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WANG Hongna, YAN Yanfu, MA Shitao, QI Xuefeng, LIU Shuying. Effect of rare earth element (La,Nb) on hardness of Ti15Cu15Ni filler metal and shear strength of TC4 joint[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(11): 99-103.
Citation: WANG Hongna, YAN Yanfu, MA Shitao, QI Xuefeng, LIU Shuying. Effect of rare earth element (La,Nb) on hardness of Ti15Cu15Ni filler metal and shear strength of TC4 joint[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(11): 99-103.
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Effect of rare earth element (La,Nb) on hardness of Ti15Cu15Ni filler metal and shear strength of TC4 joint

  • 1.

    College of Material Science and Engineering, Henan University of Science and Technology, Luoyang 471003, China

  • 2.

    LuoYang LeiJia Machinery Manufacturing Co., Ltd, Luoyang 471003, China

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  • Received Date: October 29, 2014
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    • Abstract
  • The effect of rare earth on the Ti15Cu15Ni brazing filler alloys and the properties of joints brazed with the widely-used TC4 was studied by adding small-amount of LaNd to Ti15Cu15Ni. The results indicate that RE phases are distributed on the boundaries between α-Ti and intermetallic phases, which improves the hardness of brazing filler alloys by hindering the movement of dislocations. When the content of RE is 1%, the hardness reaches to the maximum of 40 HRC. The RE content has large effect on the shear-strength, when the content of RE is under 0.5%. The strength increases with the increase of RE, when the content of RE is higher than 0.5%. The strength decreases with the increasing of RE. When the content of RE is exactly 0.5%, the shear-strength reaches a maximum of 244.55 MPa.
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    • References (14)
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