Fabrication of bulk metallic glasses with improved mechanical properties in corrosive aqueous solutions and in cryogenic temperatures

制造在腐蚀性水溶液和低温下具有改进机械性能的块体金属玻璃

• 批准号: 20560644
• 负责人: KAWASHIMA Asahi
• 金额: $ 2.91万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20560644/
• 关键词: 金属ガラス; 機械的性質; 応力腐食割れ; 低温; 塑性ひずみ; 機械的質性; 腐食性水溶液; 透過電子顕微鏡; 引張強度; 塑性伸び; 圧縮強度

In general, metallic materials suffer brittle fracture when they are under the combined reactions of tensile stress and specific environments. This phenomenon is called stress corrosion cracking (SCC)and very important from the standpoint of safe designing. Accordingly, we investigated SCC properties of bulk metallic glasses (BMGs)in NaCl solutions. It was found for the first time that Zr_<70> Cu_6Al_8Ni_<16> BMG showed no susceptibility to SCC. The mechanical properties for CuZr-and Ni-based BMGs were also examined at cryogenic temperature (77K). We obtained the new results in which the BMGs possess both high strength and improved plastic train at cryogenic temperatures.

一般来说，金属材料在拉伸应力和特定环境的共同作用下会发生脆性断裂。这种现象被称为应力腐蚀开裂（SCC），从安全设计的角度来看非常重要。因此，我们研究了块体金属玻璃（BMG）在NaCl溶液中的SCC性能。首次发现Zr_<70>Cu_6Al_8Ni_<16>BMG对SCC无敏感性。研究了CuZr基和Ni基非晶合金在低温（77K）下的力学性能。我们得到了新的结果，其中BMG具有高强度和改善的塑性列车在低温下。

项目成果

Low temperature dependence of elastic parameters and internal frictions of glassy alloy Cu45Zr45A15Ag5

玻璃合金Cu45Zr45A15Ag5弹性参数和内耗的低温依赖性

• 发表时间: 2008
• 期刊: Journal of Applied Physics 103
• 作者: 井手本康;飯山昂;M. Fukuhara
• 通讯作者: M. Fukuhara

Ni-based bulk glassy alloy with enhanced compressive strength and plasticity at cryogenic temperatures

在低温下具有增强的抗压强度和塑性的镍基大块非晶合金

• 发表时间: 2009
• 作者: A. Kawashima;Y. Q. Zeng;M. Fukuhara;H. Kurishita;N. Nishiyama;A. Inoue
• 通讯作者: A. Inoue

Ni-based bulk glassy alloy with enhanced strength and plasticity at cryogenic temperatures

在低温下具有增强强度和塑性的镍基大块非晶合金

• 发表时间: 2009
• 作者: A. Kawashima;Y. Q. Zeng;M. Fukuhara;H. Kurishita;N. Nishiyama;A. Inoue;井手本康;川嶋朝日
• 通讯作者: 川嶋朝日

Influences of temperature and strain rate on the mechanical behavior of Cu_<45> Zr_<45> Al_5Ag_5 bulk glassy alloy

温度和应变速率对Cu_<45>Zr_<45>Al_5Ag_5大块非晶合金力学行为的影响

• 发表时间: 2008
• 期刊: Mater. Trans.
• 作者: T. Okuno;A. Kawashima;H. Kurishita;W. Zhang;H. Kimura and A. Inoue
• 通讯作者: H. Kimura and A. Inoue

Mechanical behavior of Cu_<45> Zr_<45> Al_5Ag_5 bulk glassy alloy at cryogenic temperatures

Cu_<45>Zr_<45>Al_5Ag_5大块非晶合金低温力学行为

• 发表时间: 2008
• 作者: A. Kawashima;T. Okuno;H. Kurishita;M. Fukuhara;W. Zhang;H. Kimura;A. Inoue
• 通讯作者: A. Inoue