| N元素对FGH96高温合金析出相的影响 |
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| 引用本文： | 柴国明,陈希春,郭汉杰,付锐.N元素对FGH96高温合金析出相的影响[J].特种铸造及有色合金,2011,31(12):1079-1083. |
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| 作者姓名： | 柴国明 陈希春 郭汉杰 付锐 |
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| 作者单位： | 1. 北京科技大学冶金与生态工程学院
2. 钢铁研究总院高温材料研究所 |
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| 摘 要： | 基于Thermo-Calc热力学计算软件及相应的Ni基数据库,计算了含N与不含N时FGH96高温合金中可能的平衡析出相,并用Scheil-Gulliver凝固模型对两种合金进行了凝固模拟.对两种合金的计算结果进行比较,从热力学角度分析研究了N对FGH96高温合金中析出相的影响.结果表明,N元素主要影响一次碳化物的析出行为,而对其他相的析出影响很小；在含有少量N的FGH96合金中,在液相线温度以上可析出Ti、N为主要成分的M(C,N)相,而不含N时,只有当固相率达到70％时才会从残余液相中析出MC型碳化物.由计算得出的一次碳化物的成分变化结果,并结合扫描电镜图和能谱分析结果可推断出,FGH96高温合金中含有N时,首先从液态合金中析出以TiN为主要成分的M(C,N)相,随后的MC型碳化物会在其表面析出,形成以TiN为核心的一次碳化物.
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| 关 键 词： | FGH96高温合金 一次碳化物 Thermo-Calc热力学计算软件 |
Effect of N on Precipitate Phases in FGH96 Superalloy |
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| Chai Guoming
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Chen Xichun
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Guo Hanjie
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Fu Rui.Effect of N on Precipitate Phases in FGH96 Superalloy[J].Special Casting & Nonferrous Alloys,2011,31(12):1079-1083. |
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| Authors: | Chai Guoming Chen Xichun Guo Hanjie Fu Rui |
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| Affiliation: | Chai Guoming1,Chen Xichun2,Guo Hanjie1,Fu Rui2 (1.School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,2.Department of High Temperature Materials,Central Iron and Steel Research Institute) |
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| Abstract: | Using Thermo-Calc thermodynamic software combined with the nickel-based database,the possible equilibrium precipitates in FGH96 superalloys containing 0.003% N and in FGH96 superalloys without N were calculated,and the solidification simulation of FGH96 superalloy has been made based on the Scheil-Gulliver solidification model.The effects of N on precipitate in FGH96 superalloy have been investigated by comparing the calculated results of two kinds of superalloys.The result show that,nitrogen content shows ... |
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| Keywords: | FGH96 Superalloy Primary Carbides Thermo-Calc Thermodynamic Calculation Software |
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