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tutorials:trx [2017/10/25 10:55]
pwarczok
tutorials:trx [2017/10/25 16:42] (current)
pwarczok
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-===== T28: Strain induced precipitates =====+===== T28: Recrystallization on subgrain walls =====
  
 //This tutorial was tested on\\ //This tutorial was tested on\\
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 ==== Complimentary files ==== ==== Complimentary files ====
  
-Click {{:tutorials:t21:script:t21.mcs|here}} to view the script for this tutorial+Click {{:tutorials:t22:script:t22_new.mcs|here}} to view the script for this tutorial
  
 ==== Contents: ==== ==== Contents: ====
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 In the current recrystallization model, the newly recrystallized grains form from subgrain created during the recovery process following the material deformation. First, the subgrain formation and size evolution will be investigated. The subgrains are generated by the ordering of the excess dislocations introduced during the deformation preocess. Hence, the next thing to do will be to activate the substructure evolution model. Switch to the **'MS Evolution'** tab, select **'Substructure'** tab inside and choose **'1-param - Sherstnev-Lang-Kozeschnik - 'ABC' '** as the model for the substructure evolution.  In the current recrystallization model, the newly recrystallized grains form from subgrain created during the recovery process following the material deformation. First, the subgrain formation and size evolution will be investigated. The subgrains are generated by the ordering of the excess dislocations introduced during the deformation preocess. Hence, the next thing to do will be to activate the substructure evolution model. Switch to the **'MS Evolution'** tab, select **'Substructure'** tab inside and choose **'1-param - Sherstnev-Lang-Kozeschnik - 'ABC' '** as the model for the substructure evolution. 
 +
 +In this tutorial, the default model parameters will be used for the demonstration so click on **'OK'** to close this window.
  
 ==== Thermo-mechanical treatment ==== ==== Thermo-mechanical treatment ====
  
-The last step before the initial kinetics simulation is the definition of the thermo-mehanical treatment. In **'Global'** -> **'Thermo-mech. treatments ...'** create a new treatment with the name **'cooling'**. Next, create a segment in which the austenite domain will be cooled from **1300°C** to **750°C** with **1°C/s** cooling rate +Now, define the thermo-mehanical treatment which will consist of the deformation segment and the subsequent annealing segment. For the sake of simplicity, the whole simulation will be performed at the constant temperature of 1000°C. In **'Global'** -> **'Thermo-mech. treatments ...'** create a new treatment with the name **'tmt'**. Next, create a segment in which the austenite domain will be deformed to the accumulated strain value of **'0,1'**. In **'MS Evolution'** tab, set the **'eps-dot'** (strain rate) value to **'1'**. Back in **'General'** tab, the **'Start temperature'** is to be set to **'1000°C'**.
  
 {{:tutorials:t21:img:t21_cooling_segment.png?650| MatCalc plot}} {{:tutorials:t21:img:t21_cooling_segment.png?650| MatCalc plot}}
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 {{:tutorials:t21:img:t21_cooling_treatment_2017.png?650| MatCalc plot}} {{:tutorials:t21:img:t21_cooling_treatment_2017.png?650| MatCalc plot}}
  
-=====  Kinetics simulation of simple cooling process =====+In the next segment, the material will be held isothermally at 1000°C. Select "Heat/Cooling Rate & Delta-Time" in "Ramp control" field and set the rate to **'0'** and the segment time to **'10000'** seconds.  
 + 
 +Close the editor windows by clicking **'OK'**. 
 + 
 +=====  Kinetics simulation of the deformation process =====
  
 With all the setup procedures done, perform the kinetics simulation. Click on **'Calc' -> 'Precipitation kinetics'**. Select the **'cooling'** treatment in the **'Temperature control ...'** area and click on **'Go'**. With all the setup procedures done, perform the kinetics simulation. Click on **'Calc' -> 'Precipitation kinetics'**. Select the **'cooling'** treatment in the **'Temperature control ...'** area and click on **'Go'**.
tutorials/trx.txt · Last modified: 2017/10/25 16:42 by pwarczok