Comprehensive model of thermal phenomena and phase transformations in laser welding process

被引：29

作者：

Kubiak, M. ^{[1
]}

Piekarska, W. ^{[1
]}

机构：

[1] Czestochowa Tech Univ, Inst Mech & Machine Design Fdn, Dabrowskiego 73, PL-42201 Czestochowa, Poland

来源：

COMPUTERS & STRUCTURES | 2016年 / 172卷

关键词：

Laser welding; Heat transfer; Fluid flow; Phase transformations; Structure composition; Numerical modelling; STEEL; HEAT; TEMPERATURE; KEYHOLE; MICROSTRUCTURE; ALLOY; POOL;

D O I：

10.1016/j.compstruc.2016.05.014

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

This paper concerns computational modelling of thermal phenomena and phase transformations in solid state in laser welding process. The analysis is performed on the basis of numerical solution into continuum mechanics governing equations as well as classic Johnson-Mehl-Avrami (JMA) and Koistinen-Marburger (KM) kinetics models with continuous heating transformation (CHT) and continuous cooling transformation (CCT) diagrams of 5460 steel. The influence of latent heats on temperature distributions is analysed. Obtained results include temperature field, melted material velocity field in the fusion zone and structure composition of welded joint. Calculations are partially verified by experimental data. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：29 / 39

页数：11

共 32 条

[1] Numerical and experimental study of molten pool formation during continuous laser welding of AZ91 magnesium alloy [J].