Finite element analysis of the rapid manufacturing of Ti-6Al-4V parts by laser powder deposition
Finite element analysis of the rapid manufacturing of Ti-6Al-4V parts by laser powder deposition
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DOI：
10.1016/j.scriptamat.2010.03.036
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发表时间：
2010-07-01
影响因子：
6
通讯作者：
Vilar, Rui
中科院分区：
文献类型：
--
作者：
Crespo, Antonio;Vilar, Rui
在激光粉末沉积（LPD）快速制造过程中，由于层间的重叠，导致先前沉积的材料发生连续的热循环，从而导致复杂的相变，难以预测材料的组织和性能分布。本文提出了一种耦合有限元传热计算、相变动力学和Ti-6Al-4V合金微观组织性能关系的模型，并用于获得与沉积参数和零件微观组织性能相关的工艺图。(C)2010 Acta Materialia Inc.由爱思唯尔有限公司出版。保留所有权利。
The overlapping of layers during part build-up in rapid manufacturing by laser powder deposition (LPD) causes consecutive thermal cycles in the previously deposited material that often lead to complex phase transformations and difficult to predict distributions of microstructure and properties. In this paper a model coupling finite element heat transfer calculations, phase transformation kinetics and microstructure property relations in Ti-6Al-4V is presented and used to obtain processing maps relating the deposition parameters to the microstructure and properties of the parts. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.