“Influence of Si, Sb and Sr Additions on the Microstructure ...

Chapter 4: Results <strong>and</strong> Discussion
-1 4I
|
1
3000 - 4 ‘
3500 4 _~
I I Mg i
" l O Mg"A|1zI |
'5 2000- \
.... 500- * '
000 -+. I
,_ I
600 - ' i
0
20 1 ',.~._Jb | 00 I * 40 r - 50
JLJLJ1\1_A 1 * 00 0 1- 70 F 00|
26
° no no
A1. 1'. <strong>Si</strong>
Figure 4.4: XRD pattern <strong>of</strong> AZ91 alloy showing peaks for Mg <strong>and</strong> Mg,-,Al|;
lntermetallic
, ‘ . I f ‘I 5‘ I
8&1; _ _[~ sq ‘O ‘ ,0 1? ::‘I‘___ ’—‘;\:
1:oo;>~4~~~4 s—~ —~— ~ ~@~ ~ 4 ~¢~~~—:
1? ‘ !~ Ll'§V}d j = !
/1aa;+':>>-;- 7 4--4::-4» *1 7 ~‘ ~ ii 0- ,~:=-=-—05** "l“*~—s~=>
0005+ _ ff A — L v—
0 ___J;‘___ I” i§ . 1 __ 3:____ .._.- ii ___.=_i__ ____
‘O00 ’ "_?OW ”z'—j0 **”_36**‘?0 H 00 BO I00
W1} <strong>Si</strong>
Figure 4.5: Phase diagram <strong>of</strong> binary Mg-<strong>Si</strong> alloy system [248]
86