电子束冷床熔炼过程中扫描策略对钛合金铝蒸发影响的数值模拟

Numerical Simulation of the Effects of Scanning Strategies on the Aluminum Evaporation of Titanium Alloy in the Electron Beam Cold Hearth Melting Process.

作者信息

Truong Van-Doi, Hyun Yong-Taek, Won Jong Woo, Lee Wonjoo, Yoon Jonghun

机构信息

Department of Mechanical Design Engineering, Hanyang University, 222 Wangsimni-ro, Seongdonggu, Seoul 04763, Korea.

BK21 FOUR ERICA-ACE Center, Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan-si 15588, Gyeonggi-do, Korea.

出版信息

Materials (Basel). 2022 Jan 21;15(3):820. doi: 10.3390/ma15030820.

DOI:10.3390/ma15030820

PMID:35160766

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8836968/

Abstract

In the production of titanium alloy, the electron beam cold hearth melting (EBCHM) process is commonly used due to its effectiveness and the high quality of the end product. However, its main drawback is the significant loss of elements such as aluminum (Al) due to evaporation under the vacuum environment. Numerical coupled thermal-flow models were here developed to investigate the effects of scanning strategies on Al loss in a titanium alloy during EBCHM. The validation model was successful in comparison with previously published experimental data. The Al mass fraction results at the outlet of the water-cooled hearth were strongly influenced by changes in the applied scanning strategies. The results indicated that the Al mass fraction loss could be reduced by using the full-hearth scanning strategies.

摘要

在钛合金生产中，电子束冷床熔炼（EBCHM）工艺因其有效性和最终产品的高质量而被广泛使用。然而，其主要缺点是在真空环境下，铝（Al）等元素会因蒸发而大量损失。本文开发了数值耦合热流模型，以研究扫描策略对钛合金在电子束冷床熔炼过程中铝损失的影响。与先前发表的实验数据相比，验证模型是成功的。水冷炉床出口处的铝质量分数结果受到所应用扫描策略变化的强烈影响。结果表明，采用全炉床扫描策略可以减少铝质量分数的损失。