高温におけるその場観察のための直視型高温変形挙動観察装置の試作

概要

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Recently, it is strongly demanded to develop a tester which makes possible to in situ observe the microstructures deformed in the wide temperature range from room temperature to high temperatures. Both Mechanical Engineering Laboratory, Agency of Industrial Science and Technology and Shimadzu Co. have produced such a tester, where a hydraulic machine with a vacuum chamber and a heater is equipped with a scanning electron microscopy. Mod. IN-100, a slightly modified version of IN-100 which has specific points (i.e. transformation and recrystallization temperatures etc.) at high temperatures has been prepared, and in situ observed in the temperature range from room temperature to 1323 K using an upper type furnace in installation of trapping the thermal electron. Good scanning electron microstructures have been observed up to 1306 K in both scanning and television mode. Beyond 1306 K, however, it is difficult to bring its target into focus, because an amount of the detected second electron decreases in using the furnace mentioned above. In television mode, especially, the microstructures are slightly seen.
社団法人日本鉄鋼協会の論文
1991-05-01