Synthesis and properties of a Cu–Ti–TiB2 composite hardened by multiple mechanisms
Synthesis and properties of a Cu–Ti–TiB2 composite hardened by multiple mechanisms
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DOI：
10.1016/j.msea.2011.07.061
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发表时间：
2011-10
期刊：
影响因子：
6.4
通讯作者：
D. Božić;J. Stašić;J. Ružić;M. Vilotijević;V. Rajkovic
中科院分区：
文献类型：
--
作者：
D. Božić;J. Stašić;J. Ružić;M. Vilotijević;V. Rajkovic
提出并讨论了铜基体的多种硬化机制。气体雾化Cu-0.6wt. % Ti-2.5wt。以%TiB2（Cu-Ti-TiB2）粉末为起始原料。气体雾化过程中，分散颗粒tib2在铜基体中原位形成。粉末已被热等静压（HIP）固结。采用光学显微镜、透射电镜（TEM）和x射线衍射（XRD）分析了粉末和复合材料的微观结构特征。时效后cu - ti - tib2复合材料的高硬化是以下因素同时影响的结果：具有亚稳Cu4Ti(m)颗粒的调制结构的发展和原位形成的tib2分散颗粒。
Multiple hardening mechanisms of a copper matrix have been presented and discussed. The gas atomized Cu–0.6wt.%Ti–2.5wt.%TiB2(Cu–Ti–TiB2) powders were used as starting materials. Dispersoid particles TiB2were formed in situ in the copper matrix during gas atomization. The powders have been consolidated by hot isostatic pressing (HIP). Optical microscopy, transmission electron microscopy (TEM), and X-ray diffraction (XRD) analysis were performed for microstructural characterization of powders and composite compacts. High hardening of the Cu–Ti–TiB2composite achieved by aging is a consequence of the simultaneous influence of the following factors: the development of modulated structure with metastable Cu4Ti(m)particles and in situ formed TiB2dispersoid particles.