Introducing Carbon Nanoparticles in Titanium During Chamber Electroslag Remelting (Chesr)

Introducing Carbon Nanoparticles in Titanium During Chamber Electroslag Remelting (Chesr)
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在室式电渣重熔过程中在钛中引入碳纳米颗粒 (Chesr)

DOI:
10.1007/978-3-319-48102-9_20
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发表时间:
2013
期刊:
影响因子:
--
通讯作者:
Olga Snizhko
Olga Snizhko
中科院分区:
--
文献类型:
--
作者:
Sebastian Radwitz;Peter Spiess;Bernd Friedrich;Anatoliy Ryabtsev;Fedor Leokha;Sergey Ratiev;Olga Snizhko

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在ChESR过程中在钛中引入碳纳米颗粒的可能性目前正在DonNTU进行研究。利用钛碳二元相图对晶化过程中的相和结构形成进行了理论分析。在研究中,通过压制不同类型的纳米颗粒和钛海绵制备了具有预先引入的分散碳颗粒的自耗电极。随后的重熔在724 kW的ChESR炉中在保护气体气氛下进行。重熔后的平均碳含量为0.03 - 0.34重量%。增加的碳含量同时导致硬度从140 HB增加到220 HB。对金属中沉淀物的金相研究表明,相主要由非化学计量组成的碳化钛颗粒组成。因此,可以说,结构和硬度表明ChESR提供了钛锭良好的化学和结构均匀性。
The possibility of introducing carbon nanoparticles in titanium during ChESR is currently under investigation at DonNTU. Theoretical evaluation of phase and structure formation during crystallization was fulfilled by using the binary phase diagram of titanium and carbon. Within the investigations, consumable electrodes with previously introduced dispersed carbon particles were prepared by pressing of titanium sponge and nanoparticles of different types. The subsequent remelting was performed under a protective gas atmosphere in a 724 kW ChESR furnace. The average carbon content after remelting was in the range of 0.03 – 0.34 wt.-%. An increased carbon content simultaneously resulted in an increase of hardness from 140 to 220 HB. Metallographic investigations of precipitations in metal have shown phases mainly consisting of titanium-carbide particles with nonstoichiometric composition. As a result it could be stated, that structure as well as hardness show that ChESR provides good chemical and structural homogeneity of titanium ingots.
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