W.H. Jiang
,
X.D. Yao
,
H.R. Guan and Z.Q. Hu(1) Department of Superalloys
,
Institute of Metal Research
,
The Chinese Academy of Sciences
,
Shenyang 110015
,
China2) Department of Metal Materials Engineering
,
Shenyang Polytechnic University) Shenyang 110023
,
China )Manuscript received in revised form 11 September 1998
金属学报(英文版)
Secondary M23C6 precipitation around primary MC carbide in a directionally solidified cobalt-base saperalloy was investigated duriny aging at 850℃. The results show that it was closely related to the decomposition of the MC. Two mechanisms were suggested,i.e. the in situ reaction, MC+γ→M23C6+C, and the direct reaction, M+C→M23C6,in which MC acted as a carbon source.
关键词:
cobalt-base superalloy
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null
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null
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