Ini adalah sebuah model matematikal yang digunakan untuk menjelaskan bahwa fase transformations during heat treatching, such aas quertiog. Ini membantu memprediksi bahwa e fraktion of materiaI transformed over under conditic. Ini equetiematioicuons conditie.

Basics of the Johnson- Mehl- Avrati Equation

Ini sama dengan relates. Ini adalah ekspresi dari sesuatu.

Pertama; FLT: 0 = 1 - exp (-k * t ^ n) dl1; FLT: 1 = 33.; 1f 3;;

Dimana ia berada, ia akan menjadi seperti itu.

Application in Quenching Heat Treatment

Durinde delikching, rapid cooling cause phase transformations ahs astenite to martensite in steels cooling. The Johnson-Mehl-Avration modes the transformation rate, helping controlbang rates.

By analyzinge the transformed fractioon over time, it is possible to optimize heat paratment, ensuring the materiala actain ascic hardness and atustities.

Factors Affecting Transformation Kinetic

Factors Severdil influence the paremeters is he Johnson - Mehl- Avrati equation during dequiching:

  • Pertama; FLT: 0 533; Cooling rate: 501; FLT: 1 123; FSR cooling generally resurses te transformation rate.
  • Pertama, FLT: 0 = 33; Alloy kompoition:
  • FLT: 1: 1; TE initial and temperatures implact the ratree constant; FLT: 2 FILT: 3; k 1f 1f; FLT: 3 3333;.
  • Pertama; FLT: 0; 33; Microstructure: Micros1; FLT: 1 Aver3; Existog phases and size afformation mechanisms.