Effect of Solid Solution Treatment on Microstructure of Fe-Ni Based High Strength Low Thermal Expansion Alloy |
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Authors: | ZHANG Jian-fu TU Yi-fan XU Jin ZHANG Jian-sheng ZHANG Jing-lin |
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Affiliation: | 1. Central Iron and Steel Research Institute, Beijing 100081, China 2. University of Science and Technology Beijing, Beijing 100083,China |
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Abstract: | The influence of solid solution treatments on the dissolution of carbides precipitates, the grain size, and the hardness of high strength low expansion alloy were investigated through XRD analysis, microstructure observations, and theoretical computation. It was seen that most primary Mo2C type carbide band dissolved in a temperature range of 1 100-1 150 ℃. When the temperature was over 1 200 ℃, the grain size increased remarkably, which led to the reduction of hardness. |
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Keywords: | high strength low expansion alloy solid solution temperature microstructure carbide dissolution |
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