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| REDISTRIBUTION OF HYDROGEN IN Ti ALLOY Ti-5A1-4V STRESSED INHOMOGENEOUSLY AND ITS EFFECT ON FRACTURE PROPERTIES |
| HUANG Xianya; ZHU Zufang (General Research Institute of Non-Ferrous Metals; Ministry of Metallurgical Industry; Beijing); XIAO Jimei (Hsiao Chi-mei) (Belling University of Iron and Steel Technology) (Manuscript received 18 April; 1983) |
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Cite this article:
HUANG Xianya; ZHU Zufang (General Research Institute of Non-Ferrous Metals; Ministry of Metallurgical Industry; Beijing); XIAO Jimei (Hsiao Chi-mei) (Belling University of Iron and Steel Technology) (Manuscript received 18 April; 1983). REDISTRIBUTION OF HYDROGEN IN Ti ALLOY Ti-5A1-4V STRESSED INHOMOGENEOUSLY AND ITS EFFECT ON FRACTURE PROPERTIES. Acta Metall Sin, 1984, 20(3): 182-288.
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Abstract Hydrogen was introduced into the region 13 mm beyond the crack tip of a modified WOL specimen of Ti alloy Ti-SAl-4V. The delay cracking was growing up in the specimen about 20 months later. The results of an ion probe microanalysis showed that the hydrogen concentration coefficient at the maximum of triaxial stress in the front of crack tip is much greater than the theoretical value exp((?)_Hσ_h/RT) predicted by thermodynamics. Observations by metallography and TEM proved that the titanium hydrides of fct and fcc lattice precipitate at α/β interphase boundaries and interfaces between a facets, The delay cracking takes place just along these interfaces. An analysis by fracture mechanics indicates that K_(IH)≤0.46K_(IC). Based upon the above mentioned experimental results, discussions were made on the extent of the hydrogen redistribution in Ti alloy under a stress gradient, on the kinetic feature of this process, as well as on the possible causes of falsity in similar experiments.
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Received: 18 March 1984
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1 Li, J.C.; Oriani, R.A.; Darken, S., Z. Phys. Chem., 49 (1966) , 18．
2 Wriedt, H.A.; Oriani, R.A., Acta Metall., 18 (1970) , 753．
3 Bockris, J. O M.; Beck, W.; Genshaw, M.A.; Subramanyan, P. K.; Williams, F. S., Acta Metall., 19 (1971) , 1209．
4 Adler, P.N.; Schulte, R.L., Scr. Metall., 13 (1978) , 669．
5 Adler, P.N.; Schulte, R.L.; Schneid, E.J.; Kamykowski, E.A.; Kuehne, F.J., Metall. Trans., 11A (1980) , 1617．
6 Oriani, R.A., Ber. Bunsenges. Phys. Chem., 76 (1972) , 848．
7 Marichev, V. A., Metallic Corrosion, Proc. of 8th Int. Cong. on Metallic Corrosion, Published by DECHEMA, Mainz, 1981, p. 579．
8 Novak, S.R.; Rolft, S, T., J. Mater., 4 (1969) , 701．
9 褚武扬;林实;王枨;田中卓,断裂韧性测试,科学出版社,1979,p.76．
10 Nelson, H.G.; Williams, D.P.; Stein, J.E., Metall. Trans., 3 (1972) , 469．
11 Waisman, J.L.; Sines, G.; Robinson, L.B., Metall. Trans., 4 (1973) , 291．
12 Flanagan, T. B,; Lynch, J.F.; Clewley, J.D.; Turkovich, B.V., J. Less-Common Met.,,19 (1976) , 13．
13 Williams, J.C., Effect of Hydrogen on Behavior of Materials, Eds. Thompson, W.; Bernstein, I.M, Metall. Soc. AIME, 1976, p.367．
14 Wipf, H., Hydrogen in Metal Ⅱ, Eds. Alefcld, G; Voelkl, J., New York, 1978, pp.273-304．
15 黄显亚;朱祖芳;王得明;肖纪美,中国腐蚀与防护学报,2(1982) ,№4,p.37．
16 Lin Le-yun; Huang Xian-ya; Li Ya-kun; Hsiao, Chi-mci, Scr. Metall 16 (1982) , 1387．
17 Beck, W.; Bockris, J. O'M.; McBreen, J.; Nanis, L., Proc. R. Soc. (London), Ser. A, 290 (1966) , 220．
18 Hsiao Chi-mei; Huang Xian-ya; Wan De-ming; Zhu Zu-fang, Metallic Corrosion, Proc. of 8th Int. Cong. on Metallic Corrosion, Published by DECHEMA, Mainz, 1981, p. 594．
19 Takano, S.; Suzuki, T., Acta Metall., 22 (1974) , 265．
20 Hall, I. W.; Hammond, C., Met. Sci., 12 (1978) , 339． |
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