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LUO Yi1,2, HAN Jingtao1,2, ZHU Liang1,2, ZHANG Chengyang1,2. Study on inducement and equilibrium mechanism of pore defects in vacuum electron beam welding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2017, 38(8): 107-110. DOI: 10.12073/j.hjxb.20150804002
Citation: LUO Yi1,2, HAN Jingtao1,2, ZHU Liang1,2, ZHANG Chengyang1,2. Study on inducement and equilibrium mechanism of pore defects in vacuum electron beam welding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2017, 38(8): 107-110. DOI: 10.12073/j.hjxb.20150804002
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Study on inducement and equilibrium mechanism of pore defects in vacuum electron beam welding

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  • Received Date: August 03, 2015
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    • Abstract
  • Pore defects are the major problem in vacuum electron beam welding. The inducement mechanism and thermodynamic equilibrium mechanism were analyzed from the perspective of force balance condition, and the minimum radius survival conditions for pores in molten pool were proposed. The results showed that the gasification nucleus is an important factor induced bubbles in molten pool from the perspective of bubble dynamics. The bubbles, which don't meet the minimum radius survival condition, do not satisfy the thermodynamic equilibrium condition and therefore can’t develop into the pores. The size of the bubbles generated on the wall of middle part of weld depends largely on the gas density in bubble, surface tension of bubble, and overheating of gasphase components in bubble. The overheating is not only a driving force for bubble stability, but also a main factor determining the bubble size.
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  • 王文权, 马 凯, 孙大千, 等. Nd: YAG激光焊接800 MPa TRIP钢的接头组织与性能[J]. 焊接学报, 2010, 31(6): 29-32. Wang Wenquan, Ma Kai, Sun Daqian,etal. Microstructure and properties of Nd: YAG laser welded 800 MPa TRIP steel[J]. Transactions of the China Welding Institution, 2010, 31(6): 29-32.[2] 张伟华, 邱小明, 孙大千, 等. ZL109铝硅合金CO2激光焊接头组织与性能[J]. 焊接学报, 2010, 31(6): 45-48. Zhang Weihua, Qiu Xiaoming, Sun Daqian,etal. Microstructure and mechanical properties of CO2laser-welding joint of ZL109 aluminum silicon alloy[J]. Transactions of the China Welding Institution, 2010, 31(6): 45-48.[3] Gouret N, Dour G, Miguet B,etal. Assessment of the origin of porosity in electron-beam-welded TA6V plates[J]. Metallurgical and Materials Transactions A, 2004, 35(3): 879-889.[4] Mohandas T, Banerjee D, Kutumba Rao V V. Fusion zone microstructure and porosity in electron beam welds of anα+βtitanium alloy[J]. Metallurgical and Materials Transactions A, 1999, 30(3): 789-798.[5] Lin H T, Grossbeck M L, Chin B A. Cavity microstructure and kinetics during gas tungsten arc welding of helium-containing stainless steel[J]. Metallurgical Transactions A, 1990, 21(9): 2585-2596.[6] Shen J, You G Q, Long S Y,etal. Abnormal macropore formation during double-sided gas tungsten arc welding of magnesium AZ91D alloy[J]. Materials Characterization, 2008, 59(8): 1059-1065.[7] Liu L M, Song G, Liang G L,etal. Pore formation during hybrid laser-tungsten inert gas arc welding of magnesium alloy AZ31B—mechanism and remedy[J]. Materials Science and Engineering A, 2005, 390(1-2): 76-80.[8] Chi C T, Chao C G, Liu T F,etal. Relational analysis between parameters and defects for electron beam welding of AZ-series magnesium alloys[J]. Vacuum, 2008, 82(11): 1177-1182.[9] 张 婧, 单际国, 温 鹏, 等.焊接工艺对压铸镁合金CO2激光焊缝气孔率的影响[J]. 焊接学报, 2011, 32(5): 17-20. Zhang Jing, Shan Jiguo, Wen Peng,etal. Effects of welding parameters on weld porosity during CO2laser welding of die-cast magnesium alloy[J]. Transactions of the China Welding Institution, 2011, 32(5): 17-20.
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