HIGH TEMPERATURE FATIGUE CRACK GROWTH BEHAVIOR OF A NOVEL POWDER METALLURGY SUPERALLOY FGH98

YANG Jian, DONG Jianxin, ZHANG Maicang

doi:10.3724/SP.J.1037.2012.00445

Acta Metall Sin >

2013 , Vol. 49 >Issue 1: 71 - 80

DOI: https://doi.org/10.3724/SP.J.1037.2012.00445

HIGH TEMPERATURE FATIGUE CRACK GROWTH BEHAVIOR OF A NOVEL POWDER METALLURGY SUPERALLOY FGH98

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1.School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083
2.High Temperature Materials Research Institute, Central Iron and Steel Research Institute, Beijing 100081

Received date: 2012-07-24

Revised date: 2012-09-07

Online published: 2013-01-11

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Abstract

Powder metallurgy superalloys are important materials for manufacturing aero engine turbine disks which are subjected to loading in the forms of fatigue and creep-fatigue in service. In order to meet the increasing demands for advanced aero engines with high thrust-weight ratios, a novel generation of Ni-based powder metallurgy superalloy FGH98 was developed, which was expected to have high strength and good damage tolerance property. For the sake of examining the fatigue crack growth resistance of FGH98, the fatigue crack growth rate of this novel superalloy was investigated at 650 ℃ in air and then compared with those of the first two generations of powder metallurgy superalloys FGH95 and FGH96. The effects of microstructures and hold--time on the fatigue crack growth behavior of FGH98 were studied. It was found that the fatigue crack growth resistance of FGH98 was significantly improved in comparison with those of FGH95 and FGH96. Conducting proper cooling methods after solution could make the secondary and tertiaryγ’ phase precipitate in a uniform order, causing that the alloy could have good fatigue crack propagation resistance. It was also found that FGH98 with coarser grains showed a lower fatigue crack growth rate, especially in the near--threshold regime, and its fatigue crack growth rate increased with increasing hold-time, and correspondingly, its fracture mode changed from a mixture of transgranular-intergranular into pure intergranular.

Key words：

FGH98

; fatigue crack growth; γ’phase; grain size

Cite this article

YANG Jian, DONG Jianxin, ZHANG Maicang . HIGH TEMPERATURE FATIGUE CRACK GROWTH BEHAVIOR OF A NOVEL POWDER METALLURGY SUPERALLOY FGH98[J]. Acta Metall Sin, 2013 , 49(1) : 71 -80 . DOI: 10.3724/SP.J.1037.2012.00445

References

[1] Zhang Y W, Shangguan Y H. Powder Metall Ind, 2004; 14(6): 30

(张义文, 上官永恒. 粉末冶金工业, 2004; 14(6): 30)

[2] Zou J W, Wang W X. J Aeronaut Mater, 2006; 26: 244

(邹金文, 汪武祥. 航空材料学报, 2006; 26: 244)

[3] Wang P, Dong J X, Zhang Y W, Xie X S. Rare Met Mater Eng, 2010; 39: 157

(王璞, 董建新, 张义文, 谢锡善. 稀有金属材料与工程, 2010; 39: 157)

[4] Raisson G. Powder Metall, 2008; 50: 10

[5] Cheng X, Dong J X, Zhang M C. World Iron Steel, 2011; 11(5): 43

(程茜, 董建新, 张麦仓. 世界钢铁, 2011; 11(5): 43)

[6] Miao J S, Pollock T M, Jones J W. Acta Mater, 2009; 57: 5964

[7] Findley K O, Saxena A. Metall Mater Trans, 2006; 37A: 1469

[8] Alniak M O, Bedir F. Mater Sci Eng, 2006; B130: 254

[9] Viswanathan G B, Sarosi P M, Whitis D H, Mills M J. Mater Sci Eng, 2005; A400--401: 489

[10] Miao J S, Pollock T M, Jones J W. In: Reed R C, Green K A, Caron P eds.,

Proceeding of the 11th International Symposium on Superalloy, Warrendale: TMS, 2008: 589

[11] Olson G B, Jou H J, Jung J, Sebastian J T, Misra A, Locci I, Hull D.

In: Reed R C, Green K A, Caron P eds., Proc 11th International Symposium on Superalloy, Warrendale: TMS, 2008: 923

[12] Gabb T P, Telesman J, Kantzos P T, Smith J W, Browning P F. In: Green K A, Pollock T M, Harada H eds.,

Proc 10th International Symposium on Superalloy, Warrendale: TMS, 2004: 269

[13] Jia J, Tao Y, Zhang Y W. Rare Met, 2009; 28(spec): 136

[14] Liu Y, Tao Y, Jia J. J Aeronaut Mater, 2011; 31(6): 12

(刘洋, 陶宇, 贾建. 航空材料学报, 2011; 31(6): 12)

[15] Liu Y, Tao Y, Jia J. Powder Metall Ind, 2011; 21(2): 14

(刘洋, 陶宇, 贾建. 粉末冶金工业, 2011; 21(2): 14)

[16] Jia J, Tao Y, Zhang Y W. J Iron Steel Res, 2011; 23(suppl): 482

(贾建, 陶宇, 张义文. 钢铁研究学报, 2011; 23(增刊): 482)

[17] Wu K, Liu G Q, Hu B F, Zhang Y W, Tao Y, Liu J T. Rare Met Mater Eng, 2011; 40: 1966

(吴凯, 刘国权, 胡本芙, 张义文, 陶宇, 刘建涛. 稀有金属材料与工程, 2011; 40: 1966)

[18] Leo Prakash D G, Walsh M J, Maclachlan D, Korsunsky A M. Int J Fatigue, 2009; 31: 1966

[19] Pedron J P, Pineau A. Mater Sci Eng, 1982; A56: 143

[20] Suresh S, Zamiski C F, Richie R O. Metall Trans, 1981; 12A: 1435

[21] Jackson M P, Reed R C. Mater Sci Eng, 1999; A259: 85

[22] Telesman J, Gabb T, Garg A, Bonacuse P, Gayda R.

In: Reed R, Green K, Caron P, Gabb T, Fahrmann M, Huron E, Woodward S eds.,

Proc 11th International Symposium on Superalloy, Warrendale: TMS, 2008: 807

[23] Riedel H, Rice J R. In: Paris P C ed., Proc 12th Conference on Fracture Mechanics,

Special Technical Publication 700, Philadelphia: American Society for Testing and Materials, 1980: 112

[24] Molins R, Hochsteter G, Chassaigne J C, Andrieu E. Acta Mater, 1997; 45: 633

[25] Lee S Y, Lu Y L, Liaw P K, Chen L J, Thompson S A, Blust J W, Browning P F, Bhattacharya A K,

Aurrecoechea J M, Klarstrom D L. J Mater Sci, 2009; 44: 2945

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