Shigeru Tanaka 1) Kazuyuki Hokamoto 2) Shigeru Itoh 2) 1)Kumamoto University 2)Shock Condensed Matter Research Center Kumamoto University S hock wave and condensed matter research center S hock wave and condensed matter research center Explosive welding of aluminum plates with aluminum wire mesh and WC powd
Explosive welding of aluminum plates. with aluminum wire mesh and WC powder. Shigeru Tanaka 1) Kazuyuki Hokamoto 2) Shigeru Itoh 2) 1)Kumamoto University 2)Shock Condensed Matter Research Center Kumamoto University. Contents. Background and Purpose. - PowerPoint PPT Presentation
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Shigeru Tanaka1)
Kazuyuki Hokamoto2)
Shigeru Itoh2)
1)Kumamoto University
2)Shock Condensed Matter Research Center Kumamoto University
Shock wave and condensed matter research centerShock wave and condensed matter research center
Explosive welding of aluminum plates
with aluminum wire mesh and WC powder
Contents
Shock penetration of diamond powder into aluminum plate
Background and Purpose
Experiment
Numerical simulation
Explosive welding of aluminum plates with aluminum wire mesh and WC powder
Conclusion
Experiment
Numerical simulation
Conclusion
Future works
Background and Purpose
Background
Many automobile component parts are made from aluminum alloy.
Purpose of this study
Investigation of adding hard materials to increase the properties of aluminum using two proposed methods – experimental and numerical study
Heat release and wear resistant materials are required for some automobile components.
water
Steel
PMMA
Explosive Electric Detonator
DSample
water
Steel
PMMA
Explosive Electric Detonator
DSample
Base plate
Flyer plate
Diamond powder
Water proof seal 0.5mm thickness
Shock penetration of diamond powder into aluminum plate
Explosive welding of aluminum plates with aluminum wire mesh and WC powder
100μm 100μm
Optical micrograph of recovered samples
(When the layer is varied)
No.1 (D=10mm)
Explosive welding of aluminum plates with aluminum wire mesh and WC powder
20μm
Magnified optical micrograph showing the crushed WC particles and aluminum
Explosive welding of aluminum plates with aluminum wire mesh and WC powder
SEM image of fracture surface
Water
Explosive PMMA
Explosive welding of aluminum plates with aluminum wire mesh and WC powder
10mm
10mm
10mm
10mm
Measurement points
Investigation of pressure history
0
0.5
1
1.5
2
2.5
3
0 10 20 30 40 50
Time (μs)
Pre
ssur
e (G
Pa) 10mm
20mm
30mm
40mm
Explosive welding of aluminum plates with aluminum wire mesh and WC powder
Numerically obtained results - pressure vs time
Explosive welding of aluminum plates with aluminum wire mesh and WC powder
10mm
SUS plate (0.1mmthickness) + aluminum plate (0.1mm thickness)
Investigation of flyer velocity at 10mm
0
200
400
600
800
1000
1200
1400
0 0.2 0.4 0.6 0.8 1
Distance (mm)
Vel
ocit
y (m
/s)
Explosive welding of aluminum plates with aluminum wire mesh and WC powder
Relation between acceleration distance and flyer velocity
Flyer plate
Base plate
Mesh wire
WC particle
Explosive welding of aluminum plates with aluminum wire mesh and WC powder
Simplified simulation and cross sectional view after etching
Conclusion
Particles were crushed by collision of particles. Some traces of particle pull out was observed.
Explosive welding of aluminum plates with aluminum wire mesh and WC powder
There is a possibility of explosive welding between plates and mesh.
Good samples were recovered using this technique.
Future works
For the purpose of improvement of thermal conductivity of aluminum, Large sized diamond particles and aluminum wire mesh will be applied for making a Al-based composite material.