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Acta Metall Sin  2016, Vol. 52 Issue (3): 257-263    DOI: 10.11900/0412.1961.2015.00281
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HIGH-CYCLE FATIGUE BEHAVIOR OF K416B Ni-BASED CASTING SUPERALLOY AT 700 ℃
Jun XIE,Jinjiang YU(),Xiaofeng SUN,Tao JIN
Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
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Abstract  

Ni-based speralloys have been widely used to make the blade parts of the advanced aeroengines for their high temperature tolerance and good mechanical property. During high temperature service, the materials endure the effects of temperature and alternating load, causing high-cycle fatigue deformation on the hot-end components. Meanwhile, the fatigue behaviors of the alloy are closely related to the deformation mechanisms and its microstructure characteristics, such as the size, distribution and morphology of γ' phase and carbides, and the fatigue fracture of the using materials possesses unpredictability. Therefore, investigating fatigue behaviors of the material is of significance in alloy design and life prediction. But the high-cycle fatigue behavior of K416B superalloy with high W content is still unclear up to now. For this reason, by means of high-cycle fatigue property measurement and microstructure observation, the high-cycle fatigue behavior of K416B Ni-based superalloy at 700 ℃ has been investigated. The results show that at 700 ℃ and stress ratio R=-1, the high-cycle fatigue life of K416B superalloy decreases with the stress increasing, and high-cycle fatigue strength of the alloy is 175 MPa. At the condition of low stress amplitude, the deformed dislocations may slip along different orientations in the matrix. With the stress amplitude increasing, the dislocations may shear into γ' phase and form the stacking fault. During tension and compression high-cycle fatigue, multiple slip systems are activated in the alloy, and the distortion occurs along various directions, resulting in stress concentration on the regions of γ +γ' eutectic and carbides. The crack sources may be initiated at the eutectic and blocky carbide near the surface of the alloy. As high-cycle fatigue goes on, the cracks propagate along the inter-dendrite in expansion region, and the typical cleavage fracture occurs in the final rupture region.

Key words:  K416B Ni-based superalloy      high-cycle fatigue      deformation mechanism      fracture feature     
Received:  08 June 2015     
Fund: Supported by National Basic Research Program of China (Nos.2010CB631200 and 2010CB631206) and National Natural Science Foundation of China (Nos.50931004 and 51571196)

Cite this article: 

Jun XIE, Jinjiang YU, Xiaofeng SUN, Tao JIN. HIGH-CYCLE FATIGUE BEHAVIOR OF K416B Ni-BASED CASTING SUPERALLOY AT 700 ℃. Acta Metall Sin, 2016, 52(3): 257-263.

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https://www.ams.org.cn/EN/10.11900/0412.1961.2015.00281     OR     https://www.ams.org.cn/EN/Y2016/V52/I3/257

Fig.1  SEM images of as-cast K416B superalloy dendrite morphology (b) blocky M 6C carbide (c) strip-like MC carbide (d) morphology of γ'phase
Fig.2  High-cycle fatigue stress-number of cycle (S-N) curve of K416B superalloy under the conditions of 700 ℃ and stress ratio R=-1
Fig.3  TEM images of K416B superalloy after high-cycle fatigue fracture under applied stresses of 180 MPa (a), 220 MPa (b) and 260 MPa (c, d) at 700 ℃ (SF--stacking fault; Figs.3c and d correspond to dislocation tangle at cross SF and SF torsion, respectively)
Fig.4  SEM images of K416B superalloy after high-cycle fatigue fracture under stresses of 180 MPa (a, b), 220 MPa (c, d) and 260 MPa (e, f) at 700 ℃ (Figs.4a and b correspond to slipping trace ending at blocky M 6C-carbide and g' phase torsion, Figs.4c and d correspond to torsion along different directions and cracks initiating at M6C-carbide, Figs.4e and f correspond to micro-void initiating at MC-carbide and cleavage fracture, respectively)
Fig.5  SEM images of fractures of K416B superalloy after high-cycle fatigue under stress of 220 MPa at 700 ℃ (a) macro-morphology (b) fatigue propagation zone (c) final rupture region
Fig.6  SEM images of fractures of K416B superalloy after high-cycle fatigue under stress of 260 MPa at 700 ℃ (a) macro-morphology (b) crack source (c) fatigue propagation zone (d) final rupture region
[1] Wang J, Zhou L Z, Sheng L Y, Guo J T.Mater Des, 2012; 39: 55
[2] Lin Y C, Wen D X, Deng J, Liu G, Chen J.Mater Des, 2014; 59: 115
[3] Francis E M, Grant B M B, Fonseca J Q D, Phillips P J, Mills M J, Daymond M R, Preuss M.Acta Mater, 2014; 74: 18
[4] Musinski W D, McDowell D L.Int J Fatigue, 2012; 37: 41
[5] Gao Y, St?lken J S, Kumar M, Ritchie R O.Acta Mater, 2007; 55:3155
[6] Chu Z K, Yu J J, Sun X F, Guan H R, Hu Z Q.Mater Sci Eng, 2008; A496: 355
[7] Chan K S.Int J Fatigue, 2010; 32: 1428
[8] Morrison D, Moosbrugger J.Int J Fatigue, 1997; 19: 51
[9] Woodford D A, Mowbray D F.Mater Sci Eng, 1974; 16: 35
[10] Lee D, Shin I, Kim Y, Koo J M, Seol C S.Int J Fatigue, 2014; 62: 62
[11] Reuchet J, Rémy L.Mater Sci Eng, 1988; A101: 55
[12] Madison J, Spowart J E, Rowenhorst D J, Fiedler J, Pollock T M.In: Reed R C, Green K A, Caron P, Gabb T P, Fahrmann M G, Huron E S, Woodard S A eds., Superalloys 2008, Pennsylvania: TMS, 2008: 881
[13] Du B N, Yang J X, Cui C Y, Sun X F.Mater Des, 2015; 65: 57
[14] Abbadi M, H?hner P, Belouettar S, Zenasni M.Mater Des, 2011; 32: 2710
[15] Kunz L, Luká? P, Kone?ná R.Int J Fatigue, 2010; 32: 908
[16] Kunz L, Luká? P, Kone?ná R, Fintová S.Int J Fatigue, 2012; 41: 47
[17] Liu Y, Yu J J, Xu Y, Sun X F, Guan H R, Hu Z Q. Mater Sci Eng, 2007; A454-455: 357
[18] Soula A, Renollet Y, Boivin D, Pouchou J L, Locq D, Caron P. Mater Sci Eng, 2009; A510-511: 301
[19] Sajjadi S A, Nategh S, Guthrie R I L.Mater Sci Eng, 2002; A325: 484
[20] Han G M, Zhang Z X, Li J G, Jin T, Sun X F, Hu Z Q.Acta Metall Sin, 2012; 48: 170
[20] (韩国明, 张振兴, 李金国, 金涛, 孙晓峰, 胡壮麒. 金属学报, 2012; 48: 170)
[21] Hirsch M R, Amaro R L, Antolovich S D, Neu T W.Int J Fatigue, 2014; 62: 53
[22] Gelmedin D, Lang K H.Procedia Eng, 2010; 2: 1343
[23] Moalla M, Lang K H, L?he D. Mater Sci Eng, 2001; A319-321: 647
[24] Evans W J, Screech J E, Williams S J.Int J Fatigue, 2008; 30: 257
[25] Huang Z W, Wang Z G, Zhu S J, Yuan F H, Wang F G.Mater Sci Eng, 2006; A432: 308
[26] Xie J, Yu J J, Sun X F, Jin T, Sun Y.Acta Metall Sin, 2015; 51: 458
[26] (谢君, 于金江, 孙晓峰, 金涛, 孙元. 金属学报, 2015; 51: 458)
[27] Xie J, Yu J J, Sun X F, Jin T, Yang Y H. Acta Metall Sin, 2015; 51:943
[27] (谢君, 于金江, 孙晓峰, 金涛, 杨彦红. 金属学报, 2015; 51: 943)
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