scholarly journals Temperature Dependence of the Solid Solution Strengthening Effect of Group IVb, Vb and VIb Elements on the High Temperature Creep Behaviors of Carbon Free 25Cr-35Ni Steels

1982 ◽  
Vol 68 (6) ◽  
pp. 690-697 ◽  
Author(s):  
Yoshihiro KONDO ◽  
Takashi MATSUO ◽  
Ryohei TANAKA
Keyword(s):  
Solid Solution ◽  
High Temperature ◽  
Temperature Dependence ◽  
Strengthening Effect ◽  
High Temperature Creep ◽  
Solid Solution Strengthening ◽  
Temperature Creep ◽  
Solution Strengthening

Mechanical Properties of Ga1–xInxAs

1985 ◽  
Vol 53 ◽  
Author(s):  
S. Guruswamy ◽  
J.P. Hirth ◽  
K.T. Faber
Keyword(s):  
Mechanical Properties ◽  
Solid Solution ◽  
High Temperature ◽  
Strengthening Effect ◽  
Plateau Stress ◽  
Solid Solution Strengthening ◽  
Stress Region ◽  
Solution Strengthening ◽  
Concentration Levels ◽  
Undoped Gaas

ABSTRACTSubstantial solid solution strengthening of GaAs by In acting as InAs4 units has recently been predicted. This strengthening could account for the reduction of dislocation density in GaAs single crystals grown from the melt. High temperature hardness measurements up to 700ºC have been carried out on (100) GaAs and Ga0.9975 In0.0025 As wafers. Results show a significant strengthening effect in In—doped GaAs even at concentration levels of about 0.2 wt%. A temperature independent flow stress region is observed for both these alloys. The In—doped GaAs shows ahigher plateau stress level compared to the undoped GaAs. The results are consistent with the solid solution strengthening model.

scholarly journals The Importance of Diffusivity and Partitioning Behavior of Solid Solution Strengthening Elements for the High Temperature Creep Strength of Ni-Base Superalloys

2020 ◽  
Vol 51 (12) ◽  
pp. 6195-6206 ◽  
Author(s):  
S. Giese ◽  
A. Bezold ◽  
M. Pröbstle ◽  
A. Heckl ◽  
S. Neumeier ◽  
...  
Keyword(s):  
Solid Solution ◽  
High Temperature ◽  
Creep Resistance ◽  
Elevated Temperatures ◽  
Solid Solution Hardening ◽  
Stress Regime ◽  
Solid Solution Strengthening ◽  
Solution Strengthening ◽  
The Individual ◽  
Partitioning Behavior

AbstractThe creep resistance of single-crystalline Ni-base superalloys at elevated temperatures depends among others on solid solution strengthening of the γ-matrix. To study the influence of various solid solution strengtheners on the mechanical properties, a series of Ni-base superalloys with the same content of different alloying elements (Ir, Mo, Re, Rh, Ru, W) or element combinations (MoW, ReMo, ReW) was investigated. Nanoindentation measurements were performed to correlate the partitioning behavior of the solid solution strengtheners with the hardness of the individual phases. The lowest γ′/γ-hardness ratio was observed for the Re-containing alloy with the strongest partitioning of Re to the γ-matrix. As a result of the creep experiments in the high-temperature/low-stress regime (1373 K (1100 °C)/140 MPa), it can be concluded that solid solution hardening in the γ-phase plays an essential role. The stronger the partitioning to the γ-phase and the lower the interdiffusion coefficient of the alloying element, the better the creep resistance. Therefore, the best creep behavior is found for alloys containing high contents of slow-diffusing elements that partition preferably to the γ-phase, particularly Re followed by W and Mo.

High-Temperature Creep of Equimolecular NiOCoO Solid Solution

1984 ◽  
Vol 85 (2) ◽  
pp. 445-448 ◽  
Author(s):  
A. Dominguez-Rodbiguez ◽  
J. Cabbeba-Uaño ◽  
R. Marquez ◽  
J. Castaing
Keyword(s):  
Solid Solution ◽  
High Temperature ◽  
High Temperature Creep ◽  
Temperature Creep

MTEK 25-35MA

Alloy Digest ◽  
2016 ◽  
Vol 65 (9) ◽  
Keyword(s):  
Solid Solution ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Creep Strength ◽  
Heat Treating ◽  
Casting Alloy ◽  
High Temperature Creep ◽  
Temperature Creep ◽  
Temperature Performance

Abstract MTEK 25-35MA is a solid solution microalloyed Fe-Ni-Cr-Nb casting alloy with good high-temperature creep strength. It is intended for use in pyrolysis cracker furnaces. This datasheet provides information on composition, physical properties, and tensile properties as well as creep. It also includes information on high temperature performance as well as casting, heat treating, machining, and joining. Filing Code: SS-1249. Producer or source: MetalTek International. Originally published July 2016, revised September 2016.

Effect of Stress on Creep at High Temperatures

1957 ◽  
Vol 24 (2) ◽  
pp. 207-213
Author(s):  
H. Laks ◽  
C. D. Wiseman ◽  
O. D. Sherby ◽  
J. E. Dorn
Keyword(s):  
Activation Energy ◽  
Solid Solution ◽  
High Temperature ◽  
Creep Rate ◽  
Pure Aluminum ◽  
Dislocation Climb ◽  
Experimental Investigations ◽  
High Temperature Creep ◽  
Self Diffusion ◽  
Temperature Creep

Abstract Experimental investigations on pure aluminum and its dilute solid-solution alloys revealed that the high-temperature creep rate ϵ̇ is related to the stress σ by ϵ̇ ∼ σn for low stresses and ϵ̇ ∼ eBσ for high stresses where n and B are constants independent of the creep strain and temperature. According to a preliminary dislocation-climb model for high-temperature creep, the activation energy for creep is that for self-diffusion, the effect of stress on the creep rate depends on the number of active Frank-Read sources, and the rate of climb depends on the structure as determined by the pattern of climbing dislocations. Many of the experimental observations on high-temperature creep can be accounted for by this model.

The Effects of Alloy Addittons of Si and Transitton Metal Elements on the Mechanical Properties Of B-Doped Ds Ni3Al

1990 ◽  
Vol 213 ◽  
Author(s):  
Yun Zhang ◽  
Dongliang Lin(T.L.Lin)
Keyword(s):  
Solid Solution ◽  
Flow Stress ◽  
Mechanical Behavior ◽  
Temperature Dependence ◽  
Liquid Nitrogen Temperature ◽  
Tensile Tests ◽  
Positive Temperature ◽  
Metal Elements ◽  
Solid Solution Strengthening ◽  
Solution Strengthening

ABSTRACTThe temperature dependence of the flow stress in the B-doped DS Ni3Al containing Si as well as transition metal elements was systematically investigated by tensile tests. The effects of the alloy elements on the magnitude of the positive temperature dependence of the flow stress were evaluated. The calculated activation energy which results in the anomalous mechanical behavior the Ni3Al decreases for each element addition. The flow stress near liquid nitrogen temperature, taken as a measure of the degree of solid solution strengthening, increases linearly with the element concentration. The influences of the element additions on the solid solution strengthening were discussed. Also discussed were the mechanisms of the anomalous mechanical behavior in the Ni3 Al affected by the element additions.

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