Microstructure and mechanical properties of TiC0.5 reinforced copper matrix composites

作者：Li Mengqi; Zhai Hongxiang^*; Huang Zhenying; Liu Xiaohan; Zhou Yang; Li Shibo; Li Cuiwei

来源：Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 2013, 588: 335-339.

DOI：10.1016/j.msea.2013.09.054

• TiC0.5
• Ti2AlC
• Sintering
• Cu-Al matrix composites
• Compression test

Cu-Al alloy matrix composites containing in-situ TiC0.5 particles were fabricated by sintering of a mixture of Cu and Ti2AlC powders at 1150 degrees C for 60 min in Ar atmosphere. The micron-sized Ti2AlC particles were decomposed into submicron TiC0.5 grains during the sintering process, meanwhile, Al atoms entered into Cu to form Cu-Al alloy matrix. It was shown that the Cu-Al alloy matrix also consisted of ultrafine grains. Compression tests indicate TiC0.5 particles can improve mechanical properties significantly, and the ductility maintains at a comparatively high level. The fracture strength of 40Ti(2)AlC/Cu sample reaches 1126 MPa with 12.8% fracture strain. The 20Ti(2)AlC/Cu and 30Ti(2)AlC/Cu samples keep undamaged even after the strain of 26.7%.

• 出版日期2013-12-20
• 单位北京交通大学