Ti3Ni合金中TiO2和TiN夹杂物的去除
Removal of TiO2 and TiN Inclusions in Ti3Ni Alloy
摘 要
采用电子束精炼技术精炼Ti3Ni合金，研究了合金中TiO2和TiN夹杂物的去除机制。结果表明：在精炼条件下熔体中心处的温度最高，为2 681.2 K，远高于TiO2的熔点，熔体表面及近表面区的TiO2夹杂物主要以溶解的方式去除；在精炼条件下TiN夹杂物溶解的最低温度为2 671.5 K，略低于熔体中心的温度，分解的最低温度为1 869.6 K，远低于熔体中心的温度，熔体表面及近表面区的TiN夹杂物可通过溶解和分解的方式去除。
TiO2
TiN
电子束精炼
Ti3Ni alloy
TiO2
TiN
electron beam refining
Abstract
The electron beam refining technique was used to refine Ti3Ni alloy. The removal mechanism of TiO2 and TiN inclusions in Ti3Ni alloy was studied. The results show that under the refining conditions, the temperature at the melt center was the highest, was 2 681.2 K, which was much higher than the melting point of TiO2. The TiO2 inclusions on the melt surface and near the surface were mainly removed by disslution. Under the refining conditions, the lowest disslution temperature of TiN inclusions was 2 671.5 K, which was slightly lower than the temperature at the melt center, and the lowest decomposition temperature of TiN was 1 869.6 K, which was far lower than the temperature at the melt center. The TiN inclusions on the melt surface and near the surface could be removed by disslution and decomposition.
中图分类号 TG11 DOI 10.11973/jxgccl202108005
所属栏目 试验研究
基金项目 国家重点研发计划项目（2019YFA0705300）；国家自然科学基金资助项目（91860123，52004051）；大连市重点领域创新团队支持计划项目（2019RT13）；中国博士后科学基金面上项目（ZX20190056）
收稿日期 2020/5/8
修改稿日期 2021/2/5
网络出版日期
作者单位点击查看
备注郑俊(1991-),男,山西大同人,硕士研究生
引用该论文: ZHENG Jun,YOU Xiaogang,TAN Yi,ZHAO Longhai,LIAO Jiao. Removal of TiO2 and TiN Inclusions in Ti3Ni Alloy[J]. Materials for mechancial engineering, 2021, 45(8): 25～31
郑俊,游小刚,谭毅,赵龙海,廖娇. Ti3Ni合金中TiO2和TiN夹杂物的去除[J]. 机械工程材料, 2021, 45(8): 25～31
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【4】YANG H Q,BAO R,ZHANG J Y,et al.Creep-fatigue crack growth behaviour of a nickel-based powder metallurgy superalloy under high temperature[J].Engineering Failure Analysis,2011,18(3):1058-1066.
【5】TU W J,POLLOCK T M.Deformation and strain storage mechanisms during high-temperature compression of a powder metallurgy nickel-base superalloy[J].Metallurgical and Materials Transactions A,2010,41(8):2002-2009.
【6】袁超,郭建亭,李谷松,等.铸造高温合金中氮的影响机理与控制[J].中国有色金属学报,2011,21(4):733-746. YUAN C,GUO J T,LI G S,et al.Effect mechanism and control of nitrogen in cast superalloys[J].The Chinese Journal of Nonferrous Metals,2011,21(4):733-746.
【7】杜金辉,邓群,曲敬龙,等.我国航空发动机用GH4169合金现状与发展[C]//第八届(2011)中国钢铁年会论文集.北京:[s.n.], 2011:4340-4344. DU J H, DENG Q, QU J L, et al. Current status and development of alloy GH4169 used in aeroengines of China[C]//Proceedings of the 8th (2011) China Iron and Steel Annual Conference. Beijing:[s.n.], 2011:4340-4344.
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【11】CHOUDHURY A,HENGSBERGER E.Electron beam melting and refining of metals and alloys[J].ISIJ International,1992,32(5):673-681.
【12】GLEBOVSKY V G,SEMENOV V N.Electron-beam floating zone melting of refractory metals and alloys:Art and Science[J].International Journal of Refractory Metals and Hard Materials,1993,12(5):295-301.
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