γ/γ′Ni-Al合金中γ′溶解对热膨胀系数的影响
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- 英文论文题名：The Influence of the γ' Dissolving on the Thermal Expansion Behavior in γ/γ' Ni-Al Alloys
- 论文作者：施展 ; 李晓菲 ; 池天惠 ; 李卫彬 ; 卢勇 ; 杨水源 ; 王翠萍 ; 刘兴军
- 英文论文作者：Shi Zhan ; Li Xiaofei ; Chi Tianhui ; Li Weibin ; Lu Yong ; Yang Shuiyuan ; Wang Cuiping ; Liu Xingjun ; College of Materials ; School of Physics and Mechanical & Electrical Engineering ; Xiamen University ; Department of Aeronautics ; School of Physics and Mechanical & Electrical Engineering ; Xiamen University
- 年：2015
- 作者机构：厦门大学材料学院;厦门大学物理机电学院航空系;
- 论文关键词：高温合金 ; 显微结构 ; 相图 ; 热膨胀
- 英文论文关键词：superalloy ; microstructure ; phase diagram ; thermal expansion
- 会议召开时间：2015-05-20
- 会议录名称：第十三届中国高温合金年会论文集
- 英文会议录名称：Proceedings of the 13th China Superalloys Conference
- 语种：中文
- 分类号：TG132.3
- 学会代码：ZGJS
- 会议名称：第十三届中国高温合金年会
- 会议地点：中国北京
- 主办单位：中国金属学会高温材料分会
- 学会名称：中国金属学会
- 页数：4
- 文件大小：261k
- 原文格式：O
- 会议级别：全国
摘要
本文以最基本的Ni-Al二元合金作为模型合金,采用Thermo-Calc软件结合复合材料的有效介质理论对γ/γ′体系的热膨胀系数进行了理论模拟,研究了γ′的溶解与热膨胀系数之间的关系。结果表明:在γ′未发生溶解的低温度范围内,Ni-Alγ/γ′合金的热膨胀系数随γ′含量增加而降低,符合复合材料的混合定律。当温度超过500℃时,γ′逐渐开始溶解,中温区和高温区γ/γ′体系的热膨胀系数的增加与γ′相的溶解有直接的关系。因此,要得到低膨胀γ/γ′高温合金,应注意提高γ′相的热稳定性,尽可能使γ′相体积分数在服役温度附近保持稳定。
In this paper,the relationship of the dissolving of γ' phase and the thermal expansion coefficient(CTE) have been studied based on the basic Ni-Al alloys.A quantitatively simulation of the alloys' thermal expansion behavior have been carried out using the effective mediumapproaeh and Thermal-Calc software,γ' phasehave not been dissolved in low temperature range,the CTE decrease with the increasing of the content of γ' phase in the Ni-Al γ/γ' alloy.This is in agreement with the ' mixture law' for common composites.When the temperature is above 500℃,in the middle and higher temperature range,the γ'phase begins to dissolve,the increasing of the CTE in γ/γ' is proved to result from the dissolving of the γ' phase.Therefore,to achieve lower thermal expansion in γ/γ' superalloys,it is necessary to improve the phase stability of γ' phase in service temperature range.
In this paper,the relationship of the dissolving of γ' phase and the thermal expansion coefficient(CTE) have been studied based on the basic Ni-Al alloys.A quantitatively simulation of the alloys' thermal expansion behavior have been carried out using the effective mediumapproaeh and Thermal-Calc software,γ' phasehave not been dissolved in low temperature range,the CTE decrease with the increasing of the content of γ' phase in the Ni-Al γ/γ' alloy.This is in agreement with the ' mixture law' for common composites.When the temperature is above 500℃,in the middle and higher temperature range,the γ'phase begins to dissolve,the increasing of the CTE in γ/γ' is proved to result from the dissolving of the γ' phase.Therefore,to achieve lower thermal expansion in γ/γ' superalloys,it is necessary to improve the phase stability of γ' phase in service temperature range.
引文
[1]Yamamoto R,Kadoya Y,et al.Alloy design and material properties of Ni-based superalloy with low thermal expansion for steam turbine[J].Journal-iron and Steel Institute of Japan Japanese Edition,2004,90(1):37~42.
[2]Ohmo T,Toji A,et al.Development of low thermal expansion nickel base superalloy for steam turbine applications[J].Energy Mater.2(2007)222.
[3]Rao P V M,Murthy K S,et al.High temperature thermal expansion characteristics of Ni_3Al alloys[J].Journal of Alloys and Compounds,1993,190(2):L33~L35.
[4]Kamara A B,Ardell A J,et aL Lattice misfits in four binary Ni-Baseγ/γ'alloys at ambient and elevated temperatures[J].Metallurgical and Materials Transactions A,1996,27(10):2888~2896.
[5]Gornostyrev Y N,Kontsevoi O Y,et al.The role of thermal expansion and composition changes in the temperature dependence of the lattice misfit in two-phaseγ/γ'superalloys[J].Scripta Materialia,2007,56(2):81~84.
[6]Kim D E,Shang S L,et al.Effects of alloying elements on thermal expansions ofγ-Ni andγ'-Ni_3Al by first-principles calculations[J].Acta Materialia,2012,60(4):1846~1856.
[7]Sieborger D,Brehm H,et al.Temperature Dependence of Lattice Parameter,Misfit and Thermal Expansion Coefficient of Matrix,γ'Phase and Superalloy[J].Zeitschrift fuer Metallkunde,92(2001)58~61.
[8]Wang T,Zhu J,et al.Modeling of lattice parameter in the Ni-Al system[J].Metallurgical and Materials Transactions A,2004,35(8):2313~2321.
[9]Smagorinski M E,Tsantrizos P G.Development of light composite materials with low coefficients of thermal expansion[J].Materials Science and Technology,2000,16(7~8):853~861.
[10]Fahmy A A,Ragai A N.Thermal-Expansion Behavior of Two-Phase Solids[J].Journal of Applied Physics,1970,41(13):5108~5111.
[11]Nan C W.Physics of inhomogeneous inorganic materials[J].Progress in Materials Science,1993,37(1):1~116.
[12]Nan C W.Effective-medium theory of piezoelectric composites[J].Journal of Applied Physics,1994,76(2):1155~1163.
[13]Nan C W.Theoretical approach to the coupled thermalelectrical-mechanical properties of inhomogeneous-media[J].Phys.Rev.B.49(1994)12619.
[14]Nan C W.Effective magnetostriction of magnetostrictive composites[J].Appl.Phys.Lett.72(1998)2897.
[15]Datasheet of Ni200 from Special Metals Corp.The data from 600~1000℃were obtained by extrapolation.
[16]Prikhodko S V,Yang H,et al.Temperature and composition dependence of the elastic constants of Ni_3Al[J].Metallurgical and Materials Transactions A,1999,30(9):2403~2408.
[2]Ohmo T,Toji A,et al.Development of low thermal expansion nickel base superalloy for steam turbine applications[J].Energy Mater.2(2007)222.
[3]Rao P V M,Murthy K S,et al.High temperature thermal expansion characteristics of Ni_3Al alloys[J].Journal of Alloys and Compounds,1993,190(2):L33~L35.
[4]Kamara A B,Ardell A J,et aL Lattice misfits in four binary Ni-Baseγ/γ'alloys at ambient and elevated temperatures[J].Metallurgical and Materials Transactions A,1996,27(10):2888~2896.
[5]Gornostyrev Y N,Kontsevoi O Y,et al.The role of thermal expansion and composition changes in the temperature dependence of the lattice misfit in two-phaseγ/γ'superalloys[J].Scripta Materialia,2007,56(2):81~84.
[6]Kim D E,Shang S L,et al.Effects of alloying elements on thermal expansions ofγ-Ni andγ'-Ni_3Al by first-principles calculations[J].Acta Materialia,2012,60(4):1846~1856.
[7]Sieborger D,Brehm H,et al.Temperature Dependence of Lattice Parameter,Misfit and Thermal Expansion Coefficient of Matrix,γ'Phase and Superalloy[J].Zeitschrift fuer Metallkunde,92(2001)58~61.
[8]Wang T,Zhu J,et al.Modeling of lattice parameter in the Ni-Al system[J].Metallurgical and Materials Transactions A,2004,35(8):2313~2321.
[9]Smagorinski M E,Tsantrizos P G.Development of light composite materials with low coefficients of thermal expansion[J].Materials Science and Technology,2000,16(7~8):853~861.
[10]Fahmy A A,Ragai A N.Thermal-Expansion Behavior of Two-Phase Solids[J].Journal of Applied Physics,1970,41(13):5108~5111.
[11]Nan C W.Physics of inhomogeneous inorganic materials[J].Progress in Materials Science,1993,37(1):1~116.
[12]Nan C W.Effective-medium theory of piezoelectric composites[J].Journal of Applied Physics,1994,76(2):1155~1163.
[13]Nan C W.Theoretical approach to the coupled thermalelectrical-mechanical properties of inhomogeneous-media[J].Phys.Rev.B.49(1994)12619.
[14]Nan C W.Effective magnetostriction of magnetostrictive composites[J].Appl.Phys.Lett.72(1998)2897.
[15]Datasheet of Ni200 from Special Metals Corp.The data from 600~1000℃were obtained by extrapolation.
[16]Prikhodko S V,Yang H,et al.Temperature and composition dependence of the elastic constants of Ni_3Al[J].Metallurgical and Materials Transactions A,1999,30(9):2403~2408.