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| Influences of Solution Hydrogen on the Fatigue Crack Propagation Lives of TA15 Alloys Electron Beam Welded Joints |
| JI Longbo1, HU Shubing1, CHEN Jiyan1, WANG Yajun2, LI Xingzhi1, XIAO Jianzhong1 |
1.State Key Laboratory of Material Processing and Die $\&$ Mould Technology, Huazhong University of Science & Technology, Wuhan 430074
2.Beijing Institute of Aeronautical Materials, Beijing 100095 |
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Cite this article:
JI Longbo HU Shubing CHEN Jiyan WANG Yajun LI Xingzhi XIAO Jianzhong. Influences of Solution Hydrogen on the Fatigue Crack Propagation Lives of TA15 Alloys Electron Beam Welded Joints. Chin J Mater Res, 2010, 24(5): 493-500.
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Abstract The influences of hydrogen on microstructure and fatigue behaviors of electron beam welding TA15 alloys were investigated. No hydride formed when less than 0.105\% hydrogen were charged in TA15 welded joints. The substrates have better fatigue cracking resistance than that of the welded joint; and small amounts of charged hydrogen resulted in great drop of fatigue crack propagation life, because the exsited hydrogen reduced the toughness remarkably of the TA15 alloy in the welded joint and increased the fatigue crack growth rates. The hydrogen accumulated along the boundaries accelerated crack propagation along the martensite packets in the welded joints, resulting in the formation of “colony structure” on the fracture surface.
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Received: 11 June 2010
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| Fund: Supported by Initiative Research Foundtion of State Key Laboratory of Material Processing and Die $\&$ Mould Technology, Huazhong University of Science and Technology |
| [1] H.Liu, J.Cao, P.He, J.C.Feng. Effect of hydrogen on diffusion bonding of commercially pure titanium and hydrogenated Ti6Al4V alloys, International Journal of Hydrogen Energy, 34(2),1108(2009)
[2] L.S.Luo, Y.Q.Su, J.J.Guo, H.Z.Fu. Formation of titanium hydride in Ti-6Al-4V alloy, Journal of Alloys and Compounds, 425(1-2),140(2006)
[3] P.S.Pao, C.R.Feng, S.J.Gill. Hydrogen-assisted fatigue crack growth in beta-annealed Ti-6Al-4V, Scripta Materialia,40(1),19(1998)
[4] W.J.Evans, M.R.Bache. Hydrogen and fatigue behaviour in a near alpha titanium alloy, Scripta Metallurgica et Materialia, ,32(7),1019(1995)
[5] A.V.Fishgoit, B.A.Kolachev. The effect of hydrogen on fatigue-crack growth in titanium and its alloys, Soviet Materials Science,19(5) ,29(1983)
[6] J.E.Hack, G.R.Leverant.The influence of microstructure on the susceptibility of titanium alloys to internal hydrogen embrittlement, Metallurgical Transactions A, 1982,13A (10),1729(1982)
[7] GUO Long, BAI Bingzhe, HOU Hong-liang. Superplasticity of Ti-6Al-4V alloy processed by hydrogenation, Chinese Journal of Rare Metals, 33(4),467(2009)
(郭隆，白秉哲，侯红亮. 置氢Ti-6Al-4V钛合金超塑性研究，稀有金属, 33(4),467(2009))
[8] LI Xiaohua, NIU Yong, HOU Hongliang, REN Zhiqiang. Microstructure evolution and high temperature deforming behavior of hydrogenated Ti-6Al-4V alloy, The Chinese Journal of Nonferrous Metals, 18(8),1416(2008)
(李晓华，牛勇，侯红亮，李志强. 置氢Ti-6Al-4V 合金显微组织演变与高温变形行为, 中国有色金属学报, 18(8),1414-1420(2008))
[9] M.Q.Li, W.F.Zhang, T.K.Zhu, H.L.Hou, Z.Q.Li. Effect of hydrogen on microstructure of Ti-6Al-4V alloys, Rare Metal Materials and Engineering, 1(39),4(2010)
[10] H.J.Liu, L.Zhou, Q.W.Liu. Microstructural evolution mechanism of hydrogenated Ti-6Al-4V in the friction stir welding and post-weld dehydrogenation process, Scripta Materialia, 66(11),1011(2009)
[11] WANG Qing, XU Ran, SUN Dong-li. Effect of hydrogen treatment on microstructures and properties of weld metal in TA15 alloy, Transaction of the China Welding Institution, 29(10),19(2008)
(王清，徐然，孙东立. 氢处理对TA15钛合金焊缝组织和性能的影响, 焊接学报, 29(10),19(2008))
[12] L.Germain, N.Gey, M.Humbert, P.Bocher, M.Jahazi. Analysis of sharp microtexture heterogeneities in a bimodal IMI 834 billet, Acta Materialia,13(53), 3535(2005)
[13] K.Le Biavant, S.Pommier, C.Prioul. Local texture and fatigue crack initiation in a Ti-6Al-4V titanium alloy, Fatigue and Fracture of Engineering Materials and Structures, 25(6),530(2002)
[14] K.S.Chan. Changes in fatigue life mechanism due to soft grains and hard particles, International Journal of Fatigue, 32(3), 534(2010)
[15] J.H.Zuo, Z.G.Wang, E.H.Han. Effect of microstructure on ultra-high cycle fatigue behavior of Ti-6Al-4V, Materials Science and Engineering A, 473(1-2),151(2008)
[16] S.E.Harvey, P.G.Marsh, W.W.Gerberich. Atomic force microscopy and modeling of fatigue crack initiation in metals, Acta Metallurgica et Materialia, 42(10),3493(1994)
[17] S.Shademan, V.Sinha, A.B.O.Soboyejo, W.O.Soboyejo. An investigation of the effects of microstructure and stress ratio on fatigue crack growth in Ti-6Al-4V with colony α/β microstructures, Mechanics of Materials, 36(1-2), 161(2004).
[18] R.J.Wilson, V.Randle, W.J.Evans. The influence of the Burgers relation on crack propagation in a near alpha-titanium alloy, Philosophical Magazine A, 76(2),480(1997).
[19] M.Lang. Explanation of an apparent abnormality in fatigue crack growth rate curves in titanium alloys, Acta Materialia, 47 (11),3261(1999)
[20] N.K.Babu, S.G.S.Raman, C.V.Srinivasa Murthy, G.M.Reddy. Effect of beam oscillation on fatigue life of Ti-6Al-4V electron beam weldments, Materials Science and Engineering A , 471(1-2 ) , 114(2007)
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