Study of nanoprecipitates in a nickel-based superalloy using small-angle neutron scattering and transmission electron microscopy

被引:32
|
作者
Huang, E-Wen [1 ]
Liaw, Peter K. [1 ]
Porcar, Lionel [2 ]
Liu, Yun [2 ]
Liu, Yee-Lang [3 ]
Kai, Ji-Jung [3 ]
Chen, Wei-Ren [4 ]
机构
[1] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA
[2] NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA
[3] Natl Tsing Hua Univ, Dept Engn & Syst Sci, Hsinchu 300, Taiwan
[4] Oak Ridge Natl Lab, Spallat Neutron Source, Neutron Scattering Sci Div, Oak Ridge, TN 37831 USA
基金
美国国家科学基金会;
关键词
D O I
10.1063/1.3002288
中图分类号
O59 [应用物理学];
学科分类号
摘要
Small-angle neutron scattering (SANS) experiments were performed on a Ni-based nanoprecipitate-strengthened superalloy. A theoretical model for SANS absolute intensity distribution I(Q) was presented to extract the structural properties. During the deformation process, a change in the morphology of precipitates was discovered. However, the average interprecipitate distance and the average volume of precipitates were found to remain invariant. This microstructural information resolved by SANS is in good agreement with the results obtained from the quantitative transmission-electron-microscopy image analysis. (C) 2008 American Institute of Physics. [DOI: 10.1063/1.3002288]
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页数:3
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