期刊
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
卷 528, 期 28, 页码 8145-8149出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2011.07.062
关键词
Twin; Cobalt; Phase transformation
类别
资金
- National Natural Science Foundation of China [51071183, 50890170]
- Major State Basic Research Development Program of China [2010CB631004]
The microstructure of a polycrystalline Co annealed at 873 K, followed by furnace cooling to room temperature, was studied in this paper. It was found that a small amount of high temperature (above 690 K) face centered cubic (FCC) phase is retained after the slow cooling, and there is a Shoji-Nishiyama orientation relationship between the low temperature hexagonal close packed (HCP) and the retained FCC phases. Annealing twins were observed not only in FCC phase but also in HCP phase. A high fraction of special misorientation, 71.4 degrees/(1 (2) over bar 10), was identified in the HCP phase, which was correlated to the phase transformation twins. (C) 2011 Elsevier B.V. All rights reserved.
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