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Acta Metall Sin  1994, Vol. 30 Issue (1): 11-19    DOI:
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STRENGTHENING BEHAVIOUR OF A HIGH-TEMPERATURE Ti ALLOY CONTAINING Nd
SUN Fusheng;CAO Chunxiao;(Beijing Institute of Aeronautical Materials)(Manuscript received 15 June;1993;in revised form 24 August;1993)
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SUN Fusheng;CAO Chunxiao;(Beijing Institute of Aeronautical Materials)(Manuscript received 15 June;1993;in revised form 24 August;1993). STRENGTHENING BEHAVIOUR OF A HIGH-TEMPERATURE Ti ALLOY CONTAINING Nd. Acta Metall Sin, 1994, 30(1): 11-19.

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Abstract  Influence of Nd on microstructure,tensile properties,thermal stability and strengthening behaviour of Ti-5.5A1-4.SSn-2Zr-1Mo-0.25Si-Nd alloy was studied,Nd can not only refine the prior β grains and α plates,and especially densify dislocation network subgrain boundaries,but also improves tensile strength and thermal-stability.The strengthening of Nd is superposition of strengthening caused by grain-refinement,particularily the densifying of subgrain boundaries,and weakening caused by depletion of Sn and O2 in matrix phase.Correspondent:SUN Fusheng,senior engineer.Laboratory No.15,(Beijing Institue of Aeronautical Materials,Beijing 100095)
Key words:  TiAlSnZrMoSiNd alloy      strengthening      Nd     
Received:  18 January 1994     
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