scholarly journals Effect of Rhenium addition on tungsten heavy alloys processed through spark plasma sintering

2021 ◽  
Author(s):  
B.S. Lakshmi Prasad ◽  
A. Raja Annamalai
Keyword(s):  
Spark Plasma Sintering ◽  
Plasma Sintering ◽  
Heavy Alloys ◽  
Tungsten Heavy Alloys ◽  
Spark Plasma ◽  
Rhenium Addition

Superhard nanodisperse tungsten heavy alloys obtained using the methods of mechanical activation and spark plasma sintering

2009 ◽  
Vol 35 (11) ◽  
pp. 1036-1039 ◽  
Author(s):  
V. N. Chuvil’deev ◽  
A. V. Moskvicheva ◽  
G. V. Baranov ◽  
A. V. Nokhrin ◽  
Yu. G. Lopatin ◽  
...  
Keyword(s):  
Mechanical Activation ◽  
Spark Plasma Sintering ◽  
Plasma Sintering ◽  
Heavy Alloys ◽  
Tungsten Heavy Alloys ◽  
Spark Plasma

93W–5.6Ni–1.4Fe heavy alloys with enhanced performance prepared by cyclic spark plasma sintering

2014 ◽  
Vol 599 ◽  
pp. 233-241 ◽  
Author(s):  
Xiaoqiang Li ◽  
Ke Hu ◽  
Shengguan Qu ◽  
Li Li ◽  
Chao Yang
Keyword(s):  
Spark Plasma Sintering ◽  
Plasma Sintering ◽  
Heavy Alloys ◽  
Spark Plasma

scholarly journals Powder Metallurgical Processing and Characterization of Molybdenum Addition to Tungsten Heavy Alloys by Spark Plasma Sintering

Materials ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 5756
Author(s):  
A. Raja Annamalai ◽  
A. Muthuchamy ◽  
Muthe Srikanth ◽  
Senthilnathan Natarajan ◽  
Shashank Acharya ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Microstructural Characterization ◽  
Tungsten Alloy ◽  
Plasma Sintering ◽  
Heavy Alloys ◽  
Molybdenum Addition ◽  
Spark Plasma ◽  
Iron Nickel ◽  
Heavy Tungsten Alloy ◽  
High Level

The effect of adding molybdenum to the heavy tungsten alloy of W-Ni-Fe on its material characteristics was examined in the current study. The elemental powders of tungsten, iron, nickel, and molybdenum, with a composition analogous to W-3Fe-7Ni-xMo (x = 0, 22.5, 45, 67.5 wt.%), were fabricated using the spark plasma sintering (SPS) technique at a sintering temperature of 1400 °C and under pressure of 50 MPa. The sintered samples were subjected to microstructural characterization and tested for mechanical strength. The smallest grain size of 9.99 microns was observed for the 45W-45Mo alloy. This alloy also gave the highest tensile and yield strengths of 1140 MPa and 763 MPa, respectively. The hardness increased with the increased addition of molybdenum. The high level of hardness was observed for 67.5Mo with a 10.8% increase in the base alloy’s hardness. The investigation resulted in the alloy of 45W-7Ni-3Fe-45Mo, observed to provide optimum mechanical properties among all the analyzed samples.

Fine-grained 93W–5.6Ni–1.4Fe heavy alloys with enhanced performance prepared by spark plasma sintering

2013 ◽  
Vol 573 ◽  
pp. 245-252 ◽  
Author(s):  
Yuanyuan Li ◽  
Ke Hu ◽  
Xiaoqiang Li ◽  
Xuan Ai ◽  
Shengguan Qu
Keyword(s):  
Spark Plasma Sintering ◽  
Fine Grained ◽  
Plasma Sintering ◽  
Heavy Alloys ◽  
Spark Plasma

Structure-property correlations of W-Ni-Fe-Mo heavy alloys consolidated using spark plasma sintering

2018 ◽  
Vol 6 (2) ◽  
pp. 026545 ◽  
Author(s):  
A Muthuchamy ◽  
DigVijay Yadev ◽  
Dinesh K Agrawal ◽  
Raja Annamalai
Keyword(s):  
Spark Plasma Sintering ◽  
Structure Property ◽  
Plasma Sintering ◽  
Heavy Alloys ◽  
Spark Plasma ◽  
Property Correlations

Fine-Grained W-Ni-Fe Heavy Alloys Prepared by Spark Plasma Sintering

2016 ◽  
Vol 849 ◽  
pp. 745-752 ◽  
Author(s):  
Yan Jiao Wu ◽  
Yun Kai Li ◽  
Dong Hui Yu
Keyword(s):  
Relative Density ◽  
Spark Plasma Sintering ◽  
Sintering Temperature ◽  
Dynamic Compression ◽  
Fine Grained ◽  
Plasma Sintering ◽  
Heavy Alloys ◽  
Close Relationship ◽  
Static Tensile ◽  
Spark Plasma

Fine-grained W-Ni-Fe heavy alloys (WHAs) with grain size of about 1-3μm were obtained by Spark Plasma Sintering (SPS) process. The composition of the alloy is consisted of 65 to 75 wt % W, with a Ni/Fe ratio ranging from zero to 7/3. In the lower sintering temperature range of 1100-1300°C, the WHAs showed the highest relative density of 98.6%, and when the sintering temperature was 1250 °C, the relative density of the WHAs prepared by the same techniques increased by decreasing of the content of W. Meanwhile the relative density of the alloy also increased with an increase of Ni /Fe ratio. The results show that the static tensile properties of the WHAs have a close relationship with the ratio of Ni / Fe. The tensile strength and the ductility of the sample W70-Ni21-Fe9 was 890 MPa and 3%. Furthermore, the dynamic compression strength of W70-Ni21-Fe9 was 1744 MPa.

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