J Mater Sci Technol ›› 1998, Vol. 14 ›› Issue (1): 41-44.

• Articles • Previous Articles     Next Articles

Structure of Second Phase Particles in As-cast Ti-5Al-4Sn-2Zr-1Mo-0.25Si-1Nd Alloy

Geping LI and Qingchun LI (Harbin Institute of Technology, Harbin 150001, China)Dong LI, Yuyin LIU Shaoxuan GUAN Qingjiang WANG, Dehai PING and Zhuangqi HU (Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, China)   

  • Received:1998-01-28 Revised:1998-01-28 Online:1998-01-28 Published:2009-10-10

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Abstract: The microstructure of the Ti-5Al-4Sn-2Zr-1Mo-0.25Si-1Nd (Ti-55) alloy containing second phase particles was studied. The second phase particles are 1~15 μm in size and most of them are distributed at the grain boundaries in the form of ellipsoid with a few short needle-like and blocky phases. It consists of either dark or bright amorphous "matrix", and some small spots dispersed within the "matrix", which match SnO (orthorhombic, a=0.500 nm, b=0.572 nm, c=1.12 nin).

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