Issue 44

N.M. Khansari et alii, Frattura ed Integrità Strutturale, 44 (2018) 106-122; DOI: 10.3221/IGF-ESIS.44.09

Yield strength, ultimate strength, fracture zone, forward and rotational speed results of welded specimens for both AA5050 and AA2024 are evaluated experimentally. The results are listed in Tab. 3 and Tab. 4 for AA 5050 and AA 2024 respectively.

ultimate strength (MPa)

Specimen name

Rotational Speed (rpm)

Fracture zone Elongation% Yield strength (MPa)

Forward speed

A B C D E

NZ NZ

23.25

71.43 69.68 71.43 78.32 71.40 74.18 71.98 76.14 67.93 74.58 77.08 69.75 71.66 72.32 73.08 75.4

185.71 159.34 197.80 198.65 186.81 195.05 187.41 190.42 153.85 187.91 189.06 135.54 142.54 170.06 177.07 192.3

31.5

630 630 630 630 800 800 800 800

11.5

40 63 80 40 63 80 40 63 80 40 63 80

HAZ

31.81 34.21 23.91 28.71 25.12 25.85 27.56 25.63 26.05 10.7

BM NZ

31.5

F

TMAZ

G H

NZ NZ NZ

31.5

1000 1000 1000 1000 1250 1250 1250 1250

I J

TMAZ

K

NZ

L

TMAZ

31.5

M N O

NZ NZ NZ NZ

7.07 9.63

15.93 18.02

P

Base metal

25.1 210 Table 3 : Experimental evaluation and tool speed of AA 5050. 110.85

Yield strength for 50 mm/min forward speed (MPa)

Ultimate strength in 90 mm/min forward speed (MPa)

Rotational speed (rpm)

Specimen name

Fracture zone

Elongation%

A B C D E G H F

NZ NZ BM NZ NZ NZ NZ

12 13

266.4 287.6 308.8 351.2 372.4 393.6 414.8 330

373.8 380.4 393.6 400.2 406.8 413.4 426.6 433.2 439.8 446.3 442.9 439.5 436.1 432.7 387 420

450 500 550 600 650 700 750 800 850 900 950

HAZ

12.4 12.1 11.8 11.2 13.2 14.7 15.2 18.4 20.8 17.8 15.5 11.9 11

TMAZ

I J

413.35 411.9 410.45 388.77 368.54 348.31 328.1 409

TMAZ

K

NZ

L

TMAZ

1000 1050 1100 1150 1200

M N O

NZ NZ NZ NZ

P

8.4

Base metal

210 Table 4 : Experimental evaluation and tool speed of AA 2024.

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