Thermal stability of in situ synthesized (TiB + La2O3)/Ti composite
Thermal stability of in situ synthesized (TiB + La2O3)/Ti composite
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DOI：
10.1016/j.msea.2011.03.018
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发表时间：
2011-06-15
期刊：
影响因子：
6.4
通讯作者：
Zhang, Di
中科院分区：
文献类型：
--
作者：
Li, Jiuxiao;Wang, Liqiang;Zhang, Di
研究了原位合成的(TiB+La2O3)/Ti复合材料的热稳定性。通过X射线衍射鉴定物相分析。通过光学显微镜（OM）、扫描电子显微镜（SEM）和透射电子显微镜（TEM）对热处理后熔融锻造的钛基复合材料（TMC）的微观结构进行表征。测试在 873K、923K 或 973K 下额外热暴露 100 小时后的室温拉伸性能。热暴露后，试样的强度增加，延展性下降。这是由于热暴露后钛基复合材料中有序 α(2) 相 (Ti3Al) 和 S-1（硅化物）的沉淀所致。 (C) 2011 Elsevier B.V. 保留所有权利。
Thermal stability of in situ synthesized (TiB + La2O3)/Ti composite is investigated. The phase analysis is identified by X-ray diffraction. Microstructure of the melted and forged titanium matrix composites (TMCs) after heat treatment is characterized by means of optical microscopy (OM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The room temperature tensile properties after an additional thermal exposure at 873K, 923 K or 973 K for 100 h are tested. After the thermal exposure, the strength of specimen increases and ductility decreases. This is attributed to precipitation of ordered alpha(2) phase (Ti3Al) and S-1 (silicide) in the titanium matrix composites after the thermal exposure. (C) 2011 Elsevier B.V. All rights reserved.