Stress Relaxation Behavior of GH4145 Alloy

被引：0

作者：

Zeng Yanping ^{[1
]}

Yao Dazhi ^{[1
]}

Cai Wenhe ^{[2
]}

Wang Zhichun ^{[2
]}

Dong Shuqing ^{[2
]}

Li Weili ^{[2
]}

Zhao Weidong ^{[2
]}

机构：

[1] Univ Sci & Technol Beijing, Beijing 100083, Peoples R China

[2] North China Elect Power Res Inst Co Ltd, Beijing 100045, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2017年 / 46卷 / 11期

关键词：

GH4145; alloy; stress relaxation; microstructure; hardness; INCONEL X-750; GAMMA'; PRECIPITATION; SUPERALLOY; PARTICLES; GROWTH;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Stress relaxation behavior of GH4145 alloy at 566 degrees C was investigated. The results show that the alloy has good resistance to stress relaxation. Before the stress relaxation test, the GH4145 alloy is composed of equiaxed grains in a wide size range. After the stress relaxation test, the small particles grow obviously and thus the average particle size increases. Although the average grain size of the alloy obviously increases, the coarsening rate of secondary gamma' phase is very slow. The hardness of the alloy is increased by the increase of the volume fraction of cuboidal secondary gamma' particles with larger size and the precipitation of spherical tertiary gamma' particles with smaller size.

引用

页码：3316 / 3320

页数：5

共 17 条

[1] Academic Committee of the Superalloys CSM, 2012, CHIN SUP HDB, P672
[2] Age-hardening behavior of inconel X-750 superalloy
del Valle, JA
Picasso, AC
Alvarez, I
Romero, R
[J]. SCRIPTA MATERIALIA, 1999, 41 (03) : 237 - 243
[3] DOI M, 1985, MATER SCI ENG, V74, P139, DOI 10.1016/0025-5416(85)90427-6
[4] First-principles calculations of interfacial and segregation energies in α-Cr2O3
Fang, H. Z.
Wang, Y.
Shang, S. L.
Jablonski, Paul D.
Liu, Z. K.
[J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 2012, 24 (22)
[5] γ′ formation in superalloy U720LI
Furrer, DU
Fecht, HJ
[J]. SCRIPTA MATERIALIA, 1999, 40 (11) : 1215 - 1220
[6] THE EFFECT OF HEAT-TREATMENT ON THE MICROSTRUCTURE AND CORROSION-RESISTANCE OF INCONEL X-750 ALLOY
KEKKONEN, T
HANNINEN, H
[J]. CORROSION SCIENCE, 1985, 25 (8-9) : 789 - 803
[7] The formation of precipitate free zones along grain boundaries in a superalloy and the ensuing effects on its plastic deformation
Krol, T
Baither, D
Nembach, E
[J]. ACTA MATERIALIA, 2004, 52 (07) : 2095 - 2108
[8] National Development and Reform Commission, 2006, TECHN GUID HIGH TEMP
[9] The effects of a second aging treatment on the yield strength of γ′-hardened NIMONIC PE16-polycrystals having γ′-precipitate free zones
Nembach, E
Pesicka, J
Mohles, V
Baither, D
Vovk, V
Krol, T
[J]. ACTA MATERIALIA, 2005, 53 (08) : 2485 - 2494
[10] The splitting behavior of γ′ particles in Ni-based alloys
Qiu, YY
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 1998, 270 (1-2) : 145 - 153

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