Transformations in Various Metals and Alloys Observed by Thermionic Emission Microscope. I : Titanium
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概要
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The α(close-packed hexagonal)→^^←β(body-centred cubic) transformation of titanium was observed by a thermionic emission microscope, the specimens in the form of a strip being directly heated by electric current and activated by (Ba, Sr)O. Surface striations observed onαgrains after cooling at high temperatures did not readily vanish by reheating at temperatures above the transformation point, and it took several hours before they became faint at 1, 000℃. This behaviour of the striations does not conflict with the interpretation by Williams et al. that they arise from the accommodation slip accompanying the transformation. The one to one correspondence seemed to be kept between α and β grains, when the transformation occurred through a slow change in temperature. But this was not so in the case of a rapid change in temperature, i.e., several orientations of striations were observed in an original β grain in the course of cooling.
- 東北大学の論文
著者
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Ogawa Shiro
The Research Institute For Iron Steel And Other Metals
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IKEDA Kenji
The Research Institute for Iron, Steel and Other Metals
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Ogawa Shiro
The Rcsearch Institute For Iron Steel And Other Metals Tohoku University
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Ikeda Kenji
The Research Institute For Iron Steel And Other Metals
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