Fatigue resistance of high-temperature alloys under cyclic temperature variation. Report 1. Study technique and results

1994 ◽  
Vol 26 (3) ◽  
pp. 175-180 ◽  
Author(s):  
V. T. Troshchenko ◽  
B. A. Gryaznov ◽  
Yu. B. Yamshanov
Keyword(s):  
High Temperature ◽  
Temperature Variation ◽  
Fatigue Resistance ◽  
High Temperature Alloys ◽  
Cyclic Temperature

HAYNES ALLOY No. 625SQ

Alloy Digest ◽  
2003 ◽  
Vol 52 (8) ◽  
Keyword(s):  
Grain Size ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Fatigue Resistance ◽  
Heat Treating ◽  
Temperature Performance ◽  
Haynes Alloy

Abstract Haynes 625SQ alloy is a modification of Haynes 625 alloy (see Alloy Digest Ni-354, January 1988) with tighter controls on chemistry and a finer grain size for fatigue resistance up to 680 deg C (1250 deg F). This datasheet provides information on composition, physical properties, microstructure, elasticity, and tensile properties as well as fatigue. It also includes information on high temperature performance as well as heat treating. Filing Code: Ni-612. Producer or source: Haynes International Inc.

Effect of Cold Isostatic Pressing on the Pore Size and Distribution in the High-Chromium High-Temperature Alloys Fabricated by Selective Laser Melting of Metallic Powders

2020 ◽  
Vol 2020 (11) ◽  
pp. 1283-1291
Author(s):  
E. Yu. Remshev ◽  
G. A. Vorob’eva ◽  
A. R. Avetisyan ◽  
P. V. Elfimov ◽  
G. O. Afim’in ◽  
...  
Keyword(s):  
High Temperature ◽  
Pore Size ◽  
Selective Laser Melting ◽  
Cold Isostatic Pressing ◽  
Laser Melting ◽  
High Chromium ◽  
Isostatic Pressing ◽  
Metallic Powders ◽  
High Temperature Alloys

Segregation of Refractory Metals at Grain Boundaries in High-Temperature Alloys

2020 ◽  
Vol 2020 (11) ◽  
pp. 1292-1299
Author(s):  
I. M. Razumovskii ◽  
V. I. Razumovskiy ◽  
I. A. Logachev ◽  
A. O. Rodin ◽  
M. I. Razumovsky
Keyword(s):  
High Temperature ◽  
Grain Boundaries ◽  
Refractory Metals ◽  
High Temperature Alloys

scholarly journals Evaluation on the Bond Capacity of the Fire-Protected FRP Bonded to Concrete Under High Temperature

2021 ◽  
Vol 15 (1) ◽  
Author(s):  
Soo-yeon Seo ◽  
Jong-wook Lim ◽  
Su-hyun Jeong
Keyword(s):  
High Temperature ◽  
Critical Temperature ◽  
Temperature Variation ◽  
Fire Resistance ◽  
Fire Protection ◽  
Element Analysis ◽  
External Temperature ◽  
Near Surface ◽  
Board Type ◽  
The Face

AbstractTo figure out the change in the reinforcing effect of FRP system used for the retrofit of RC beam when it is exposed to high temperature, it is required to evaluate not only the behavior of the entire beam, but also the bond performance at anchorage zone through a bond test according to the increase of external temperature. Moreover, the study to find various fire-protection methods is necessary to prevent the epoxy from reaching the critical temperature during an exposure to high temperature. In this manner, the fire-resistance performances of externally bonded (EB) FRP and near-surface-mounted (NSM) FRP to concrete block were evaluated by high-temperature exposure tests after performing a fire-protection on the surface in this paper. Board-type insulation with mortar was considered for the fire-protection of FRP system. After the fire-protection of the FRPs bonded to concrete blocks, an increasing exposure temperature was applied to the specimens with keeping a constant shear bond stress between concrete and the FRP. Based on the result, the temperature when the bond strength of the FRP disappears was evaluated. In addition, a finite element analysis was performed to find a proper method for predicting the temperature variation of the epoxy which is fire-protected with board-type insulation during the increase of external temperature. As a result of the test, despite the same fire-protection, NSM specimens were able to resist 1.54–2.08 times higher temperature than EB specimens. In the design of fire-protection of FRP system with the board-type insulation, it is necessary to consider the transfer from sides as well as the face with FRP. If there is no insulation of FP boards on the sides, the epoxy easily reaches its critical temperature by the heat penetrated to the sides, and increasing the thickness of the FP board alone for the face with FRP does not increase the fire-resistance capacity. As a result of the FE analysis, the temperature variation at epoxy can be predicted using the analytical approach with the proper thermal properties of FP mortar and board.

Roles definition of TiN particles in enhancing the creep properties of IN718C high temperature alloys

2021 ◽  
pp. 161441
Author(s):  
Yuantao Zhao ◽  
Rui Wang ◽  
Yanle Sun ◽  
Lianbo Wang ◽  
Xinfeng Wu ◽  
...  
Keyword(s):  
High Temperature ◽  
Creep Properties ◽  
High Temperature Alloys ◽  
Definition Of

Microstructure evolution by neutron irradiation during cyclic temperature variation

1994 ◽  
Vol 212-215 ◽  
pp. 241-245 ◽  
Author(s):  
M. Kiritani ◽  
T. Yoshiie ◽  
M. Iseki ◽  
S. Kojima ◽  
K. Hamada ◽  
...  
Keyword(s):  
Temperature Variation ◽  
Neutron Irradiation ◽  
Microstructure Evolution ◽  
Cyclic Temperature
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