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Investigation of Influence of Gas Atomization Parameters on the Granulometric Composition of Aluminum Alloy Vas1 Powder

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Metallurgist Aims and scope

This article is devoted to establishing regularities of the influence of gas atomization process parameters of aluminum alloy VAS1 melts on the grain size composition of the resulting powder. Seventeen iterations of atomization of melts of VAS1 alloy billets with a varied content of alloying elements, and with different operating parameters of the process are carried out. An assessment is made of the relationship between characteristics of the powder particle size distribution by weight fractions (percentage of the fraction 10–63 μm, median powder particle size, excess and asymmetry coefficients). Correlation analysis of the influence of atomization process parameters on the value of the median particle diameter, as well as the influence of controlled parameters on melt mass flow rate is conducted. The Kishidaka equation is tested to predict the median particle diameter in the process of VAS1 alloy gas atomization. Some of the powders obtained are subjected to screening in order to obtain fractions of 10–63, 30–80 and 63–100 microns to study their technological properties.

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Authors and Affiliations

  1. All-Russian Scientific Research Institute of Aviation Materials, Moscow, Russia

    N. D. Shchetinina, V. V. Antipov, K. A. Speransky & A. A. Pavlov

Authors
  1. N. D. Shchetinina
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  2. V. V. Antipov
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  3. K. A. Speransky
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  4. A. A. Pavlov
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Corresponding author

Correspondence to N. D. Shchetinina.

Additional information

Translated from Metallurg, Vol. 67, No. 6, pp. 43–52, June, 2023.

Appendix. Values of Median Particle Diameter and Process Calculated Parameters (Gas Velocity and Density in within Primary Crushing Zone, Heating Magnitude, Surface Tension Values, Dynamic Viscosity, Melt Surface Tension Values at Pouring Temperatures, and Also the Ratio of Gas and Melt Weight Consumption)

Appendix. Values of Median Particle Diameter and Process Calculated Parameters (Gas Velocity and Density in within Primary Crushing Zone, Heating Magnitude, Surface Tension Values, Dynamic Viscosity, Melt Surface Tension Values at Pouring Temperatures, and Also the Ratio of Gas and Melt Weight Consumption)

Iteration number

D50

ug, m/sec

ρg, kg/m3

ΔT, °C

ρm

μm,

σm

mg/mm

1

44

32

0.858

214

0.85

0.00102

2390

4.4

2

68

39

0.841

234

0.843

0.00099

2384

3

3

47

46

0.827

234

0.843

0.00099

2384

4.8

4

46

51

0.82

237

0.829

0.00093

2375

3.4

5

63

17

0.938

212

0.838

0.00098

2383

3.3

6

58

35

0.852

202

0.857

0.00107

2399

2.6

7

43

40

0.839

155

0.874

0.00118

2412

4.7

8

43

58

0.81

142

0.85

0.00103

2390

4.3

9

42

47

0.827

123

0.858

0.00107

2396

4.5

10

38

56

0.813

143

0.85

0.00103

2390

5.7

11

39

56

0.813

141

0.85

0.00103

2390

4.1

12

40

54

0.815

143

0.851

0.00103

2390

5.1

13

41

57

0.811

200

0.848

0.00102

2388

5.2

14

49

60

0.808

197

0.85

0.00103

2388

4.4

15

34

57

0.811

192

0.851

0.00103

2390

7.4

16

65

40

0.84

159

0.857

0.00106

2394

2.9

17

56

36

0.847

170

0.866

0.0011

2392

4.1

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Shchetinina, N.D., Antipov, V.V., Speransky, K.A. et al. Investigation of Influence of Gas Atomization Parameters on the Granulometric Composition of Aluminum Alloy Vas1 Powder. Metallurgist 67, 768–781 (2023). https://doi.org/10.1007/s11015-023-01564-7

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  • DOI: https://doi.org/10.1007/s11015-023-01564-7

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