93W-5Ni-2Fe高密度钨合金冲击韧性关键影响因素研究

材料导报

2020, Vol. 34

Issue (Z1): 304-306

金属与金属基复合材料

93W-5Ni-2Fe高密度钨合金冲击韧性关键影响因素研究

甘杰, 何林, 李强, 杨晓峰, 范辉

中国工程物理研究院材料研究所,绵阳 621907

The Research of Key Factors for Impact Toughness of 93W-5Ni-2Fe Alloys

GAN Jie, HE Lin, LI Qiang, YANG Xiaofeng, FAN Hui

Institute of Materials, China Academy of Engineering Physics, Mianyang 621907, China

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摘要采用真空烧结技术制备了93W-5Ni-2Fe合金,研究了杂质元素、内部缺陷及表面加工应力对钨合金冲击韧性的影响。结果表明:杂质元素氧与钨、铁、镍等发生氧化反应,生成氧化钨和其他氧化物夹杂,破坏母体的连续性,导致钨合金性能的恶化;随着氧杂质元素含量的降低,钨合金冲击韧性得到大幅改善;过高的升温速率,容易在烧结坯内部产生大量的气孔等内部缺陷,严重影响其冲击韧性,采用较低的升温速度(3 ℃/min),有利于减少试样中气孔等内部缺陷的产生,改善试样的冲击韧性;真空热处理能够很好地消除试样表面的加工应力,提高材料的冲击韧性。

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关键词: 钨合金冲击韧性氧含量内部缺陷真空热处理表面应力

Abstract: 93W-5Ni-2Fe alloys were prepared by vacuum sintering. The effects of impurities, defects and surface stress on impact toughness were stu-died. The results showed impurities of tungsten oxide and other oxides resulting from reactions between oxygen and tungsten, iron, nickel and etc deteriorated the properties of tungsten alloys significantly. With a decreasing content of oxygen, the impact toughness of tungsten alloys could be improved considerably. By using a heating rate of 3 ℃/min, few pores and defects were formed in alloys, which showed a good impact toughness. Whereas, by using exorbitant heating rate, a large amount of pores and defects were formed. Vacuum annealing could eliminate the surface stress of tungsten alloys effectively, resulting in an improve impact toughness.

Key words: tungsten alloy impact toughness oxygen defect vacuum annealing surface stress

发布日期: 2020-07-01

ZTFLH:

TG146.4

作者简介: 甘杰,中国工程物理研究院材料研究所职工,2006年毕业于湖南冶金学院金属材料专业,2013年取得中国石油大学材料物理专业本科学历,从2006年工作至今,一直从事金属材料粉末冶金制品的生产、研究等方面的工作。

引用本文:

甘杰, 何林, 李强, 杨晓峰, 范辉. 93W-5Ni-2Fe高密度钨合金冲击韧性关键影响因素研究[J]. 材料导报, 2020, 34(Z1): 304-306.
GAN Jie, HE Lin, LI Qiang, YANG Xiaofeng, FAN Hui. The Research of Key Factors for Impact Toughness of 93W-5Ni-2Fe Alloys. Materials Reports, 2020, 34(Z1): 304-306.

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http://www.mater-rep.com/CN/ 或 http://www.mater-rep.com/CN/Y2020/V34/IZ1/304

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