摘要
介绍了利用ANSYS Fluent软件建立多场耦合数值模型对电子束冷床熔炼过程进行解构剖析的实际方法,研究了电子束熔铸钛合金(直径为∅260 mm,初始Al含量为7%)过程中的元素偏析演变情况。结果表明,提高拉速可以显著地缓解铸锭在横截面上的元素偏析。在浇注温度为2273 K,拉铸速度为25 mm/min时,横截面上Al偏析在1%左右,经过去皮工艺,完全符合铸锭的品质要求。
A multi-field model built for descripting the electoral beam cold hearth melting(EBCHM)process by ANSYS Fluent was introduced,and the element segregation during the EBCHM of titanium alloy ingot with a diameter of 260 mm and an initial Al constant of 7%was investigated.The results indicate that the increase of the casting speed can significantly alleviate the element segregation on the cross section of ingot.The segregation of Al element on the cross section is about 1%under the conditions of the casting temperature of 2273 K and the casting speed of 25 mm/min,fully meeting the quality requirements of the ingot after the peeling process.
作者
高磊
卢佳佳
张思瑞
陈菓
Gao Lei;Lu Jiajia;Zhang Sirui;Chen Guo(Key Laboratory of Green-Chemistry Materials in University of Yunnan Province,Yunnan Minzu University;Joint Research Centre for International Cross-border Ethnic Regions Biomass Clean Utilization in Yunnan,Yunnan Minzu University;Key Laboratory of Unconventional Metallurgy,Ministry of Education,Kunming University of Science and Technology)
出处
《特种铸造及有色合金》
CAS
北大核心
2022年第9期1110-1114,共5页
Special Casting & Nonferrous Alloys
基金
国家自然科学基金青年基金资助项目(52104351)
云南省基础研究资助项目(202101AU00088)
中国博士后基金面上基金资助项目(2018M633421)
云南省教育厅科学研究基金资助项目(2021J0652)
关键词
大规格钛合金铸锭
电子束冷床熔炼
多场耦合
模型
Large-scale Titanium Alloy Ingot
Electron Beam Cold Hearth Melting
Multi-field Coupling
Model
