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| SNOEK-KSTER RELAXATION IN Ta-O |
| LI Guangyi;PAN Zhengliang Institute of Metal Research;Academia Sinica;Shenyang;ZHANG Jinxiu Department of Physics;Sun Yat-sen University;Guangzhou |
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Cite this article:
LI Guangyi;PAN Zhengliang Institute of Metal Research;Academia Sinica;Shenyang;ZHANG Jinxiu Department of Physics;Sun Yat-sen University;Guangzhou. SNOEK-KSTER RELAXATION IN Ta-O. Acta Metall Sin, 1985, 21(1): 25-33.
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Abstract The Snoek-Kster relaxation processes in oxygen-doped high purity polycrys-talline Ta after plastic deformation were investigated.It was shown that there arefour distinct types of Snoek-Kster relaxation,namely,SK-1 and SK-2 occurringin lower oxygen concentration,i.e.,unsaturated interstitial atmosphere,as sameas peak(1)and(2)in the previous work by the authors;SK-4 in high oxygenconcentration,i.e.,saturated atmosphere and SK-5 in lower oxygen concentration,i.e.,unsaturated atmosphere.The activation parameters of these relaxations weredetermined.As the increasing of the annealing temperature and oxygen content,the gradual transition from SK-5 into SK-4 relaxation can be observed.All relax-ation processes other than SK-1 are stable on annealing.A comparison of resultsbetween previous works and this study was also made.
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Received: 18 January 1985
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