期刊
SCRIPTA MATERIALIA
卷 140, 期 -, 页码 9-12出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2017.06.033
关键词
FCC titanium; In situ TEM; Nano-mechanical testing
类别
资金
- US Office of Naval Research [N00014-12-1-0413]
- Austrian Science Fund (FWF) [J3397]
- U.S. Department of Energy [DE-AC52-07NA27344]
- Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy [DE-AC02-05CH11231]
- 111 project [B16042]
- National Natural Science Foundation of China [51671168]
- State Key Program for Basic Research in China [2015CB65930]
- Chinese 1000-Youth-Talent Plan
- Austrian Science Fund (FWF) [J3397] Funding Source: Austrian Science Fund (FWF)
Pure Ti traditionally exhibits the hexagonal closed packed (HCP) crystallographic structure under ambient conditions and the body centered cubic (BCC) structure at elevated temperatures. In addition to these typical structures for Ti alloys, the presence of a face centered cubic (FCC) phase associated with thin films, interfaces, or high levels of plastic deformation has occasionally been reported. Here we show that small FCC precipitates form in freestanding thin foils during in situ transmission electron microscope (TEM) heating and we discuss the potential origins of the FCC phase in light of the in situ observations. This FCC phase was found to be stable upon cooling and under ambient conditions, which allowed us to explore its mechanical properties and stability via nanome-chanical in situ TEM testing. It was found that FCC platelets within the HCP matrix phase were stable under mechanical deformation and exhibited similar mechanical deformation behavior as the parent HCP phase. (C) 2017 Acta Materialia Inc Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据