FABRICATION OF TIAL MATRIX COMPOSITE SHEETES WITH CONTROLLED MICRO-LAMINATED ARCHITECTURE BY A SOLID-LIQUID REACTION

被引：0

作者：

Cui, X. P. ^{[1
]}

Geng, L. ^{[1
]}

Fan, G. H. ^{[1
]}

Wu, H. ^{[1
]}

Wang, X. F. ^{[1
]}

Meng, S. H. ^{[2
]}

机构：

[1] Harbin Inst Technol, Sch Mat Sci & Engn, POB 433, Harbin 150001, Peoples R China

[2] Harbin Inst Technol, Sch Astronaut, Ctr Composite Mat, Harbin 150080, Peoples R China

来源：

20TH INTERNATIONAL CONFERENCE ON COMPOSITE MATERIALS | 2015年

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Titanium aluminide matrix composite; Reaction annealing; Layered structures; Mechanical properties; ALLOY; REFINEMENT; BEHAVIOR; GROWTH; LAYER;

D O I：

暂无

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

A feasible method has been successfully developed to manufacture fully dense TiAl matrix composite sheets with unique multi-layered architecture by employing multi-step reaction annealing of the hot-pressed (TiB/Ti)-Al laminates. The TiAl matrix composites displayed a novel layered structure, composing of alternating layers of equiaxed gamma-TiAl layer, fully lamellar alpha(2)-Ti3Al/gamma-TiAl layer and TiB-rich layer which was actually TiB whisker stacking layer. It is worth pointing out that the multi-layered composites showed the enhanced high-temperature tensile properties, in particular for 750 degrees C, the yield strength (alpha(y)) was much higher than that of monolithic TiAl prepared by the reaction annealing of Ti-Al laminates. Consequently, the unique micro-laminated TiB2-TiAl composite sheets have potential for light-weight high-temperature structural application.

引用

页数：7

共 32 条

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