| 氢对TC4钛合金电子束焊接头疲劳裂纹扩展速率的影响 |
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| 引用本文： | 刘鹏涛,赵秀娟,刘昕,齐健,陈春焕,王亚军,任瑞铭.氢对TC4钛合金电子束焊接头疲劳裂纹扩展速率的影响[J].航空材料学报,2011,31(3):52-55. |
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| 作者姓名： | 刘鹏涛 赵秀娟 刘昕 齐健 陈春焕 王亚军 任瑞铭 |
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| 作者单位： | 1. 大连交通大学,材料科学与工程学院,辽宁,大连,116028
2. 北京航空制造工程研究所,北京,100024 |
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| 摘 要： | 采用充氢CT试样对TC4钛合金电子束焊接头的室温疲劳裂纹扩展速率进行了测定,并对试样断口和接头各区显微组织进行了观察.试验结果表明:充氢母材试样在低速扩展区和失稳扩展区的da/dN相对于未充氢试样有明显的提高,但不同氢含量之间差别不大,在稳态扩展区(Paris区),氢对da/dN的影响很小.充氢焊缝试样在整个裂纹扩展过...
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| 关 键 词： | 氢 TC4钛合金 电子束焊 疲劳裂纹扩展速率 断口 |
Effects of Hydrogen on Fatigue Crack Propagation Rate of TC4 Alloy Electron Beam Welded Joint |
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| LIU Peng-tao,ZHAO Xiu-juan,LIU Xin,QI Jian,CHEN Chun-huan,WANG Ya-jun,REN Rui-ming.Effects of Hydrogen on Fatigue Crack Propagation Rate of TC4 Alloy Electron Beam Welded Joint[J].Journal of Aeronautical Materials,2011,31(3):52-55. |
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| Authors: | LIU Peng-tao ZHAO Xiu-juan LIU Xin QI Jian CHEN Chun-huan WANG Ya-jun REN Rui-ming |
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| Institution: | LIU Peng-tao1,ZHAO Xiu-juan1,LIU Xin2,QI Jian1,CHEN Chun-huan1,WANG Ya-jun2,REN Rui-ming1(1.College of Materials Science and Engineering,Dalian Jiaotong University,Dalian 116028,Liaoning China,2..Beijing Aeronautical Manufacturing Technology Research Institute,Beijing 100024,China) |
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| Abstract: | The hydrogenated CT specimens were adopted to measure the fatigue crack propagation rate(da/dN) of TC4 alloy electron beam welded joints at room temperature,and the fracture surface morphologies of specimens as well as the microstructures of joints were observed.The results indicated that the da/dN of hydrogenated base metal specimens were higher than the non-hydrogenated ones in near-threshold stage and rapid rupture stage,but the specimens with various hydrogen contents were little differed from each othe... |
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| Keywords: | hydrogen TC4 alloy electron beam welding fatigue crack propagation rate fracture morphology |
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