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Influences of Contents and Reaction of Carbon and Oxygen on Microstructure and Mechanical Properties of Sintered 93W-4.6Ni-1.9Fe-0.5Co Alloys
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Influences of Contents and Reaction of Carbon and Oxygen on Microstructure and Mechanical Properties of Sintered 93W-4.6Ni-1.9Fe-0.5Co Alloys
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    摘要:

    采用具有不同碳氧含量的初始粉末，利用真空液相燒結(jié)制備93W-4.6Ni-1.9Fe-0.5Co合金試樣，研究碳氧含量的變化及其平衡反應(yīng)對(duì)合金力學(xué)性能與組織的影響。結(jié)果表明，壓坯在真空高溫?zé)Y(jié)過程中，原料自身含有的碳具有較強(qiáng)的脫氧能力，通過碳氧反應(yīng)可減少合金中的氧、碳含量，阻止氧化物、碳化物夾雜的生成，在鎢顆粒與粘接相之間形成牢固的界面。當(dāng)合金總氧含量低于500 mg/g 時(shí)，合金的力學(xué)性能顯著提高

    Abstract:

    Several 93W-4.6Ni-1.9Fe-0.5Co alloys have been prepared by liquid phase sintering in vacuum atmosphere using powders with different contents of carbon and oxygen. The microstructures and mechanical properties of sintered samples have been investigated. Results show that the carbon in the starting powders has a stronger deoxidization ability in the high temperature vacuum sintering process due to the carbon-oxygen reaction, which decreases the contents of carbon and oxygen in the sintered samples and prevents the formation of carbide and oxide inclusions, resulting in a strong interfacial boundary between tungsten and bonding phase. The mechanical properties are improved significantly when the oxygen content is controlled to be lower than 500 mg/g

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李 強(qiáng),楊曉峰,樂國(guó)敏,范 輝. Influences of Contents and Reaction of Carbon and Oxygen on Microstructure and Mechanical Properties of Sintered 93W-4.6Ni-1.9Fe-0.5Co Alloys[J].稀有金屬材料與工程,2015,44(2):293~297.[Li Qiang, Yang Xiaofeng, Le Guomin, Fan Hui. Influences of Contents and Reaction of Carbon and Oxygen on Microstructure and Mechanical Properties of Sintered 93W-4.6Ni-1.9Fe-0.5Co Alloys[J]. Rare Metal Materials and Engineering,2015,44(2):293~297.]
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  • 收稿日期:2014-05-25
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  • 在線發(fā)布日期: 2015-05-29
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