| TiAl的室温氢致滞后断裂 |
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| 引用本文： | 高克玮,王燕斌,褚武扬. TiAl的室温氢致滞后断裂[J]. 金属学报, 1996, 32(1): 29-32 |
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| 作者姓名： | 高克玮 王燕斌 褚武扬 |
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| 作者单位： | 北京科技大学 |
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| 摘 要： | TiAl镀Ni-P后可避免阴极腐蚀，氢化物饱和的试样平面应力断裂韧性Kc(H)比空与中的Kc值低约20％，含饱和氢化物试样动态充氢时能发生滞后断裂，这是原子氢引起的，氢致滞后断裂门槛值KIH和Kc(H)的比值约为0．7。
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| 关 键 词： | TiAl合金 氢化物 氢致滞后断裂 阴极腐蚀 断裂韧性 钛铝合金 表面镀 Ni-P层 室温 |
| 收稿时间： | 1996-01-18 |
| 修稿时间： | 1996-01-18 |
HYDROGEN INDUCED DELAYED FRACTURE OF TiAl ALLOY AT ROOM TEMPERATURE |
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| GAO Kewei,WANG Yanbin,CHU Wuyang. HYDROGEN INDUCED DELAYED FRACTURE OF TiAl ALLOY AT ROOM TEMPERATURE[J]. Acta Metallurgica Sinica, 1996, 32(1): 29-32 |
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| Authors: | GAO Kewei WANG Yanbin CHU Wuyang |
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| Abstract: | A Ni-P plated TiAl alloy specimen may protect the cathodic corrosion. The fracture toughness of TiAl alloy specimen saturated with hydride, KC(H), is less than that in air, Kc . Atomic hydrogen could induce the delayed failure of the specimen saturated hydride during dynamically charging with hydrogen. The ratio, KIH/ KC (H), of the critical stress intensity for hydrogen induced delayed failure is about 0.7. |
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| Keywords: | TiAl alloy hydride hydrogen induced delayed fracture |
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