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| EFFECT OF ESR ON CONSTITUTION NEARBY GRAIN BOUNDARY IN A Co-BASE SUPERALLOY |
| DAI Tongfu; WANG Shuhe; SHI Changxu (Institute of Metal Research; Academia Sinica; Shenyang) (Manuscript received 2 August; 1982; revised manuscript 25 January;1983) |
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Cite this article:
DAI Tongfu; WANG Shuhe; SHI Changxu (Institute of Metal Research; Academia Sinica; Shenyang) (Manuscript received 2 August; 1982; revised manuscript 25 January;1983). EFFECT OF ESR ON CONSTITUTION NEARBY GRAIN BOUNDARY IN A Co-BASE SUPERALLOY. Acta Metall Sin, 1984, 20(1): 47-148.
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Abstract The effect of the electroslag remelting (ESR) on the constitution nearby the grain boundary in a Co-base superalloy, Co-22Ni-22Cr-14W, during 760℃ aging has been investigated by Auger electron spectrum. Results show that the segregation of alloying elements toward the grain boundary is of various extents by the influence of ESR: the segregation of La may be decreased, and of P and S more markedly; That of Cr may also be decreased, but not obviously yet of W. At the beginning of aging, the segregation of C toward the vicinity of the grain boundary may be obstructed by ESR, and with the prolongation of aging time, it might be accelerated.
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Received: 18 January 1984
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