High-Temperature Failure by Perforation of Incoloy 800H Pigtails in Reformer Furnaces

1992 ◽  
pp. 354-357
Keyword(s):  
High Temperature ◽  
Incoloy 800H

Effect of Variation in Grain Size on High Temperature Creep Test of Fe-Ni-Cr Alloy

2013 ◽  
Vol 845 ◽  
pp. 51-55
Author(s):  
Esah Hamzah ◽  
Maureen Mudang ◽  
Muhammad Adil Khattak
Keyword(s):  
Grain Size ◽  
High Temperature ◽  
Creep Rate ◽  
Creep Damage ◽  
Grain Boundary Sliding ◽  
High Temperature Creep ◽  
Temperature Creep ◽  
Nickel Based Superalloy ◽  
Solution Treated ◽  
Incoloy 800H

Fe-Ni-Cr or known as Incoloy 800H and Haynes HR120 is a solid solution strengthened iron-nickel based superalloy which is extensively used in high temperature and corrosive environment. The effect of grain size in creep strength and creep rate comes through the grain boundary sliding and grain boundaries as barrier mechanism. This paper describes the effect of microstructural variation of Fe-Ni-Cr on the high temperature creep properties. The materials were heat treated at temperature 1050°C and 1200°C followed by water quenching process. The grain size of the samples of Incoloy 800H is 95.47μm for as-received, 122.81μm for solution treated at 1050°C and 380.95μm for solution treated at 1200°C. And the grain size of the samples of Haynes HR120 is 53.45μm for as-received, 61.50μm for solution treated at 1050°C and 158.27μm for solution treated at 1200°C. The creep damage investigation was carried out in the three different grain sizes of Fe-Ni-Cr superalloy at 900°C with stress at 100MPa. Rectangular section forms of specimens are used in the research. In all the tests conducted, the creep curves show primary, secondary and tertiary stages. The creep fracture surface were characterised by using scanning electron microscope. It was found that larger grain size results in lower creep rate for alloy Haynes HR120 but inverse result showed on alloy Incoloy 800H.

Improving high-temperature oxidation of Incoloy 800H by laser cladding

1994 ◽  
Vol 70 (1) ◽  
pp. 107-113 ◽  
Author(s):  
J. de Damborenea ◽  
V. López ◽  
A.J. Vázquez
Keyword(s):  
High Temperature ◽  
Laser Cladding ◽  
High Temperature Oxidation ◽  
Temperature Oxidation ◽  
Incoloy 800H

Failure analysis of high-temperature reformer tube of Incoloy 800H in synthetic ammonia installation

2021 ◽  
Vol 121 ◽  
pp. 105122
Author(s):  
Jin Shi ◽  
Zhi-Yuan Han ◽  
Fa-Kun Zhuang ◽  
Min Xu ◽  
Guo-Shan Xie ◽  
...  
Keyword(s):  
High Temperature ◽  
Failure Analysis ◽  
Incoloy 800H ◽  
Reformer Tube

The effect of chlorine on the high temperature corrosion of SiO2-coated Incoloy 800H

1993 ◽  
Vol 03 (C9) ◽  
pp. C9-921-C9-930 ◽  
Author(s):  
V. A.C. Haanappel ◽  
H. D. van Corbach ◽  
R. Hofman ◽  
T. Fransen ◽  
P. J. Gellings
Keyword(s):  
High Temperature ◽  
High Temperature Corrosion ◽  
Incoloy 800H ◽  
Effect Of Chlorine

Influence of Thermo-Mechanical Processing on the Microstructure of Beryllia Dispersed Nickel Alloys

1973 ◽  
Vol 31 ◽  
pp. 184-185
Author(s):  
M.S. Grewal ◽  
S.A. Sastri ◽  
N.J. Grant
Keyword(s):  
High Temperature ◽  
Nickel Alloys ◽  
Thermomechanical Processing ◽  
Cold Work ◽  
High Temperature Strength ◽  
Strengthening Effect ◽  
Mechanical Processing ◽  
Uniform Dispersion ◽  
Oxide Particles ◽  
Nickel Base

Currently there is a great interest in developing nickel base alloys with fine and uniform dispersion of stable oxide particles, for high temperature applications. It is well known that the high temperature strength and stability of an oxide dispersed alloy can be greatly improved by appropriate thermomechanical processing, but the mechanism of this strengthening effect is not well understood. This investigation was undertaken to study the dislocation substructures formed in beryllia dispersed nickel alloys as a function of cold work both with and without intermediate anneals. Two alloys, one Ni-lv/oBeo and other Ni-4.5Mo-30Co-2v/oBeo were investigated. The influence of the substructures produced by Thermo-Mechanical Processing (TMP) on the high temperature creep properties of these alloys was also evaluated.

Application of TEM to Deformation, Wear, and Fracture of Ceramics

1974 ◽  
Vol 32 ◽  
pp. 472-473
Author(s):  
B. J. Hockey
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Mechanical Behavior ◽  
Brittle Materials ◽  
High Temperature Strength ◽  
Wide Range ◽  
Corrosive Environments ◽  
Further Development

Ceramics, such as Al2O3 and SiC have numerous current and potential uses in applications where high temperature strength, hardness, and wear resistance are required often in corrosive environments. These materials are, however, highly anisotropic and brittle, so that their mechanical behavior is often unpredictable. The further development of these materials will require a better understanding of the basic mechanisms controlling deformation, wear, and fracture.The purpose of this talk is to describe applications of TEM to the study of the deformation, wear, and fracture of Al2O3. Similar studies are currently being conducted on SiC and the techniques involved should be applicable to a wide range of hard, brittle materials.

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