Effects of recrystallization on the low cycle fatigue behavior of directionally solidified superalloy DZ40M

稀有金属（英文版）, 2008, 27(4): 425-428.

^1, , ^2, , ^3, , ^4, , ^5,

1.Key Laboratory of the Ministry of Education of China for Anisotropy and Texture of Materials,Northeastern University,Shenyang 110004,China

2.Key Laboratory of the Ministry of Education of China for Anisotropy and Texture of Materials,Northeastern University,Shenyang 110004,China

3.Key Laboratory of the Ministry of Education of China for Anisotropy and Texture of Materials,Northeastern University,Shenyang 110004,China

4.Key Laboratory of the Ministry of Education of China for Anisotropy and Texture of Materials,Northeastern University,Shenyang 110004,China

5.Key Laboratory of the Ministry of Education of China for Anisotropy and Texture of Materials,Northeastern University,Shenyang 110004,China

Effects of recrystallization on the low cycle fatigue behavior of directionally solidified superalloy DZ40M

ZHAO Yang ^1, , WANG Lei ^2, , LI Hongyun ^3, , YU Teng ^4, , LIU Yang ^5,

1.Key Laboratory of the Ministry of Education of China for Anisotropy and Texture of Materials,Northeastern University,Shenyang 110004,China

2.Key Laboratory of the Ministry of Education of China for Anisotropy and Texture of Materials,Northeastern University,Shenyang 110004,China

3.Key Laboratory of the Ministry of Education of China for Anisotropy and Texture of Materials,Northeastern University,Shenyang 110004,China

4.Key Laboratory of the Ministry of Education of China for Anisotropy and Texture of Materials,Northeastern University,Shenyang 110004,China

5.Key Laboratory of the Ministry of Education of China for Anisotropy and Texture of Materials,Northeastern University,Shenyang 110004,China

Keywords： Co-base superalloy

The effects of recrystallization on low cycle fatigue behavior were investigated on directionally solidified Co-base superalloy DZAOM.Optical microscopy and SEM were used to examine the mierostructure and fracture surface of the specimens.The mechanical testing results demonstrated that the low cycle fatigue property of DZ40M significantly decreased with the partial reerystallization.Fatigue cracks initiate near the carbides and the grain boundaries with slip-bands.Both the fatigue crack initiation and propagation can be accelerated with the occurrences of recrystallized grain boundaries.

参考文献

[1]	Zambaldi C;Roters F;Raabe D;Glatzel U .Modeling and experiments on the indentation deformation and recrystallization of a single-crystal nickel-base superalloy[J].Materials Science and Engineering,2007,A454-455:433.
[2]	L. Wang;G. Xie;J. Zhang .On the role of carbides during the recrystallization of a directionally solidified nickel-base superalloy[J].Scripta materialia,2006(5):457-460.
[3]	王东林,李家宝,金涛,杨胜群,魏政,胡壮麒,付立群.DZ4镍基高温合金的再结晶[J].金属学报,2006(02):167-171.
[4]	Goldschmidt D;Paul U;Sahm P R.Porosity clusters and recrystallization in single-crystal components[A].TMS:Warrendale:PA,1992:155.
[5]	MASAKAZU OKAZAKI;ISSEI OHTERA;YOSHIO HARADA .Damage Repair in CMSX-4 Alloy without Fatigue Life Reduction Penalty[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2004(2):535-542.
[6]	Bürgel R;Portella P D;Preuhs J.Recrystallization in single crystals of nickel base superalloys[A].TMS:Warrendale:PA,2000:229.
[7]	Jiang W H .Relationship between Microstructures and Mechanical Properties of DZ40M Directionally Solidified Cobalt-base Superalloy[D].沈阳:中国科学院沈阳金属研究所,1999.
[8]	赵阳,王磊,于腾,丁海峰.定向凝固钴基高温合金DZ40M中碳化物析出与再结晶的交互作用[J].稀有金属材料与工程,2008(06):1032-1036.
[9]	Jiang W H;Yao X D;Guan H R;Hu Z Q .Carbide behavior during high temperature creep in DZ40M Co-base superalloy[J].Journal of Materials Science,1999,15(06):515.
[10]	H.-J.BURMEISTER;R.RICHTER .INVESTIGATIONS ON THE ORIGIN OF GRAIN BOUNDARY CRACKS IN FATIGUED f.c.c. METALS[J].Acta materialia,1997(2):709-714.
[11]	Yong Gao;J.S. Stolken;Mukul Kumar .High-cycle fatigue of nickel-base superalloy Rene 104 (ME3): Interaction of microstructurally small cracks with grain boundaries of known character[J].Acta materialia,2007(9):3155-3167.

上一张下一张

上一张下一张

计量

下载量()
访问量()

作者相关

在本站搜索
在百度学术搜索
在万方数据库搜索
在CNKI搜索

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%