| Hydrogen-induced hot workability in Ti-6Al-4V alloy |
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| 作者姓名： | 宗影影 单德彬 吕炎 郭斌 |
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| 作者单位： | School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China |
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| 摘 要： | The effect of hydrogen on hot deformability of Ti-6Al-4V alloy was investigated by isothermal hot compression test with temperature of 800 ℃ and velocity of 0.1 mm/s. By optical microscopy （OM） and transmission electron microscopy （TEM）, the influence of hydrogen on the microstructural features was systematically examined including the morphology of a grain, volume fraction of a phase and dynamic recrystallization （DRX）. The flow stress shows an initial decrease but a later increase with the increase of hydrogen content. The minimum of peak compression flow stress is obtained when 0.2% hydrogen is added into the alloy. The hydrogen-induced softening of Ti-6Al-4V alloy may be that hydrogen induces the increase of proportion of soft β phase, the increase of DRX and the increase of extent of twins.
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| 关 键 词： | 钛合金 氢 可加工性 变形性 再结晶作用 |
| 收稿时间： | 2006-07-28 |
| 修稿时间： | 2006-09-15 |
Hydrogen-induced hot workability in Ti-6Al-4V alloy |
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| ZONG Ying-ying, SHAN De-bin , LU Yan, GUO Bin.Hydrogen-induced hot workability in Ti-6Al-4V alloy[J].Transactions of Nonferrous Metals Society of China,2006,16(A03):2072-2076. |
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| Authors: | ZONG Ying-ying SHAN De-bin LU Yan GUO Bin |
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