金属学报  2012, Vol. 48 Issue (2): 187-193    DOI: 10.3724/SP.J.1037.2011.00558

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Hf在粉末冶金镍基高温合金中的相间分配及对析出相的影响

张义文1,2,王福明1,胡本芙3

1. 北京科技大学冶金与生态工程学院, 北京 100083 2. 钢铁研究总院高温材料研究所, 北京 100081 3. 北京科技大学材料科学与工程学院, 北京 100083

PARTITION OF Hf AMONG THE PHASES AND ITS EFFECTS ON PRECIPITATES IN PM Ni–BASED SUPERALLOY FGH97

ZHANG Yiwen 1,2, WANG Fuming 1, HU Benfu 3

1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083 2. High Temperature Material Institute, Central Iron and Steel Research Institute, Beijing 100081 3. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083

张义文 王福明 胡本芙. Hf在粉末冶金镍基高温合金中的相间分配及对析出相的影响[J]. 金属学报, 2012, 48(2): 187-193.
, , . PARTITION OF Hf AMONG THE PHASES AND ITS EFFECTS ON PRECIPITATES IN PM Ni–BASED SUPERALLOY FGH97[J]. Acta Metall Sin, 2012, 48(2): 187-193.

摘要 参考文献 相关文章 Metrics 全文: PDF(943 KB)   摘要: 利用三维原子探针(3DAP), SEM, TEM和相分离方法, 研究了5种Hf含量的FGH97粉末冶金高温合金中 Hf在γ基体、γ'相和MC相中的分配,以及Hf对γ'和MC析出相的数量、组成和形貌的影响. 结果表明:Hf主要进入γ'相和MC型碳化物,γ'相变为(Ni,Co)3(Al,Ti,Nb,Hf),MC碳化物变为(Nb, Ti, Hf)C. 随着合金中Hf含量的增加, Hf进入γ'相的比例基本不变, 进入MC相的比例逐渐增大, 进入γ相的比例逐渐减小,即Hf在γ'和MC相的分配比R1逐渐减小, 在γ'和γ相的分配比$R_{2}$逐渐增大, R1和R2的平均值分别为1∶0.1和1∶0.05,这表明Hf主要分配在γ'相中, 其次分配在MC相中. Hf促进γ'相和MC相析出, 影响γ'相的尺寸和形貌, 对MC碳化物的尺寸和形貌的影响并不明显. 关键词 ： 粉末冶金高温合金,  FGH97,  Hf,   γ'相,  MC碳化物,  分配     Abstract：The partition behavior of hafnium among different phases in FGH97 PM (powder metallurgy) superalloy and its effects on the precipitation behaviors of MC carbide and γ' phase were studied by means of 3DAP, SEM, TEM and physiochemical phase analysis. The results showed that element Hf mainly exists in γ' phase and MC carbide, which makes γ' composition transform to (Ni, Co)3(Al, Ti, Nb, Hf), also makes MC transform to (Nb, Ti, Hf)C. With Hf addition increasing, the proportion of Hf in γ' maintains constant, but in MC carbide increases and in γ decreases, which means that partition ratio (R1) between γ' phase and MC carbide is decreased, while partition ratio (R2) between γ' phase and γ matrix is increased, the average partition ratio between γ' phase and MC carbide is about 1 :0.1, and the average partition ratio between γ' phase and γ matrix is about 1:0.05. Hf is helpful to the precipitations of γ' phase and MC carbide, the morphology and size of γ' phase are influenced more by Hf than these of MC carbide. Key words： PM superalloy    FGH97    Hafnium    γ' phase    MC carbide    partition 收稿日期: 2011-09-02      ZTFLH:  TG 113.12   基金资助: 国家重点基础研究发展计划资助项目2010CB631204 作者简介: 张义文, 男, 1964年生, 教授级高工, 博士生 服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 张义文 王福明 胡本芙 44.8K 链接本文: https://www.ams.org.cn/CN/10.3724/SP.J.1037.2011.00558      或      https://www.ams.org.cn/CN/Y2012/V48/I2/187 [1] Duhl D N, Sulivan C P. 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