Yifan Tu, Jin Xu, Jianfu Zhang, Boping Zhang, and Dongliang Zhao, Effect of solid-solution temperature on the microstructure of Fe-Ni based high strength low thermal expansion (HSLTE) alloy, J. Univ. Sci. Technol. Beijing, 14(2007), No. 1, pp. 46-51. https://doi.org/10.1016/S1005-8850(07)60010-3
Cite this article as:
Yifan Tu, Jin Xu, Jianfu Zhang, Boping Zhang, and Dongliang Zhao, Effect of solid-solution temperature on the microstructure of Fe-Ni based high strength low thermal expansion (HSLTE) alloy, J. Univ. Sci. Technol. Beijing, 14(2007), No. 1, pp. 46-51. https://doi.org/10.1016/S1005-8850(07)60010-3
Yifan Tu, Jin Xu, Jianfu Zhang, Boping Zhang, and Dongliang Zhao, Effect of solid-solution temperature on the microstructure of Fe-Ni based high strength low thermal expansion (HSLTE) alloy, J. Univ. Sci. Technol. Beijing, 14(2007), No. 1, pp. 46-51. https://doi.org/10.1016/S1005-8850(07)60010-3
Citation:
Yifan Tu, Jin Xu, Jianfu Zhang, Boping Zhang, and Dongliang Zhao, Effect of solid-solution temperature on the microstructure of Fe-Ni based high strength low thermal expansion (HSLTE) alloy, J. Univ. Sci. Technol. Beijing, 14(2007), No. 1, pp. 46-51. https://doi.org/10.1016/S1005-8850(07)60010-3
The influence of solid-solution temperature on the dissolution of carbide precipitates, the average grain size and the microhardness of the austenite matrix in an Fe-Ni based high strength low thermal expansion (HSLTE) alloy was investigated to obtain the proper temperature range of the solid-solution process. The XRD analysis, microstructure observations, and the theoretical calculations showed that the Mo-rich M2C-type precipitates in the Fe-Ni based HSLTE alloy dissolve completely at about 1100℃. The average grain size of the studied alloys increases from 14 to 46 μm in the temperature range of 1050 to 1200℃. The microhardness of the matrix decreases gust for the sake of solid-solution treatment, but then increases later with increasing solution temperature because of the solution strengthening effect.
The influence of solid-solution temperature on the dissolution of carbide precipitates, the average grain size and the microhardness of the austenite matrix in an Fe-Ni based high strength low thermal expansion (HSLTE) alloy was investigated to obtain the proper temperature range of the solid-solution process. The XRD analysis, microstructure observations, and the theoretical calculations showed that the Mo-rich M2C-type precipitates in the Fe-Ni based HSLTE alloy dissolve completely at about 1100℃. The average grain size of the studied alloys increases from 14 to 46 μm in the temperature range of 1050 to 1200℃. The microhardness of the matrix decreases gust for the sake of solid-solution treatment, but then increases later with increasing solution temperature because of the solution strengthening effect.
下载: