小孔对DD6单晶热机械疲劳的影响

荆甫雷; 唐诗白; 杨俊杰

doi:10.13224/j.cnki.jasp.20200469

小孔对DD6单晶热机械疲劳的影响

doi: 10.13224/j.cnki.jasp.20200469

1. 中国航空发动机集团有限公司中国航空发动机研究院, 北京 101304;
2. 清华大学航空发动机研究院, 北京 100084

详细信息

作者简介:
荆甫雷(1984-),男,高级工程师,博士,主要从事航空发动机热端部件疲劳寿命研究。

中图分类号: V232.4;O346.2
计量
- 文章访问数: 422
- HTML浏览量: 143
- PDF量: 276
- 被引次数: 0
出版历程
- 收稿日期: 2020-11-03
- 刊出日期: 2021-08-28

Influence of small hole on thermal mechanical fatigue in single crystal superalloy DD6

1. Aero Engine Academy of China, Aero Engine Corporation of China, Beijing 101304, China;
2. Institute for Aero Engine, Tsinghua University, Beijing 100084, China

摘要

摘要: 通过开展同相（IP）和反相（OP）循环下DD6单晶带孔试样与光滑试样的机械应变控制热机械疲劳（TMF）试验，研究孔边应力集中与温度-应变相位角对裂纹萌生寿命的影响。结果表明：带孔试样裂纹萌生于孔边最大主应力位置，其寿命比相同名义载荷的光滑试样低约一个数量级；带孔试样的OP寿命均短于IP，这与光滑试样寿命趋势一致。结合基于滑移系的黏塑性数值模拟，获取不同试验条件下的单晶应力应变分布特征及其演化规律，并构建单晶TMF损伤与宏细观参量的关联。在此基础上，建立一种能够综合考虑应力集中与相位角影响的单晶TMF寿命模型，对光滑试样与带孔试样IP、OP TMF寿命预测结果基本落在试验寿命的2倍分散带内。
- 单晶 /
- 热机械疲劳 /
- 应力集中 /
- 同相 /
- 反相 /
- 寿命预测
Abstract: Mechanical strain -controlled thermal mechanical fatigue(TMF) tests under in-phase(IP) and out-of-phase(OP) cycles were performed on specimens with/without small hole made of nickel based single crystal superalloy DD6, and the impacts of stress concentration induced by small hole and phase shift between the mechanical strain and temperature on lifetime on crack initiation were studied. The results indicated that the life of the specimens with small hole whose cracks initiated at the location of maximum principal stress around the hole was one order of magnitude lower than that of smooth ones. Moreover,the OP life was lower than IP for specimens with small hole,which was consistent with that for specimens without small hole. The distribution and evolution of stress and strain in the specimens were obtained with the aid of numerical simulation with viscoplastic constitutive model based on slip systems. The correlation between the damage generated in single crystal superalloy under TMF loadings and the macro-/micro-parameters was identified. Based on the above-mentioned results, a new life model which could consider the effect of stress concentration and phase shift was proposed for the TMF life prediction. The predicted life of DD6 specimens with and without small hole under IP and OP TMF loadings was approximately within a factor 2 of the experimental life.
- single crystal /
- thermal mechanical fatigue(TMF) /
- stress concentration /
- in-phase(IP) /
- out-of-phase(OP) /
- life prediction

HTML

参考文献(30)

[1]	KERSEY R K, STAROSELSKY A, DUDZINSK D C, et al.Thermomechanical fatigue crack growth from laser drilled holes in single crystal material[J].International Journal of Fatigue,2013,55:183-193.
[2]	ZHANG W J. Thermal mechanical fatigue of single crystal superalloys:achievements and challenges[J]. Materials Science and Engineering:A,2016,650:389-395.
[3]	JONES J, WHITTAKER M, LANCASTER R, et al. The influence of phase angle,strain range and peak cycle temperature on the TMF crack initiation behaviour and damage mechanisms of the nickel based superalloy,RR1000[J].International Journal of Fatigue,2017,98:279-285.
[4]	YU J J,HAN G M,CHU Z K,et al.High temperature thermo-mechanical and low cycle fatigue behaviors of DD32 single crystal superalloy[J]. Materials Science and Engineering:A,2014,592:164-172.
[5]	WANG R Q,JIANG K H,JING F L,et al.Thermomechanical fatigue investigation on a single crystal nickel superalloy turbine blade[J]. Engineering Failure Analysis, 2016, 66(8):284-295.
[6]	BOUTAREK N,SAIDI D,ACHEHEB M A,et al.Competition between three damaging mechanisms in the fractured surface of an Inconel 713 superalloy[J]. Materials Characterization,2008,59(7):951-956.
[7]	YANG X G, WANG J K, LIU J L.High temperature LCF life prediction of notched DS Ni-based superalloy using critical distance concept[J].International Journal of Fatigue,2011, 33:59-66.
[8]	GATES N, FATEMI A.Notch deformation and stress gradient effects in multiaxial fatigue[J].Theoretical and Applied Fracture Mechanics,2016,84:3-25.
[9]	LIANG J W,AI X,WEN Z X,et al.Experimental investigation on low cycle fatigue of DZ125 with film cooling holes in different processes of laser drilling[J]. Engineering Failure Analysis,2016,59:326-333.
[10]	蒋康河. 镍基单晶高温合金热机械疲劳损伤机理及寿命预测[D].北京:北京航空航天大学,2017. JIANG Kanghe. Thermomechanical fatigue damage mechanism and life prediction of a single crystal nickel superalloy[D].Beijing:Beijing University of Aeronautics and Astronautics,2017.(in Chinese)
[11]	SUSMEL L, TAYLOR D. The theory of critical distances to estimate lifetime of notched components subjected to variable amplitude uniaxial fatigue loading[J]. International Journal of Fatigue,2011,33(7):900-911.
[12]	LEIDERMARK D, MOVERARE J, SIMONSSON K, et al. A combined critical plane and critical distance approach for predicting fatigue crack initiation in notched single-crystal superalloy components[J]. Internal Journal of Fatigue, 2011, 33(10):1351-1359.
[13]	辛朋朋,胡绪腾,宋迎东. 基于临界距离理论的TC4缺口试样低循环疲劳寿命预测[J]. 航空动力学报,2012,27(5):1105-1112. XIN Pengpeng,HU Xuteng,SONG Yingdong.LCF life prediction for TC4 alloy notched specimens based on theory of critical distance[J].Journal of Aerospace Power,2012,27(5):1105-1112.(in Chinese)
[14]	张成成,姚卫星. 典型缺口件疲劳寿命分析方法[J]. 航空动力学报,2013,28(6):1223-1230. ZHANG Chengcheng, YAO Weixing. Typical fatigue life analysis approaches for notched components[J]. Journal of Aerospace Power,2013,28(6):1223-1230.(in Chinese)
[15]	KRZYZAK D, LAGODA T. Fatigue life estimation of notched elements with use of non-local volumetric method[J]. International Journal of Fatigue,2014,61:59-66.
[16]	BOURBITA F, REMY L.A combined critical distance and energy density model to predict high temperature fatigue life in notched single crystal superalloy members[J].International Journal of Fatigue,2016,84:17-27.
[17]	KUPKOVITS R A, NEU R W. Thermomechanical fatigue of a directionally-solidified Ni-base superalloy:smooth and cylindrically-notched specimens[J]. International Journal of Fatigue,2010,32:1330-1342.
[18]	FERNANDEZ-ZELAIA P, NEU R W. Influence of notch severity on thermomechanical fatigue life of a directionally solidified Ni-base superalloy[J].Fatigue and Fracture of Engineering Materials and Structures,2014,37(8):854-865.
[19]	WANG R Q, ZHANG B, HU D Y, et al.In -phase thermomechanical fatigue lifetime prediction of nickel-based single crystal superalloys from smooth specimens to notched specimens based on coupling damage on critical plane[J].International Journal of Fatigue,2019,126:327-334.
[20]	蒋康河,陈竞炜,荆甫雷,等. 镍基单晶高温合金DD6气膜孔热机械疲劳试验[J].航空动力学报,2019,34(5):980-986. JIANG Kanghe,CHEN Jingwei,JING Fulei,et al.Thermomechanical fatigue on the nickel based single crystal superalloy DD6 with film cooling hole[J].Journal of Aerospace Power,2019,34(5):980-986.(in Chinese)
[21]	American Society for Testing and Materials(ASTM) International.Standard practice for strain controlled thermomechanical fatigue testing:E2368-10[S]. West Conshohocken, US:ASTM,2010:1-10.
[22]	STEPHENS R I, FATEMI A, STEPHENS R R, et al. Metal fatigue in engineering[M]. New York:John Wiley and Sons Incorporation,2001.
[23]	JORDAN E H, SHI S X, WALKER K P. The viscoplastic behavior of Hastelloy-X single crystal[J]. International Journal of Plasticity,1993,9:119-139.
[24]	王荣桥,荆甫雷,胡殿印. 基于临界平面的镍基单晶高温合金疲劳寿命预测模型[J]. 航空动力学报,2013,28(11):2587-2592. WANG Rongqiao,JING Fulei,HU Dianyin.Fatigue life prediction model based on critical plane of nickel-based single crystal superalloy[J]. Journal of Aerospace Power, 2013, 28(11):2587-2592.(in Chinese)
[25]	SCHIJVE J. Fatigue of structure and materials[M]. New York:Kluwer Academic Publisher,2009.
[26]	TINGA T, BREKELMANS W A M, GEERS M G D. Time-incremental creep-fatigue damage rule for single crystal Ni-base superalloys[J]. Materials Science and Engineer-ing:A,2009,508(1/2):200-208.
[27]	WANG R Q, ZHANG B, HU D Y, et al. A critical-plane-based thermomechanical fatigue lifetime prediction model and its application in nickel-based single-crystal turbine blades[J].Materials at High Temperatures,2019,36(4):325-334.
[28]	荆甫雷,王荣桥,胡殿印,等. 单晶高温疲劳损伤参量的选取与寿命建模[J].航空学报,2016,37(9):2749-2756. JING Fulei, WANG Rongqiao, HU Dianyin, et al. Damage parameter determination and life modeling for high temperature fatigue of nickel-based single crystal superalloys[J].Acta Aeronautica et Astronautica Sinica, 2016, 37(9):2749-2756. (in Chinese)
[29]	王荣桥,蒋康河,胡殿印,等.基于主成分分析的镍基单晶高温疲劳寿命模型[J].航空动力学报,2016,31(6):1359-1367. WANG Rongqiao,JIANG Kanghe,HU Dianyin,et al.High temperature fatigue life model for single crystal nickel super-alloy based on principal component analysis[J]. Journal of Aerospace Power,2016,31(6):1359-1367.(in Chinese)
[30]	SHI D Q,HUANG J,YANG X G,et al.Effects of crystallographic orientations and dwell types on low cycle fatigue and life modeling of a SC superalloy[J]. International Journal of Fatigue,2013,49:31-39.