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| NOTE ON B AND M_3B_2 IN A NiFeCrWMoTiAl ALLOY |
| LI Yuqing (Research Institute of Daye Steel Works)(Manuscript received S July; 1983; revised manuscript 13 December; 1983) |
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Cite this article:
LI Yuqing (Research Institute of Daye Steel Works)(Manuscript received S July; 1983; revised manuscript 13 December; 1983). NOTE ON B AND M_3B_2 IN A NiFeCrWMoTiAl ALLOY. Acta Metall Sin, 1984, 20(5): 329-452.
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Abstract An electron microscope study was made of the effect of B, especially as M_3B_2, on a NiFeCrWMoTiAl alloy using the fractograph of extraction carbon replica. The B additive may decrease and dissipate the, brittle flakes of Ti_4C_2S_2 which ordinarily embrittle the alloy without any B along the grain boundaries. The M_3B_2 was observed in the shape of flakes or dendritic flakes and of blocks in the alloys containing 0.025—0.050 and 0.075—0.100% B respectively. During heating under temperature below 1200℃, the M_3B_2 grains precipitate and the flaky M_3B_2 transforms into grains as well.
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Received: 18 May 1984
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5 李玉清,金属学报,18(1982) ,577．J |
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