期刊
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
卷 231, 期 -, 页码 468-478出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jmatprotec.2016.01.017
关键词
Real-time cooling rate; Microstructure; Laser Additive Manufacturing; Infrared thermal imaging
资金
- Natural Sciences and Engineering Research Council of Canada
An infrared thermal imaging system is developed to compare the effects of cooling rate and melt pool temperature on the microstructure of 316L stainless steel produced by Laser Additive Manufacturing (LAM) with injected powder melting. The system captures the real-time cooling rate to provide online monitoring and control of the microstructure at the onset of solidification. Further study is conducted to evaluate cooling rate effects on grain size, phase transformations and hardness. Cooling rate changes are also studied with respect to the traveling speed, in order to identify a suitable controlling action for a microstructural controller. The study provides a strong experimental justification of the current theories in solidification and microstructural evolution during the LAM with injected powder melting process. (C) 2016 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据