Please wait a minute...
金属学报  1994, Vol. 30 Issue (3): 124-132    
  论文 本期目录 | 过刊浏览 |
考虑热不协调性的镍基单晶合金细观力学分析
岳珠峰;郑长卿
西北工业大学
MICRO-MECHANICAL ANALYSIS OF THERMAL MISFIT OF SINGLE CRYSTAL Ni-BASE SUPERALLOY
YUE Zhufeng;ZHENG Changqing(Northwestern Polytechnical University;Xi'an)(Manuscript received 2 April;1993;in revised form 24 September;1993)
引用本文:

岳珠峰;郑长卿. 考虑热不协调性的镍基单晶合金细观力学分析[J]. 金属学报, 1994, 30(3): 124-132.
, . MICRO-MECHANICAL ANALYSIS OF THERMAL MISFIT OF SINGLE CRYSTAL Ni-BASE SUPERALLOY[J]. Acta Metall Sin, 1994, 30(3): 124-132.

全文: PDF(611 KB)  
摘要: 基于镍基单晶合金的细观结构特征,本文建立两个微胞模型对热不协调性作了系统的模型计算和分析.微胞模型1是以一个γ和γ’为考察对象,微胞模型2是以多个γ和γ’为考察对象,详细的分析表明,这两个模型有一定的等效性,但模型2可分析边界条件更宽的情况.基于微胞模型,对两相合金的临界分切应力进行了分析,结果表明,宏观临界分切应力可用考虑热不协调性的有限元法来处理,所得结果还可推广到较大的γ’相体积分数f的情况.考察了热不协调性对回火状态时γ’形状变化的影响,初步的定量分析表明,热内应力是γ’粗化的一个主要驱动力.
关键词 镍基单晶合金热不协调性热内应力临界分切应力细观构型    
Abstract:Based on the micro-structural feature of single crystal Ni-base superalloy,two micro-models have been proposed to calculate and analyze its thermal misfit,especially,the critical resolved shear stress of the two-phase superalloys.The results show that the macro-critical resolved shear stress can be obtained by the finite element method which takes thermal misfit into consideration,and the method can be used to analyze further the superalloys with high γ'volume.The effect of thermal misfit on change of γ'on tempering condition,and the primary quantitative result shows that the thermal misfit stress is one of the main driving forces on γ'coarsening.Correspondent:YUE Zhufeng,Post Box 350,Department of Mechanical Engineering,NorthwesternPolytechnical University,Xi'an 710072
Key wordsNi-base superalloy single crystal    thermal misfit    thermal misfit stesss    critical resolved shear stress    micro-structure
收稿日期: 1994-03-18     
1LallC,ChinS,PopeDP.MetallTrans,1979;10A:1323-13322PaidarV,Pope,DP,VitekV,ActaMetall,1984;32:435-4483MullerL,GlatzelU,Feller-KniepmeierM.ActaMetallMater,1992;40:1321-13274MullerL,LinkT,Feller-KniepmeierM.ScrMetallMater,1992;26:1297-13025GaydaJ,MackayRA.ScrMetall.1989;23:1835-18386GlatzelU,Feller-KniepmeierM.ScrMetall,1989;23:1839-18447DandekarDP,MartinAG.JMaterSci.1990;25:3321-33268ButtnerN,FusenigKD,NembachE.ActaMetalL1987;35:845-8549NembachN,SchanzerS,SchrorerW,TrinckanfK.Acta MetalL,1983;36:1471-147910Schanzers,NembachE.ActaMetall,Mater,1992;40:803-81311ReppichB,ScheppP,WehnerG.ActaMetall,1982;30:95-10412ShahBD,DuhlDN.In:GellM,KovtovichCS,BricknellRH,KentWB,RadavichKE,eds,Superalloys1984,Proc.5thInt.Symp.onSuperalloys,AIME,Warrendale,PA,1984:105-11413岳珠峰,郑长卿.航空学报,1993;14:A556-55914TienJK,CopleySM.MetallTransA,1971;2:543-55315冯端.结构与缺陷.北京:科学出版社,1988:525-52716BrownAM,AshbyMF.ActaMetall,1980;28:1085-110117StrangmanTE,HeathB,FujiiM.Low-CostSingleCrystalTurbineBlades,NASACR-168218,1983
[1] 苏勇,田素贵,于慧臣,于莉丽. 镍基单晶高温合金中温稳态蠕变期间的变形机制*[J]. 金属学报, 2015, 51(12): 1472-1480.
[2] 水丽 金涛 胡壮麒. [011]取向镍基单晶合金蠕变特征[J]. 金属学报, 2009, 45(11): 1349-1355.
[3] 岳珠峰; 吕震宙 . 双剪切试样在镍基单晶合金蠕变变形损伤和寿命研究中的应用[J]. 金属学报, 2002, 38(8): 809-813 .
[4] 李双明; 杜炜; 张军; 李金山; 刘林; 傅恒志 . CMSX-2单晶高温合金高梯度定向凝固下过渡区的组织演化特征[J]. 金属学报, 2002, 38(11): 1195-1198 .
[5] 吴东海; 胡赓祥; 乾晴行; 山口正治 . TiAl单晶中〈011]超点阵位错滑移的临界分切应力(CRSS)与晶体取向的关系[J]. 金属学报, 1999, 35(4): 337-342 .
[6] 吴东海;胡赓祥;乾晴行;山口正治. γ-TiAl单晶在不同温度的形变特性[J]. 金属学报, 1998, 34(1): 39-44.
[7] 岳珠峰;吕震宙;周利;郑长卿. 镍基单晶合金的厚度效应[J]. 金属学报, 1997, 33(3): 265-270.
[8] 苏翰生;吴仲棠. DD3单晶镍基合金蠕变-疲劳及寿命预测[J]. 金属学报, 1993, 29(1): 25-32.