Intrinsic Deformation Resistance of Interface. New Interface Structure Properties Deduced by Micropillar Deformation

界面的固有变形阻力。

• 批准号: 23656429
• 负责人: INUI Haruyuki
• 金额: $ 2.66万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 无数据
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23656429/
• 关键词: 界面変形抵抗; 弾性拘束応力; 粒内転位源; 歪適合性; マイクロピラー; 試験片サイズ依存性; 降伏応力; 転位

With the use of a two-phase TiAl/Ti3Al lamellar alloy, the'intrinsic' interface resistance against the passage of deformation, which is termed"intrinsic deformation resistance of interface"has been investigated by conducting micropillar compression tests as a function of specimen size. The micropillar specimen usually contains a twin boundary parallel to the compression axis in the middle of specimen. The deduction of"intrinsic deformation resistance of interface"was made through the size dependence of the yield stress difference between specimens of the same size with and without a twin boundary. The magnitude of"intrinsic deformation resistance of interface"is proved to be basically determined by the incompatibility among the operative deformation modes across the twin boundary and to be determined only with the specimen whose size is belowμm.

采用微柱压缩试验研究了TiAl/Ti 3Al双相层状合金的“本征”界面变形抗力随试样尺寸的变化规律。微柱试样通常在试样中部含有平行于压缩轴的孪晶界面。通过对相同尺寸试样的屈服应力差的尺寸依赖性，推导出了“界面内禀变形抗力”。证明了“界面内禀变形阻力“的大小基本上取决于孪晶界上各变形模式之间的不相容性，且只能用μm以下的试样来确定。

项目成果

Compression of Micropillars of TiAl Coexisting with Ti 3 Al

与Ti 3 Al共存的TiAl微柱的压缩

• 发表时间: 2011
• 作者: Kazuki Fujimura;K. Kishida;Katsushi Tanaka;H. Inui
• 通讯作者: H. Inui

Enrichment of Gdand Al Atoms in the Quadruple Close-Packed Planes and Their In-Plane Long-Range Orderingin the LPSO Phase in the Mg-Al-Gd System

Mg-Al-Gd 体系中 LPSO 相中 Gd 和 Al 原子在四重密排面的富集及其面内长程有序化

• 发表时间: 2011
• 期刊: Acta Materialia
• 影响因子: 9.4
• 作者: H. Yokobayashi;K. Kishida;H. Inui;M. Yamazaki and Y. Kawamura
• 通讯作者: M. Yamazaki and Y. Kawamura

Temperature Dependence of Yield Stress and Dislocation Dissociation in L12-Ordered Intermetallic Compounds

L12 有序金属间化合物中屈服应力和位错解离的温度依赖性

• 发表时间: 2011
• 作者: K. Oda;Y. Mikami and M. Mochizuki;Hanawa T;H. Inui
• 通讯作者: H. Inui

Temperature Dependence of Yield Stress and Dislocation Dissodation in L1_2-Ordered Intermetallic Compounds

L1_2 有序金属间化合物屈服应力和位错解离的温度依赖性

• 发表时间: 2011
• 作者: 小田和生;三上欣希;望月正人;H.Inui
• 通讯作者: H.Inui

Plastic Deformation of Polycrystals of Co3(Al, W) with the L12 Structures

L12结构Co3(Al,W)多晶的塑性变形

• 发表时间: 2011
• 期刊: Philosophical Magazine
• 影响因子: 1.6
• 作者: N. L. Okamoto;T. Oohashi;H. Adachi;K. Kishida;H. Inui and P. Veyssiere
• 通讯作者: H. Inui and P. Veyssiere