抽拉速度和固溶温度对一种单晶高温合金组织和持久性能的综合影响

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• 英文论文题名：Combined Influence of Withdraw Rate and Solution Temperature on Microstructure and Stress Rupture Property of a Single Crystal Superalloy
• 论文作者：刘金来 ; 金涛 ; 张炫 ; 赵乃仁 ; 孟祥斌 ; 孙晓峰
• 英文论文作者：Liu Jinlai ; Jin Tao ; Zhang Xuan ; Zhao Nairen ; Meng Xiangbin ; Sun Xiaofeng ; Institute of Metal Research ; Chinese Academy of Sciences
• 年：2015
• 作者机构：中国科学院金属研究所高温合金部;
• 论文关键词：单晶高温合金 ; 抽拉速度 ; 固溶 ; 持久断裂
• 英文论文关键词：single crystal superalloy ; withdraw rate ; solution treatment ; stress rupture
• 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：2132k
• 原文格式：O
• 会议级别：全国

摘要

本文研究了不同抽拉速度和固溶温度对一种第一代单晶高温合金持久性能的影响。结果表明,在两种测试条件下持久性能表现出相同的规律。在低抽拉速度下提高固溶温度能略微提高持久寿命;高抽拉速度下的持久寿命相对低拉速情况大幅提高,且提高固溶温度显著降低了合金的持久寿命,即在本文所选的范围内高拉速低固溶条件下寿命最长。提高固溶温度时,γ′尺寸增大且变得均匀,同时促进初生MC部分分解及微孔洞的形核与长大,因此提高固溶温度在低拉速下对性能有利,在高拉速下反而降低持久寿命。
Influence of withdraw rate and solution temperature on stress rupture properties of a first generation single crystal superalloy is studied in present paper.The stress rupture life shows same tendency under two testing conditions.Under low withdraw rate,the stress rupture life is slightly increased with higher solution temperature.The stress rupture life of high withdraw rate is remarkably higher than that of low withdraw rate.Moreover,the stress rupture life is reduced by higher solution temperature.So the stress rupture life under high withdraw rate and low solution temperature within the testing condition of present paper.When solution temperature increase,the size of γ' becomes larger and more uniform,the decomposition of primary MC and nucleation and growth of voids are also promoted.Therefore,higher solution temperature is favorable to stress rupture property under low withdraw rate while harmful under high withdraw rate.

引文

[1]谢锡善.我国高温材料的应用与发展[J].机械工程材料,2004(28):2~9.
    [2]胡壮麒,刘丽荣,等.镍基单晶高温合金的发展[J].航空发动机,2005(31):1~7.
    [3]Bruckner U,Epishin A,et al.Local X-ray diffraction analysis of the structure of dendrites in single-crystal nickelbase superalloys[J].Acta mater.1997(45):5223~5231.
    [4]Miyazaki T,Mamura H L,et aL The formation ofγ'precipitate doublets in Ni-Al alloys and their energetic stability.Mater.Sci.Eng.A,1982,54:9~15.
    [5]肖纪美.合金相与相变[M].北京:冶金工业出版社,1987:133.
    [6]Link T,Zabler S,et al.Synchrotron tomography of porosity in single-crystal nickel-base superalloys.Mater.Sci.Eng.A 425(2006)47~54.
    [7]Sherry A H,Pilkington R.The creep fracture of a singlecrystal superalloy[J].Mater.Sci.Eng.A 172(1993)51~61.
    [8]Meyer-Olbersleben F,Goldschmidt D,et al.Superalloys92,in:S.D.Antolovich,R.W.Stusrud,R.A.MacKay,D.L.Anton,T.Khan,R.D.Kissinger,D.L Klarstrom(Eds.),TMS,Warrendale,1992,785~794.
    [9]Rae C M F,Matan N,et al.The role of stacking fault shear in the primary creep of[001]-oriented single crystal superalloys at 750℃and 750MPa A300(2001)125~134.