High Bs Fe-B-P-C-Cu nanocrystalline alloy with longtime annealing stability and low heating rate sensitivity

2022 ◽  
Vol 543 ◽  
pp. 168623
Author(s):  
Yuluo Li ◽  
Ningning Shen ◽  
Yidong Wu ◽  
Suo zhang ◽  
Zhanbing He ◽  
...  
Keyword(s):  
Heating Rate ◽  
Rate Sensitivity ◽  
Nanocrystalline Alloy

Aeroassist flight experiment heating-rate sensitivity study

10.2514/3.287 ◽  
1991 ◽  
Vol 5 (4) ◽  
pp. 456-462 ◽  
Author(s):  
W. C. Rochelle ◽  
P. C. Ting ◽  
S. A. Bouslog ◽  
S. R. Mueller ◽  
J. E. Colovin ◽  
...  
Keyword(s):  
Heating Rate ◽  
Rate Sensitivity ◽  
Sensitivity Study ◽  
Flight Experiment

The Influence of RTA Heating Rate on the TiSi2 and Si - TiSi2 Interface Roughness

1994 ◽  
Vol 342 ◽  
Author(s):  
A. A. M. Lagana ◽  
M. C. Valente ◽  
A. G. Pedrine ◽  
J. C. de Souza Filho ◽  
J. W. Stuart ◽  
...  
Keyword(s):  
Light Scattering ◽  
Heating Rate ◽  
Leakage Current ◽  
Laser Light ◽  
Rate Sensitivity ◽  
Laser Light Scattering ◽  
Interface Roughness ◽  
Heating Rates ◽  
Oxygen Contamination ◽  
Ti Films

ABSTRACTIn TiSi2 metallized devices, the second distribution of leakage current (I>lμA) is caused by the Si/TiSi2 interface roughness. In this work, 40gm thick Ti films are sputtered onto Si waters. RTA was done in N2 atmosphere. Heating rates of 0, 0.5, 1, 5, and 100°C S−-1 are examined. Samples are characterized by AFM, RBS, XRD and laser light scattering methods. The parameters related to roughness are heating rate sensitivity and oxygen contamination which decreases the roughness on the interface.

Aerobrake heating rate sensitivity study for the Aeroassist Flight Experiment (AFE)

1989 ◽  
Author(s):  
W. ROCHELLE ◽  
P. TING ◽  
S. MUELLER ◽  
J. COLOVIN ◽  
S. BOUSLOG ◽  
...  
Keyword(s):  
Heating Rate ◽  
Rate Sensitivity ◽  
Sensitivity Study ◽  
Flight Experiment

Unique influence of heating rate on the magnetic softness of Fe81.5Si0.5B4.5P11Cu0.5C2 nanocrystalline alloy

2019 ◽  
Vol 471 ◽  
pp. 148-152 ◽  
Author(s):  
Lixian Jiang ◽  
Yan Zhang ◽  
Xing Tong ◽  
Tsuyoshi Suzuki ◽  
Akihiro Makino
Keyword(s):  
Heating Rate ◽  
Nanocrystalline Alloy ◽  
Magnetic Softness

The effects of strain and strain rate on residual microstructures in copper

1986 ◽  
Vol 44 ◽  
pp. 420-421
Author(s):  
M. F. Stevens ◽  
P. S. Follansbee
Keyword(s):  
Strain Rate ◽  
Applied Stress ◽  
Threshold Stress ◽  
Rate Sensitivity ◽  
Viscous Drag ◽  
Strain Rates ◽  
Strain And Strain Rate ◽  
Threshold Strength ◽  
Mechanism Transition ◽  
Intrinsic Strength

The strain rate sensitivity of a variety of materials is known to increase rapidly at strain rates exceeding ∼103 sec-1. This transition has most often in the past been attributed to a transition from thermally activated guide to viscous drag control. An important condition for imposition of dislocation drag effects is that the applied stress, σ, must be on the order of or greater than the threshold stress, which is the flow stress at OK. From Fig. 1, it can be seen for OFE Cu that the ratio of the applied stress to threshold stress remains constant even at strain rates as high as 104 sec-1 suggesting that there is not a mechanism transition but that the intrinsic strength is increasing, since the threshold strength is a mechanical measure of intrinsic strength. These measurements were made at constant strain levels of 0.2, wnich is not a guarantee of constant microstructure. The increase in threshold stress at higher strain rates is a strong indication that the microstructural evolution is a function of strain rate and that the dependence becomes stronger at high strain rates.

A TEM study of the influence of microstructure on the superplastic behavior of a U-5.8 wt.% Nb alloy

1986 ◽  
Vol 44 ◽  
pp. 568-569
Author(s):  
G. Mackiewicz Ludtka
Keyword(s):  
Grain Size ◽  
Heating Rate ◽  
Phase Field ◽  
Single Phase ◽  
Superplastic Behavior ◽  
Two Phase ◽  
Single Phase Field

Historically, metals exhibit superplasticity only while forming in a two-phase field because a two-phase microstructure helps ensure a fine, stable grain size. In the U-5.8 Nb alloy, superplastici ty exists for up to 2 h in the single phase field (γ1) at 670°C. This is above the equilibrium monotectoid temperature of 647°C. Utilizing dilatometry, the superplastic (SP) U-5.8 Nb alloy requires superheating to 658°C to initiate the α+γ2 → γ1 transformation at a heating rate of 1.5°C/s. Hence, the U-5.8 Nb alloy exhibits an anomolous superplastic behavior.

Optimization of the time the chromatograph thermostats exit to a given temperature

2020 ◽  
pp. 40-45
Author(s):  
Nadezhda O. Vzduleva ◽  
Valery B. Gitlin
Keyword(s):  
Heating Rate ◽  
Entire Range ◽  
Gas Chromatograph ◽  
Heating And Cooling ◽  
Operating Temperatures ◽  
The Stability

The problems of ensuring the stability of the temperature of the chromatographic experiment carried out using a serial gas chromatograph LGH-3000 are considered. Limiting the permissible heating rate of the chromatograph thermostats does not allow a quick transition to the new conditions of the chromatographic experiment in accordance with the requirements of the technical conditions. The processes of heating and cooling the thermostat are analyzed. It is shown that the ratio of the duration of the interval equal to the sum of the durations of the heating and cooling intervals to the duration of the heating interval is inversely proportional to the temperature of the chromatographic experiment. Based on this situation, an empirical algorithm is proposed for heating the thermostat to a given temperature, which made it possible to reduce the time it takes to reach a given temperature in the entire range of operating temperatures.

Effects of annealing temperature on the microstructure and initial permeability of nanocrystalline alloy Fe73.5Cu1Mo3Si13.5B9

1998 ◽  
Vol 13 (11) ◽  
pp. 3241-3246 ◽  
Author(s):  
X.Y. Zhang ◽  
J.W. Zhang ◽  
F.R. Xiao ◽  
J.H. Liu ◽  
K.Q. Zhang ◽  
...  
Keyword(s):  
Annealing Temperature ◽  
Nanocrystalline Alloy ◽  
Initial Permeability
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