scholarly journals Using thermo-calc software to produce the phase diagram of Zn-Te system

2020 ◽  
Author(s):  
Shadia IKHMAYİES
Keyword(s):  
Phase Diagram ◽  
Thermo Calc Software

Phase Diagram Calculation and Experimental Study on the New Type Mg-Al-Zn-Ca-Sr Alloy in the Mg-Rich Region

2010 ◽  
Vol 650 ◽  
pp. 246-252 ◽  
Author(s):  
Su Qin Luo ◽  
Ai Tao Tang ◽  
Fu Sheng Pan ◽  
Yi Chen ◽  
Zhong Xue Feng
Keyword(s):  
Phase Diagram ◽  
Equilibrium Phase ◽  
Solidification Process ◽  
Secondary Phase ◽  
Calculated Phase Diagram ◽  
Rich Region ◽  
Thermo Calc Software ◽  
Calculation Results ◽  
New Type ◽  
Equilibrium Phases

Calculated phase diagram reveals important phase details for a new type muti-component magnesium alloy. Isothermal sections at 25°C of Mg-Ca-Sr, , Mg-2.74Al-Ca-Sr, Mg-2.74Al-0.79Zn-Ca-Sr system in the Mg-rich region were calculated using CALPHAD method, Thermo-Calc software and Mg-Al-Zn-Ca-Sr quinary database. The equilibrium phase composition in the Mg-rich region was analyzed. The equilibrium phases and solidification process of Mg-2.74Al-0.79Zn-0.68Ca-0.03Sr quinary alloy was calculated. The calculation results were consistent with the experimental results of SEM-EDX analysis and DSC spectrum. The solidification process of Mg-2.74Al-0.79Zn-0.68Ca-0.03Sr quinary alloy is as follow : α-Mg precipitates at 621°C, secondary phase C15-Al2(Ca, Sr) and Gamma-Mg17Al12 precipitate at around 520°C and 160°C in sequence, A4B-(Al4Ca,Al4Sr) may precipitate at around 460°C.

Calculation of Aluminum Equivalent Based on Thermo-Calc Software in Ti-Al-Nb Ternary System

2014 ◽  
Vol 788 ◽  
pp. 144-149 ◽  
Author(s):  
Hui Min Yang ◽  
Liang Shun Luo ◽  
Mei Hui Song ◽  
Hai Qun Qi ◽  
Chun Yan Wang ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Ternary Phase ◽  
Ternary Phase Diagram ◽  
Primary Phase ◽  
Ternary Alloys ◽  
Al Content ◽  
Β Phase ◽  
Thermo Calc Software ◽  
Vertical Sections ◽  
Aluminum Equivalent

Ti-Al-Nb ternary phase diagrams were calculated by Thermo-Calc software. The analysis of the calculated vertical sections of Ti-Al-Nb phase diagram indicated that when Nb content is fixed at 5at.% and Al content is lower than 52.3at.%, the primary phase would be β phase during solidification. With 10 at.%Nb and Al content lower than 55.8at.%, or with 15 at.%Nb and Al content lower than 56.9at.%, the primary phase would be β phase. The vertical sections of Ti-Al-Nb ternary phase diagram were further simplified into pseudo-Ti-Al binary phase diagram. According to the pseudo-Ti-Al diagram, the expression of the aluminum equivalent was obtained in Ti-Al-5Nb ternary alloys.

scholarly journals Thermodynamic Analysis and Calculations of (Fe-Co) Alloy by Modeling and Simulation using Thermo-Calc Software

2018 ◽  
pp. 120-123
Author(s):  
Syed Mahmood Shah ◽  
Nasib Ullah ◽  
Bakhtar Ullah ◽  
Muhammad Shehzad Khan ◽  
Tariq Usman
Keyword(s):  
Phase Diagram ◽  
Free Energy ◽  
Gibbs Free Energy ◽  
Calphad Method ◽  
Negative Deviation ◽  
Activity Curve ◽  
Thermo Calc Software ◽  
Different Temperatures ◽  
The Stability ◽  
Co Alloys

In this paper Thermodynamic calculation is shown. We have found simulation for phase diagram, Gibbs free energy and Activity curve at different temperatures (1200 K, 1225 K and 1250 K). Phase diagrams, Gibbs free-energy and the component activities of (Fe-Co) alloys system were calculated by Calphad method. Results show that the values of Gibbs energy were negative, which shows the stability of (Fe-Co). Negative deviation had occurred from Raoult’s Law in activities, which indicates that there is strong interaction between Fe and Co in (Fe-Co) alloy. By increasing the temperature the activity increases and deviation in activity decreases. For all the thermodynamic calculations the Thermo-Calc software, databases and Calphad method have used.

Crack Healing Behavior of 12%Cr Ultra-Super-Critical Rotor Steel

2010 ◽  
Vol 152-153 ◽  
pp. 248-253 ◽  
Author(s):  
Yan Li ◽  
Jing Tao Han ◽  
Yong Jun Zhang
Keyword(s):  
Phase Diagram ◽  
Grain Growth ◽  
Equilibrium Phase ◽  
Equilibrium Phase Diagram ◽  
Positive Influence ◽  
Rotor Steel ◽  
Crack Healing ◽  
Compression Method ◽  
Thermo Calc Software ◽  
Different Temperatures

A drilling and compression method was designed to produce samples with artifical inner crack. According to the morphology, two types of crack were defined. After heating and holding at different temperatures, the crack healing results were observed under SEM. The starting temperature of crack healing is between 900°C and 950°C. Pseudo-equilibrium phase diagram of 12%Cr was calculated by the Thermo-Calc software to investigate the influence of transformation on the crack healing. It is found that the diffusive transformation has a positive influence on the crack healing behavior. Through experimental results and analysis, we conclude that crack healing is a physical process in association with diffusion, nucleation and grain growth. Any factor which can accelerate diffusion, nucleation and grain growth rate is favorable for the crack healing.

Thermodynamic Evaluation and Assessment of the Ti-U Binary System

2012 ◽  
Vol 187 ◽  
pp. 272-277 ◽  
Author(s):  
Zhan Min Cao ◽  
Kun Peng Wang ◽  
Guang Wei Du ◽  
Zhi Yu Qiao
Keyword(s):  
Phase Diagram ◽  
Binary System ◽  
Thermodynamic Description ◽  
Phase Diagram Data ◽  
Thermodynamic Evaluation ◽  
Miedema Model ◽  
Experimental Phase ◽  
Experimental Phase Diagram ◽  
Thermo Calc Software ◽  
Good Agreement

The thermodynamic description of the Ti-U binary system is obtained by the CALPHAD method using Thermo-Calc software and based on the estimated thermodynamic properties using ion-bonding model and Miedema model as well as the experimental phase diagram information. The liquid, αU, βU, δTi, and γ phases are assumed to be substitutional solutions with Redlich-Kister formula for the expressions of their excess Gibbs energy. The intermetallic compound TiU2 is treated as a stoichiometric compound. The calculated phase equlibria are in good agreement with the estimated and available experimental phase diagram data.

scholarly journals Thermodynamic Analysis and Calculations of (Fe-Co) Alloy by Modeling and Simulation using Thermo-Calc Software

2018 ◽  
pp. 35-38
Author(s):  
Syed Mahmood Shah ◽  
Nasib Ullah ◽  
Bakhtar Ullah ◽  
Muhammad Shehzad Khan ◽  
Tariq Usman
Keyword(s):  
Phase Diagram ◽  
Free Energy ◽  
Gibbs Free Energy ◽  
Calphad Method ◽  
Negative Deviation ◽  
Activity Curve ◽  
Thermo Calc Software ◽  
Different Temperatures ◽  
The Stability ◽  
Co Alloys

In this paper Thermodynamic calculation is shown. We have found simulation for phase diagram, Gibbs free energy and Activity curve at different temperatures (1200 K, 1225 K and 1250 K). Phase diagrams, Gibbs free-energy and the component activities of (Fe-Co) alloys system were calculated by Calphad method. Results show that the values of Gibbs energy were negative, which shows the stability of (Fe-Co). Negative deviation had occurred from Raoult’s Law in activities, which indicates that there is strong interaction between Fe and Co in (Fe-Co) alloy. By increasing the temperature the activity increases and deviation in activity decreases. For all the thermodynamic calculations the Thermo-Calc software, databases and Calphad method have used.

Phase diagram and electrical properties, defect concentration in oxides and sulphides of 3d metals

1996 ◽  
Vol 91 (3-4) ◽  
pp. 315-322 ◽  
Author(s):  
A Stokłosa
Keyword(s):  
Phase Diagram ◽  
Electrical Properties ◽  
Defect Concentration ◽  
3D Metals

New developments in the ab initio determination of transition metal alloys phase diagram

1993 ◽  
Vol 90 ◽  
pp. 249-254 ◽  
Author(s):  
C Wolverton ◽  
M Asta ◽  
S Ouannasser ◽  
H Dreyssé ◽  
D de Fontaine
Keyword(s):  
Phase Diagram ◽  
Transition Metal ◽  
Ab Initio ◽  
Metal Alloys ◽  
New Developments ◽  
Transition Metal Alloys

Directed walks with complex random weights: phase diagram and replica symmetry breaking

1992 ◽  
Vol 2 (8) ◽  
pp. 1607-1619 ◽  
Author(s):  
Yadin Y. Goldschmidt ◽  
Thomas Blum
Keyword(s):  
Phase Diagram ◽  
Symmetry Breaking ◽  
Replica Symmetry ◽  
Replica Symmetry Breaking ◽  
Random Weights ◽  
Directed Walks

Phase diagram calculation of Ti-Zr-X systems

1993 ◽  
Vol 90 ◽  
pp. 175-180 ◽  
Author(s):  
Li Lin ◽  
L Delaey ◽  
P Wollants ◽  
O Van Der Biest
Keyword(s):  
Phase Diagram ◽  
Phase Diagram Calculation
Sign in / Sign up

Export Citation Format

Share Document