature and strain rate, which enabled us to observe the microstructure and phase transition as a function of strain. The structure and composition of the obtained specimens were analyzed in nano-meter scale.The multilayered stacks of Cu+Zr and Fe+Al were deformed by the ARB process. Cu-Zr is a well-known amorphous formation system, while it has been thought that no amorphous phase can be obtained in Fe-Al system. In case of Zr+Cu multilayer, not only microstructural mixture but also atomistic level of micture were confirmed above 6 cycles ARB, so that supersaturated solid solution was obtained. It was also found that amorphous phase formed at interface regions between Cu and Zr. It was a surprising result since the severe plastic deformation (ARB) was conducted at ambient temperature in the present study. Nano-beam EDS analysis for the nano-lamellar structures clarified that a certain level of atomistic mixture is necessary for amorphous formation. During a heat treatment of the ARB sample, solid state amorphization proceeded to form the bulky composites of amorphous and nanocrystals. Atomistic mixture by ARB also proceeded in Fe-Al system, and supersaturated solid solution was obtained as well. However, amorphous phase was hardely observed in Fe-Al system. Only in the limited interface regiuons, small amount of amorphous was found. It was also clarified that the amorphous phase was formed via intermetallic compound.The present study indicated the potential of bulk mechanical alloying by the use of the ARB process and pointed out the importance of severe plastic deformation as well as the importance of interfaces for mechanical alloying reactions.
采用累积叠轧焊(ARB)方法对大体积板材进行了机械合金化(MA)试验。ARB的MA使得在良好控制的工艺条件(例如温度和应变速率)下制造加工到各种应变水平的大体积样品成为可能,这使我们能够观察微观结构和相变作为应变的函数。在纳米尺度上分析了样品的结构和成分,并对Cu+Zr和Fe+Al多层叠层进行了ARB变形。Cu-Zr系是一个著名的非晶形成体系,而Fe-Al系一直被认为不能形成非晶相。对于Zr+Cu多层膜,在6次以上的ARB循环中,不仅确认了微观结构的混合,而且确认了原子级的混合,从而获得过饱和固溶体。在Cu和Zr的界面处形成了非晶相。这是一个令人惊讶的结果,因为严重的塑性变形(ARB)在本研究中在环境温度下进行。对纳米片状结构的纳米束EDS分析澄清了一定水平的原子混合对于非晶形成是必要的。在ARB样品的热处理过程中,固态非晶化进行,形成非晶和纳米晶体的大体积复合物。在Fe-Al系中,ARB也进行原子混合,得到过饱和固溶体。而Fe-Al系中几乎没有非晶相。结果表明,非晶相是通过金属间化合物形成的,只有在有限的界面区域才有少量的非晶相存在.本研究表明了ARB工艺在机械合金化中的应用潜力,指出了剧烈塑性变形的重要性以及界面对机械合金化反应的重要性.
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Internal Stress Field in Ultrafine Grained Aluminum Fabricated by Accumulative Roll-Bonding
累积滚压超细晶粒铝的内应力场
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:R.Ueji;J.Taniguchi;N.Sumida;K.Tanaka;N.Tsuji
- 通讯作者:N.Tsuji
Formation of Ultrafine Grained Structures in Structural Metallic Materials by Severe Plastic Deformation
通过剧烈塑性变形在结构金属材料中形成超细晶粒结构
- DOI:
- 发表时间:2005
- 期刊:
- 影响因子:0
- 作者:Y.Minamino;Y.Koizumi;N.Tsuji;N.Hirohata;K.Mizuuchi;Y.Ohkanda;N.Tsuji
- 通讯作者:N.Tsuji
SEVERE PLASTIC DEFORMATION : Towards Bulk Production of Nanostructured Materials
严重塑性变形:走向纳米结构材料的批量生产
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:B.L.Li;N.Tsuji;N.Kamikawa;N.Tsuji
- 通讯作者:N.Tsuji
Quantification of Annealed Microstructures in ARB Processed Aluminu
ARB 加工铝中退火微观结构的量化
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:N.Kamikawa;N.Tsuji;X.Huang;N.Hansen
- 通讯作者:N.Hansen
Bulk Mechanical Alloying of Zr-Cu System by Accumulative Roll Bonding (ARB).
通过累积轧制接合 (ARB) 对 Zr-Cu 系进行块体机械合金化。
- DOI:
- 发表时间:2005
- 期刊:
- 影响因子:0
- 作者:N.Tsuji;S.Kato;S.Ohsaki;K.Hono;Y.Minamino
- 通讯作者:Y.Minamino
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TSUJI Nobuhiro其他文献
Ultra-Grain Refinement of High Entropy Alloys
高熵合金的超晶粒细化
- DOI:
10.2497/jjspm.67.113 - 发表时间:
2020 - 期刊:
- 影响因子:0
- 作者:
YOSHIDA Shuhei;IKEUCHI Takuto;BHATTACHARJEE Tilak;BAI Yu;SHIBATA Akinobu;TSUJI Nobuhiro - 通讯作者:
TSUJI Nobuhiro
TSUJI Nobuhiro的其他文献
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{{ truncateString('TSUJI Nobuhiro', 18)}}的其他基金
Dynamic Phase Transformation above Equilibrium Transformation Temperature in Steels
钢中平衡转变温度以上的动态相变
- 批准号:
26630365 - 财政年份:2014
- 资助金额:
$ 9.92万 - 项目类别:
Grant-in-Aid for Challenging Exploratory Research
Fabrication of Nanocrystalline Metallic Materials without Severe Plastic Deformation
无严重塑性变形的纳米晶金属材料的制备
- 批准号:
25600039 - 财政年份:2013
- 资助金额:
$ 9.92万 - 项目类别:
Grant-in-Aid for Challenging Exploratory Research
Challenge to Managing Both Strength and Ductility in Metallic Materials
管理金属材料强度和延展性的挑战
- 批准号:
24246114 - 财政年份:2012
- 资助金额:
$ 9.92万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
Practical Applications of' Learning-Sleep' Materials to Elementary and Junior High School Education
“学习-睡眠”教材在中小学教育中的实际应用
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21530983 - 财政年份:2009
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$ 9.92万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Martensitic Transformation from Nanostructured Metastable Austenitic Steels
纳米结构亚稳奥氏体钢的马氏体转变
- 批准号:
20360333 - 财政年份:2008
- 资助金额:
$ 9.92万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
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中小学教育“学习-睡眠”教材开发
- 批准号:
19530807 - 财政年份:2007
- 资助金额:
$ 9.92万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
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