Study of microstructure of nickel-based superalloys at high temperatures

详细信息    查看全文

• 作者：Qinghua Zhang^a ; Yunjie Chang^a ; Lin Gu^a ; Yushi Luo^b ; Binghui Ge^a ; ^{Bhge@iphy.ac.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Superalloys ; In-situ heating TEM ; Surface reconstruction ; Interface
• 刊名：Scripta Materialia
• 出版年：2017
• 出版时间：1 January 2017
• 年：2017
• 卷：126
• 期：Complete
• 页码：55-57
• 全文大小：777 K

文摘

Nickel-based superalloys are widely used as high temperature materials for turbine blades in aerospace industry and land-based applications. Their structural characterization, however, is mostly carried out at the room temperature. Here, the microstructure of the superalloys was studied at high temperature, 1000 °C, through aberration-corrected scanning transmission electron microscope imaging. It is the first time that both evaporation and reconstruction of alloying elements were observed with the atomic resolution at the high temperature.