Structural transformations during heat treatment of glass

1966 ◽  
Vol 23 (8) ◽  
pp. 413-415
Author(s):  
T. D. Andryukhina
Keyword(s):  
Heat Treatment ◽  
Structural Transformations

Effect of heat treatment on the structural transformations and properties of high-nitrogen chromium steels

2000 ◽  
Vol 42 (6) ◽  
pp. 221-225 ◽  
Author(s):  
V. M. Blinov ◽  
A. V. Elistratov ◽  
A. G. Kolesnikov ◽  
A. G. Rakhshtadt ◽  
A. I. Plokhikh ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Structural Transformations ◽  
High Nitrogen ◽  
Chromium Steels

Ni/Si-Based Contacts to GaN: Thermally Activated Structural Transformations Leading to Ohmic Behavior

1998 ◽  
Vol 537 ◽  
Author(s):  
E. Kaminska ◽  
A. Piotrowska ◽  
J. Jasinski ◽  
J. Kozubowski ◽  
A. Barcz ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Heat Treatment ◽  
Secondary Ion Mass Spectrometry ◽  
Structural Transformations ◽  
Thermally Activated ◽  
Ohmic Behavior ◽  
Transmission Electron ◽  
Dopant Atoms ◽  
Ohmic Contact Formation ◽  
Secondary Ion

AbstractStructural transformations in Ni/Si-based contacts to GaN occurring under heat treatment have been studied using transmission electron microscopy and secondary ion mass spectrometry. Transition from non-ohmic to ohmic behavior correlates with reaction between Ni and Si, and decomposition of the initially formed interfacial Ni:Ga:N layer. Transport of dopant atoms from metallization into GaN testifies in favour of the SPR process of ohmic contact formation

scholarly journals Analytical models of austenite transformation in steel with allowance for internal stresses

2018 ◽  
pp. 371-383
Author(s):  
S.V. Bobyr
Keyword(s):  
Experimental Data ◽  
Heat Treatment ◽  
Experimental Study ◽  
Hot Deformation ◽  
Structural Transformations ◽  
Analytical Models ◽  
Theoretical Expression ◽  
Internal Stresses ◽  
Kinetics Of ◽  
Comprehensive Study

The aim of the work is to review the analytical models of austenite decay, taking into account the internal stresses obtained by various authors. It is shown that a common drawback of the known works is the neglect of the effect of the stress-strain state arising during the heat treatment of parts on the kinetics of structural transformations, while the available experimental data indicate a significant effect of stresses and strains on structural transformations. It has been established that the experimental data accumulated to date do not allow reliably describing the effect of the stress state on structural transitions during the heat treatment of steels for the hot deformation tool. A simple theoretical expression is proposed for calculating the amount of martensite formed as a function of the voltage in the γ phase. It is theoretically shown that taking into account the voltage acting in the γ phase leads to an increase in the temperature of the end of the formation of martensite. Experimental study of this effect is especially convenient to carry out in isothermal conditions under uniaxial tension. It is shown that in order to reliably predict the structural state of the hot deformation tool during heat treatment, it is necessary to conduct a comprehensive study related to the experimental study of the effect of stresses on all types of transformations and the creation of an adequate mathematical model of austenite decomposition based on the obtained experimental data.

Sign in / Sign up

Export Citation Format

Share Document