Figura 1

Figura 2

Figura 3

Figura 4

[ ]0002

Figura 5

Figura 6

0 5 10 15 20 25 30 35 400

10

20

30

40

Grain size (µm)

MgY1Zn0.5

0

10

20

30

40

Frec

uenc

y (%

)

MgY2Zn1

0

10

20

30

40MgY3Zn1.5

Figura 7

Figura 8

Figura 9

0.0 0.2 0.4 0.6 0.8 1.0 1.20

100

200

300

400

True

Stre

ss (M

Pa)

True Strain

MgY1Zn0,5 extruded (ε=10-4s-1)298K

373K

473K

523K

573K

623K673K

0.0 0.2 0.4 0.6 0.8 1.0 1.20

100

200

300

400

True

Stre

ss(M

Pa)

True Strain

MgY2Zn1 extruded (ε=10-4s-1)298K

373K

473K

523K

573K623K

673K

.

a)

b)

0.0 0.2 0.4 0.6 0.8 1.0 1.20

100

200

300

400

True

stre

ss(M

Pa)

True strain

MgY3Zn1.5 extruded (v=10-4s-1)298K373K

473K

523K

573K

673K

Figura 10

c)

300 350 400 450 500 550 600 6500

50

100

150

200

250

300

σ 0.2 (

MPa

)

T(K)

MgY1Zn0.5extruded 723K MgY2Zn1extruded 723K MgY3Zn1.5extruded 723K

Figura 11

300 350 400 450 500 550 600 6500

50

100

150

200

250

300

350

400

UTS

(MPa

)

T (K)

MgY1Zn0,5 extruded 723K MgY2Zn1 extruded 723K MgY3Zn1,5 extruded 723K

Figura 12

Alloy %LPSO HV MgY3Zn1,5 35 84.7±0.6 MgY2Zn1 21 82.5±0.7

MgY1Zn0,5 9 65.4±1.1