大尺寸TiAl/Ti<sub>3</sub>Al微叠层薄板制备与热稳定性研究

doi:10.11901/1005.3093.2014.042

材料研究学报

2014, Vol. 28

Issue (4): 314-320 DOI: 10.11901/1005.3093.2014.042

本期目录 | 过刊浏览

大尺寸TiAl/Ti₃Al微叠层薄板制备与热稳定性研究

申造宇,黄光宏,何利民(

),牟仁德,常振东

北京航空材料研究院北京 100095

Preparation and Thermal Stability of Large-sized TiAl/Ti₃Al Micro-laminated Thin Sheets

Zaoyu SHEN,Guanghong HUANG,Limin HE(

),Rende MU,Zhendong CHANG

Beijing Institute of Aeronautical Materials, Beijing 100095

引用本文:

申造宇,黄光宏,何利民,牟仁德,常振东. 大尺寸TiAl/Ti₃Al微叠层薄板制备与热稳定性研究[J]. 材料研究学报, 2014, 28(4): 314-320.
Zaoyu SHEN, Guanghong HUANG, Limin HE, Rende MU, Zhendong CHANG. Preparation and Thermal Stability of Large-sized TiAl/Ti₃Al Micro-laminated Thin Sheets[J]. Chinese Journal of Materials Research, 2014, 28(4): 314-320.

全文: PDF(3957 KB) HTML

摘要:

采用大功率电子束物理气相沉积(EB-PVD)制备了厚度为0.1-10 mm大尺寸薄板TiAl/Ti₃Al叠层状复合材料。利用XRD和SEM对材料的组成相和微观结构进行了分析。实验结果表明: 材料由α₂-Ti₃Al和γ-TiAl相组成, 具有明显的层状结构, TiAl晶粒平均尺寸为1-2 µm。通过真空热处理的方法考察了微叠层材料的在不同温度下保温3 h后的结构演变, 并研究了微叠层材料层状结构的退化机理。

关键词 ：复合材料, 电子束物理气相沉积, TiAl/Ti₃Al微叠层, 微观结构, 热稳定性

Abstract：

Large-sized TiAl/Ti₃Al micro-laminated composite thin sheet with thickness of 0.1-10 mm was prepared by high-powerful electron beam physical vapor deposition technology in laboratory. The composition and microstructure of TiAl/Ti₃Al were chacterized by XRD and SEM. The results indicated that the prepared material with visible lamellar structure was alternately composed of α₂-Ti₃Al and γ-TiAl phase and the mean grain size of TiAl was about 1-2 µm. The degradation process was also investigated by high temperature annealing at various temperatures for 3 h.

Key words： composite materials EB-PVD microlaminate microstructure thermal stability

收稿日期: 2014-01-17

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https://www.cjmr.org/CN/10.11901/1005.3093.2014.042 或 https://www.cjmr.org/CN/Y2014/V28/I4/314

图1 TiAl和Ti3Al单层材料的XRD谱图

图2 TiAl/Ti3Al微叠层复合材料的XRD图谱

图3 沉积态TiAl/Ti3Al微叠层复合材料的表面及截面的SEM像

图4 Ti3Al/TiAl微叠层的EDS分析

图5 不同退火温度退火3 h的TiAl/Ti3Al微叠层复合材料的XRD图谱 (RT-原始试样)

图6 不同温度真空退火保温3 h后的TiAl/Ti3Al微叠层材料的截面形貌

图7 叠层材料界面融混示意图

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