Ti64合金的电子束冷床熔炼研究

稀有金属材料与工程, 2008, 37(11): 1973-1977.

Ti64合金的电子束冷床熔炼研究

张英明 ^1, , 周廉 ^2, , 孙军 ^3, , 韩明臣 ^4, , ^5, , ^6, , 杨建朝 ^7, , 赵永庆 ^8,

1.西安交通大学,陕西,西安,710049;西北有色金属研究院,陕西,西安,710016

2.西北有色金属研究院,陕西,西安,710016

3.西安交通大学,陕西,西安,710049

4.西北有色金属研究院,陕西,西安,710016

5.ALD真空技术股份公司,德国,Hanau,D63450

6.ALD真空技术股份公司,德国,Hanau,D63450

7.西北有色金属研究院,陕西,西安,710016

8.西北有色金属研究院,陕西,西安,710016

基金项目: 国家重点基础研究发展计划(973计划)(2007CB613802)

关键词：钛 , 电子束冷床熔炼 , 铝挥发 , TiN夹杂 , 真空熔炼

An Investigation on Electron Beam Cold Hearth Melting of Ti64 Alloy

Zhang Yingming ^1, , Zhou Lian ^2, , Sun Jun ^3, , Han Mingchen ^4, , Georg Reiter ^5, , Jochen Flinspach ^6, , Yang Jianchao ^7, , Zhao Yongqing ^8,

1.西安交通大学,陕西,西安,710049;西北有色金属研究院,陕西,西安,710016

2.西北有色金属研究院,陕西,西安,710016

3.西安交通大学,陕西,西安,710049

4.西北有色金属研究院,陕西,西安,710016

5.ALD真空技术股份公司,德国,Hanau,D63450

6.ALD真空技术股份公司,德国,Hanau,D63450

7.西北有色金属研究院,陕西,西安,710016

8.西北有色金属研究院,陕西,西安,710016

Keywords： titanium , electron beam cold hearth remelting , Al volatilization , TiN inclusion , vacuum melting

电子束冷床熔炼工艺作为一种新熔炼技术,可应用于生产航空发动机转动件用优质钛合金和回收残钛.利用500 kW电子束冷床熔炼设备,研究了熔炼速度与Ti64合金铸锭化学成分和TiN夹杂溶解速度的关系.熔炼速度分别为70,100,140 kg/h时,Al挥发损失分别为22%、16%、12%.经超声探伤,在熔炼电极中加入的TiN夹杂能够全部消除.所熔炼的铸锭外部是均匀的柱状晶粒,心部是细小的晶粒.

The electron beam cold hearth remelting process has emerged as an new melting technology. It is used to produce premium quality titanium alloys for critical rotating parts of the aero-engine and to recycle the titanium scraps successfully. In the paper, the relationships between the melting rate and the chemical composition of Ti64 alloy the TiN dissolution ability were studied. The results show that at melting rate of 70, 100 and 140 kg/h, the Al volatilization losses of the EBCHR melted ingots are 22%, 16% and 12% respectively. The artificially added TiN inclusions in the feeding bar are completely removed by the electron beam cold hearth remelting process. The as-melted ingot has homogeneous columnar grains in the outer region and fine equi-axed grains in the center region.

参考文献

[1]	Jack L Henry;Hill S D;Schaller J L .[J].Metallurgical and Materials Transactions,1973,4:1859.
[2]	Bellot J P;Michell A.[J].Light Metals,1994(zk):1187.
[3]	Bellot J P;Foster B;Hans S .[J].Metallurgical and Materials Transactions B:Process Metallurgy and Materials Processing Science,1997,8B:001.
[4]	Powell A;Van Avyle J;Damkroger B .[J].Metallurgical and Materials Transactions B:Process Metallurgy and Materials Processing Science,1997,28B:1227.
[5]	Bewlay P;Gigiotti M F X .[J].Acta Materialia,1997,45(01):357.
[6]	Clifford E Shamblen;Gordon B Hunter.[A].Pittsburg:VMMSM,1989:3.
[7]	Semiatin S L;Ivanchenko V G;Akhonin S V .[J].Metallurgical and Materials Transactions B:Process Metallurgy and Materials Processing Science,2004,35B:235.
[8]	Ivanchenko V G;Ivasishin O M;Semiatin S L .[J].Metallurgical and Materials Transactions B:Process Metallurgy and Materials Processing Science,2003,34B:911.
[9]	Akhonin S V;Trigub N P;Zamkov V N et al.[J].Metallurgical and Materials Transactions B:Process Metallurgy and Materials Processing Science,2003,34B:447.

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