The Influence of Hydrogen on Hot Deformability of Titanium Alloys with Different Phase Compositions
In a number of papers (1–4) it was established that an addition of hydrogen to titanium alloys increased their plasticity and reduced resistance to deformation in hot forming processes. The favorable effect of hydrogen on deformability of titanium alloys depends upon their phase composition. This paper deals with the results of high temperature tensile tests and resistance to cracking in compression tests of VT1-0 titanium and its VT3-1, Ti9A1 and ST5 alloys with hydrogen content from 0.004 wt% (vacuum annealed) up to 0.6 wt%. VT1-0 titanium and VT3-1 alloy in the form of forged rods 20 by 20mm and Ti9A1 and ST5 alloys in the as-cast state were used for the study.
KeywordsTitanium Alloy Compression Test Hydrogen Content Ti9Al Alloy Threshold Reduction
Unable to display preview. Download preview PDF.
- 1.Zwicker, U. and Walter, G., The USA patent, No. 2892742, cl. 148–11, 5.Google Scholar
- 2.Kolachev, B. A., Nosov, V. K., Livanov, V. A. et al, On the effect of hydrogen on the process plasticity of the Ti9A1 alloy. “Izvest. Vuz’ov.” Non-ferrous Metallurgy, 1972, No. 4, 137–142.Google Scholar
- 3.Kolachev, B. A., Livanov, V. A., Nosov, V. K. et al, About the favorable hydrogen effect on the deformability of ST4-titanium alloy. “Kuznechnoshtampov. Proiz. (in Russian), 1975, No. 1, 29–32.Google Scholar
- 4.Kolachev, B. A., Nosov, V. K., Shchipunov, G. I. and Fainbron, S. M., On high temperature tooth of creep in titanium alloys with intermetallic strengthening, “Fizika metallov i metalloved,” 1975, v. 39, p. 611–616.Google Scholar
- 5.Nartova, T. T., Some problems of physical and chemical theory of high-temperature strengthening and new refractory titanium alloys ST-1; ST-3; St-4 and ST-5, in Titanium Alloys in New Technique, Moskva, Nauka, 1968, p. 176–186.Google Scholar