ON THE THERMO-ELECTRO MOTIVE FORCE OF MAGNESIUM AT THE RECRYSTALLIZATION TEMPERATURE
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Thermo ouples were made by deformed Mg rod and annealed Mg rod, and were heated at one junctions, and the crystal recovery and the recrystallization phenomena were researched by measuring the change of the value of the thermo-electro motive force, hardness value, and X-rays analysis.1. The more increased degree of deformation, the more the value of the thermo-electro motive forces2. In each curves of the thermo-electro motive force, two crooks (abnormal changes) were recognized. And on the first crook, the temperature range of crook was 120°C-250°C and on the second, it was about 200°C-300°C.3. Till the beginning of the first crook, the curves arose straight as the temperature arose and were reversible to temperature, and after the begining of it, the curves were irreversiable to temperature.4. By X-rays analysis, recrystallization spots were recognized at 200°C and that temperature was the same as that of the beginning of the second crook of curve of the thermo-electro notive force.5. In the curve of the change of hardness, softening was noticeable at the temperature at which the crook began.So the first crook of curve of the thermo-electro motive force was caused by the crystal recovery and the second of it was by the recrystallization. Further the temperature ranges of the recovery and the recrystallization were researched.
- 一般社団法人 軽金属学会の論文
一般社団法人 軽金属学会 | 論文
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