Physically based modelling of phase transformations during welding of low-carbon steel
Physically based modelling of phase transformations during welding of low-carbon steel
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DOI：
10.1016/j.msea.2006.04.076
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发表时间：
2006-07
期刊：
影响因子：
6.4
通讯作者：
R. Thiessen;I. Richardson;J. Sietsma
中科院分区：
文献类型：
--
作者：
R. Thiessen;I. Richardson;J. Sietsma
利用基于物理的界面迁移率推导和多相相场方法模拟了AISI1005焊接钢热影响区（HAZ）的奥氏体化和向铁素体的还原。研究了奥氏体在加热时的形核和铁素体在冷却时的形核。珠光体被建模为伪均匀相，从而大大降低了计算成本。将计算出的相位分数与文献中实时同步加速器测量结果进行比较，在时间和空间方面都有很好的一致性。
Austenitisation and reversion to ferrite in the heat affected zone (HAZ) of AISI1005 welded steel have been simulated using physically based derivations for interface mobility and the driving force for transformation in a multiphase phase-field methodology. The nucleation and growth of both austenite upon heating and ferrite upon cooling are presented. Pearlite is modelled as a pseudo-homogeneous phase to drastically reduce computational costs. Comparison of calculated phase fractions with in situ real-time synchrotron measurements in the literature yields a good agreement, both in temporal and spatial aspects.