Materials Reports  2020, Vol. 34 Issue (Z1): 304-306 |
| METALS AND METAL MATRIX COMPOSITES |
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| The Research of Key Factors for Impact Toughness of 93W-5Ni-2Fe Alloys |
| GAN Jie, HE Lin, LI Qiang, YANG Xiaofeng, FAN Hui
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| Institute of Materials, China Academy of Engineering Physics, Mianyang 621907, China |
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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.
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Published: 01 July 2020
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| About author:: Jie Gan, a staff member of the Institute of Material of China Academy of Engineering Physics, graduated from the metal material major of Hunan Metallurgy University in 2006, and obtained the bachelor degree of material physics major of China University of Petroleum in 2013. Since 2006, he has been engaged in the production and research of metal material powder metallurgy products. |
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