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HAO Chuan yong, SHI Yuan bao, LI Zheng lin, MAO Xian feng. Weldability of Ti-5Al-4Sn-2Zr-1Mo-0.25Si-1Nd Alloy[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2003, (3): 9-12,16.
Citation: HAO Chuan yong, SHI Yuan bao, LI Zheng lin, MAO Xian feng. Weldability of Ti-5Al-4Sn-2Zr-1Mo-0.25Si-1Nd Alloy[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2003, (3): 9-12,16.
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Weldability of Ti-5Al-4Sn-2Zr-1Mo-0.25Si-1Nd Alloy

    Abstract
  • The weldability of Ti-5Al-4Sn-2Zr-1Mo-0.25Si-1Nd alloy was investigated.The test results showed that the heat affected zone (HAZ) of Ti-5Al-4Sn-2Zr-1Mo-0.25Si-1Nd alloy weldment exhibit obvious ductility decrease and the 150℃ preheat can improve the HAZ ductility to a certain extent.Combined with alloy system adjustment and appropriate postweld heat treatment,the weldment comprehensive properties were controlled to meet the specifications.Nd-rich particle clusters along the grain boundaries and the inner grain martensite structure were considered to be two essential factors embrittling the Ti-5Al-4Sn-2Zr-1Mo-0.25Si-1Nd alloy weldments.
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