Almascan wire
Almascan Alloys by SMW – Properties Obtained After WAAM Process
The mechanical properties obtained are shown in the Tables below.
- Impact toughness for all the alloys within the Almascan system is at least 200% higher than for Al alloys of other systems.
- The strength at the weld seams is 90% – 95% of that of the base metal.
- The welding speed has no noticeable effect on the mechanical/strength properties of joints.
- A completely recrystallized structure is formed, consisting of equiaxed grains in average size of 1.2 nm. The density of dislocations is practically the same as with base metal ~ 4·1013 m–2 . The volume of Al3 (Sc, Zr) particles remains, equally coherent, while increasing in size to 15 nm each.
Alloy |
T, °C |
σв, MPa |
σ0,2, MPa |
a, angle ° |
KCU, J/cm2 |
σ E0,66 Y |
SMW-70 |
20 |
440 |
325 |
88 |
28 |
4,36 |
-196 |
535 |
380 |
- |
- |
5,12 |
-253 |
610 |
410 |
- |
- |
5,52 |
SMW-70M |
20 |
415 |
320 |
97 |
31 |
4,31 |
-196 |
510 |
370 |
- |
- |
5,0 |
Alloy |
T, °C |
σв, MPa |
a, angle ° |
KCU, J/cm2 |
σBc.c. σBo.m. |
|
seam |
HAZ |
|
SMW-70 |
20 |
410 |
98 |
34,5 |
23,2 |
0,93 |
-196 |
480 |
- |
- |
- |
0,9 |
-253 |
520 |
- |
- |
- |
0,85 |
SMW-70M |
20 |
400 |
100 |
35,2 |
24,1 |
0,97 |
-196 |
480 |
- |
- |
- |
0,94 |
Alloy |
Welding |
Welding speed,m/hr |
Pulse welding regimen |
σв, MPa |
KCU, J/cm2 |
a, angle° |
|
pulse,s |
pause,s |
|
seam |
HAZ |
|
SMW-70 |
Continuous |
10 |
- |
- |
410 |
34,6 |
23,9 |
98 |
15 |
- |
- |
403 |
35,1 |
24,3 |
98 |
25 |
- |
- |
408 |
36,0 |
24,6 |
101 |
Pulse |
12,5 |
0,2 |
0,2 |
418 |
36,4 |
24,8 |
102 |
0,3 |
0,15 |
410 |
36,1 |
24,5 |
100 |
0,3 |
0,2 |
415 |
35,9 |
24,4 |
98 |
Almascan powder
The parts do not require solution treatment followed by quenching. Higher properties are achieved after conventional annealing.
Powder characteristics |
O2 content, % |
≤0,08 |
Moisture Content,% |
≤0,03 |
Shape of particles |
Spherical |
Non-metallic inclusions |
None |
Physical properties (sintered material) |
Density,g/cm3 |
2,658 |
Porosity,vol. % |
≤0,35 |
Mechanical properties at room temperature (printed samples)
|
As-printed |
Annealed |
Elastic modulus E, GPa |
X Y |
72±2 |
72±2 |
Z |
TYS(s0,2), MPa |
X Y |
290±10 |
438±10 |
Z |
290±10 |
435±10 |
UTS (sB), MPa |
X Y |
370±10 |
480±10 |
Z |
365±10 |
475±10 |
Elongation d5,% |
X Y |
25,0±2,5 |
10,0±2,0 |
Z |
22,0±3,0 |
10,0±2,0 |
Hardness, HV |
95±3 |
150±4 |
|
130° |
200° |
TYS(s0,2),MPa |
z |
340±10 |
200±10 |
UTS (sB),MPa |
z |
365±5 |
220±5 |
Elongation d5,% |
z |
32,0±1,0 |
28,8±1,5 |