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XU Hong-ji, YIN Li-xiang, LI Jin-wei, XIE Ming. Microstructures and properties of TC4 alloy joints welded by the e lectron beam welding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2005, (11): 43-46.
Citation: XU Hong-ji, YIN Li-xiang, LI Jin-wei, XIE Ming. Microstructures and properties of TC4 alloy joints welded by the e lectron beam welding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2005, (11): 43-46.
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Microstructures and properties of TC4 alloy joints welded by the e lectron beam welding

  • 1.

    School of Materials Science and Engineering, Dalian Jiao-tong University, Dalian 116028, China

  • 2.

    Beijing Aeronautical Manufacturing Technology Research Institute, Beijing 100024, China

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  • Received Date: September 09, 2005
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  • Microstructures and properties of TC4 alloy joints welded by electron beam welding were investigated with room-temperature tensile test, room-temperature notch tension test, microhardness test and metallographic analysis. The results showed that the joints with good performance of TC4 alloy may be obtained by means of electron beam welding (EBW). The tensile strength of welded joint is not less than that of the base metal, and the notch sensitive coefficient of the welded joint is less than 1. The hardness of the welded joint and the HAZ are higher than that of the base metal. The microstructure of the weld metal is α' phase (needle martensite) which was transformed from the primary coarse β matrix, and that of the HAZ was the mixture of fine needle martensite and the primary a phase.
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