DD6单晶高温合金氧化物夹杂形成的热力学计算及分析

采用Thermo—calc热力学计算软件以及JMatPro分析软件对DD6镍基单晶高温合金真空感应熔炼过程中氧化物夹杂形成的热力学条件进行了计算分析。结果表明:DD6单晶高温合金熔化和凝固过程中形成的氧化物夹杂主要为Al2O3。热力学平衡状态下,熔化阶段和凝固阶段合金液中氧的活度分别在(3.21~14.0)×10,(1.63~4.89)×10^(-8)。范围内。在真空度为0.1Pa时,采用CaO坩埚熔炼DD6合金将会造成熔体增氧和A1z()s夹杂的产生。为了使A1。Os夹杂含量降低至10×10^(-6)以下,合金化开始前应将氧的含量控制在4.709×10^(-6)以内。...

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Published in材料工程 no. 7; pp. 78 - 82
Main Author 乔海滨 刘林 赵新宝 汤鑫 张军 傅恒志 李相辉 曹腊梅
Format Journal Article
LanguageChinese
Published 西北工业大学 凝固技术国家重点实验室,西安,710072%北京航空材料研究院先进高温结构材料重点实验室,北京,100095 2013
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ISSN1001-4381
1001-4381
DOI10.3969/j.issn.1001-4381.2013.07.015

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Abstract 采用Thermo—calc热力学计算软件以及JMatPro分析软件对DD6镍基单晶高温合金真空感应熔炼过程中氧化物夹杂形成的热力学条件进行了计算分析。结果表明:DD6单晶高温合金熔化和凝固过程中形成的氧化物夹杂主要为Al2O3。热力学平衡状态下,熔化阶段和凝固阶段合金液中氧的活度分别在(3.21~14.0)×10,(1.63~4.89)×10^(-8)。范围内。在真空度为0.1Pa时,采用CaO坩埚熔炼DD6合金将会造成熔体增氧和A1z()s夹杂的产生。为了使A1。Os夹杂含量降低至10×10^(-6)以下,合金化开始前应将氧的含量控制在4.709×10^(-6)以内。
AbstractList 采用Thermo—calc热力学计算软件以及JMatPro分析软件对DD6镍基单晶高温合金真空感应熔炼过程中氧化物夹杂形成的热力学条件进行了计算分析。结果表明:DD6单晶高温合金熔化和凝固过程中形成的氧化物夹杂主要为Al2O3。热力学平衡状态下,熔化阶段和凝固阶段合金液中氧的活度分别在(3.21~14.0)×10,(1.63~4.89)×10^(-8)。范围内。在真空度为0.1Pa时,采用CaO坩埚熔炼DD6合金将会造成熔体增氧和A1z()s夹杂的产生。为了使A1。Os夹杂含量降低至10×10^(-6)以下,合金化开始前应将氧的含量控制在4.709×10^(-6)以内。
TG146.1+5; 采用Thermo-calc热力学计算软件以及JMatPro分析软件对DD6镍基单晶高温合金真空感应熔炼过程中氧化物夹杂形成的热力学条件进行了计算分析.结果表明:DD6单晶高温合金熔化和凝固过程中形成的氧化物夹杂主要为Al2O3.热力学平衡状态下,熔化阶段和凝固阶段合金液中氧的活度分别在(3.21~14.0)×10-7,(1.63~4.89)×10-8 范围内.在真空度为0.1Pa时,采用CaO坩埚熔炼DD6合金将会造成熔体增氧和Al2O3夹杂的产生.为了使Al2O3夹杂含量降低至10×10-6以下,合金化开始前应将氧的含量控制在4.709×10-6以内.
Author 乔海滨 刘林 赵新宝 汤鑫 张军 傅恒志 李相辉 曹腊梅
AuthorAffiliation 西北工业大学凝固技术国家重点实验室,西安710072 北京航空材料研究院先进高温结构材料重点实验室,北京100095
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DocumentTitleAlternate Thermodynamics Calculation and Analysis of Oxide Inclusion Formation in Single Crystal Superalloy DD6
DocumentTitle_FL Thermodynamics Calculation and Analysis of Oxide Inclusion Formation in Single Crystal Superalloy DD6
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Issue 7
Keywords 氧活度
Al2O3夹杂
thermodynamics calculation
DD6
热力学计算
oxygen activity
Al2O3 inclusion
Language Chinese
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Notes 11-1800/TB
DD6 ; Al2O3 inclusion ; thermodynamics calculation ; oxygen activity
QIAO Hai-bin ,LIU Lin ,ZHAO Xin-bao ,TANG Xin , ZHANG Jun ,FU Heng-zhi ,LI Xiang-hui ,CAO La-mei (1. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University,Xi'an 710072,China; 2 .Science and Technology on Advanced High Temperature Structural Materials Laboratory,Beijing Institute of Aeronautical Materials,Beijing 100095, China)
Calculation and analysis on the thermodynamics conditions for the formation of oxide inclu- sion during the vacuum induction melting of Ni-based single crystal superalloy DD6 have been carried out by using Thermo-calc thermodynamics software and JMatPro analysis software. The results show that the main oxide inclusion is Al2O3. Under the thermodynamic equilibrium state, the value of oxygen activity during the melting and solidification stages is within (3. 21-14. 0) ×10^(-7) and (1. 63- 4.89) ×10^(-8). It will cause increasing oxygen in the molten liquid and the formation of A
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PublicationTitleAlternate Journal of Materials Engineering
PublicationTitle_FL Journal of Materials Engineering
PublicationYear 2013
Publisher 西北工业大学 凝固技术国家重点实验室,西安,710072%北京航空材料研究院先进高温结构材料重点实验室,北京,100095
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Snippet 采用Thermo—calc热力学计算软件以及JMatPro分析软件对DD6镍基单晶高温合金真空感应熔炼过程中氧化物夹杂形成的热力学条件进行了计算分析。结果表明:DD6单晶高温合金熔化和...
TG146.1+5; 采用Thermo-calc热力学计算软件以及JMatPro分析软件对DD6镍基单晶高温合金真空感应熔炼过程中氧化物夹杂形成的热力学条件进行了计算分析.结果表明:DD6单晶高温...
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SubjectTerms Al2O3
DD6
夹杂
氧活度
热力学计算
Title DD6单晶高温合金氧化物夹杂形成的热力学计算及分析
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