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| DEPENDENCE OF HYDROGEN CONTENT ON HYDRIDE STRUCTURE AND YIELD STRENGTH OF TITANIUM PLATE |
| by WANG Ruikun; WANG Deming (Beijing General Research Institute of Non-ferrous Metals) |
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Cite this article:
by WANG Ruikun; WANG Deming (Beijing General Research Institute of Non-ferrous Metals). DEPENDENCE OF HYDROGEN CONTENT ON HYDRIDE STRUCTURE AND YIELD STRENGTH OF TITANIUM PLATE. Acta Metall Sin, 1986, 22(3): 21-148.
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Abstract The yield strength of the pure Ti plate may be decreased at 540—650℃ for specimen containing H within the range of 60 to 80 ppm, but it is decreased no more in increasing H. The sharp upper-lower yield point is occurred on the stressstrain curve as H content less than 50 ppm at room temperature and 540℃, and disappeared as H over 50 ppm or at 650℃. Thus, the maximum interaction energy between H atom and dislocation in pure Ti was calculated to be 0.47—0.53 eV. The morphology of hydride in pure Ti was observed in the plate or needle shape. The hydride TiH_2 was found to be the structure of BCT or fcc as H content less or more than 80 ppm respectively. It is also observed under HVEM that the hydride in specimen containing 15 ppm H is of BCT structure.
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Received: 18 March 1986
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1 #12．
2 #12．
3 Meyn, D.A., Hydrogen Damage, ASM, Metals Park, Ohio, 1977, p. 319．
4 Cottrell. A. H., 晶体的位错和范性流变,葛庭燧译,科学出版社,1960,p.148．
5 Heady, R.B., Corrosion, 9 (1978) , 303．
6 Hirsch, P.B.; Homwie, A.; Nickolson, R.B.; Pashley, D.W.; Whelan, M.J., Electron Microscopy of Thin Crystals, Butterworths, London, 1971, p. 325．T |
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