K488合金平衡相的热力学计算

利用Thermo-Calc热力学计算软件,对K488合金平衡相和合金元素对析出相的影响规律进行了计算和实验两方面的分析。计算和实验结果均表明：合金的平衡相主要有γ、γ＇、σ、碳化物,合金凝固过程中Mo,Ti偏析比较严重;随着C和Nb含量的增加,MC的析出量增加而析出温度降低,Ti元素则相反;Al、Ti元素含量的增加,γ＇相析出量和析出温度逐渐增加;Cr含量对σ相的析出量和析出温度影响最大;计算和实验结果具有较好的一致性。...

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Bibliographic Details
Published in航空材料学报 Vol. 38; no. 1; pp. 40 - 46
Main Author 孟凡国;孔胜国;李维;吴剑涛;李俊涛
Format Journal Article
LanguageChinese
Published 钢铁研究总院高温材料研究所,北京,100081 01.02.2018
Subjects
K488合金
平衡相图
析出温度
析出量
equilibrium phase diagram
precipitation amount
析出温度
precipitation temperature
平衡相图
析出量
K488 alloy
K488合金
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ISSN1005-5053
DOI10.11868/j.issn.1005-5053.2017.000055

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Summary:利用Thermo-Calc热力学计算软件,对K488合金平衡相和合金元素对析出相的影响规律进行了计算和实验两方面的分析。计算和实验结果均表明：合金的平衡相主要有γ、γ＇、σ、碳化物,合金凝固过程中Mo,Ti偏析比较严重;随着C和Nb含量的增加,MC的析出量增加而析出温度降低,Ti元素则相反;Al、Ti元素含量的增加,γ＇相析出量和析出温度逐渐增加;Cr含量对σ相的析出量和析出温度影响最大;计算和实验结果具有较好的一致性。
Bibliography:MENG Fanguo, KONG Shengguo, UI Wei, WU Jiantao, U Juntao（High Temperature Material Research Institute, Central Iron and Steel Research Institute, Beijing 100081
11-3159/V
K488 alloy; equilibrium phase diagram; precipitation amount; precipitation temperature
The influence of equilibrium and alloy elements on the precipitation phases of K488 alloy was calculated and experimental analyzed by using Thermo-Calc thermodynamic calculation software. The results of calculation and experiment are shown that the alloy equilibrium phases are γ,γ＇,σ and carbides. In the alloy solidification process,Mo,Ti segregations are more serious. With the increase of C and Nb content,MC precipitation increased,but precipitation temperature decreased,the content of Ti is on the contrary.the increase of Al,Ti contents,γ＇ phase precipitations amount and precipitation temperature gradually increased. The content of Cr has most influence on the precipitation amount and precipitation temperature of the sigma phase. The calculation and experim
ISSN:1005-5053
DOI:10.11868/j.issn.1005-5053.2017.000055