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^112tr "J+Eltsrl r -Ef= 223 c ql^l t5.3o/ool4. Alg ++rJ EIELE AI3Mg' (p)e+ Bril 34.5o/oMg, 451'C ql^'l *A g C ^d + 4. ugql 4+ A19 *"l]s.. gErJ6Ie+ qBq +4 6l ef +4. 451C :15.35Mg, 400C .ll.So/oMs, 300 c :6.5o/oMg, 200"c :3.So/oMg, 150'C :2.95o/oMg ol+. 3, 5, 7 "; 9o/oMe$ *+aJ AI-MgB7g trA * .+E* Eq +*94. ol4g dz]4 os ul 4 EI^J.14 l7l + ^l^))71 =g 4E 't zlEE zlzll- 919 *dql^.lE zlalsJzl *=4. A1-Mg -J+g +g .]lzlcol glgq, 56] sl+ "; ++ ga4 +ql ql ql6Iq 'il 4 C ol *s6}trI. trB 10-491E Etf E E ACTB(Cu 0.L0o/o, si 0.20o/o, Mg 4.7o/o, zn 0.15%0, Fe 0.30o/o)-e =zlg E^]e-l At 7)xlrjg-E. E+5 FeQl 9atl El^49 Al-Fe-Mgzll slEtE ol .J4ql ul,tfia]zll +E]+q, olql ^Jel ++. a(At), P(AlrMsz), Al-Fe-Mgolr4. g zlEl= Tnz.lr-lql elsll *nlElil46Il, HF 5cc, Hro 95cc +4"lg ^I+6IH+. olag tg zlEel qldg ,)= -J?etr.4g^lsql 9"tl 7)Al4 Caql a'J HEI-zI +EI +. Er+olt, dEl+ ++, ^I+ 717), -J+* ++, al ola Fql ol+€4. irB 10-s0lg AlMg so/oA =zlg-tr (a)E +HltEXE +a44+ +EI'J agE, eerJ4+ Fe, Mn'i Si F+ ag Et.E=- "J6Iq olul *col €4Etg el^l6ll i 4. ^I€+Etr^-l AtMe1o/oy 6J+rlEzI 100Mpa, "J*rJE 180Mpa q yl4€tl.l 4o/oz +ElttrI. (b)= trEa}_z HqB+ AlMg 5o/o4l SzlalE d^Je-l A13Mg2 4= Eg +4d z)9tr- a]$zlEE 100MPa, ?l?rlE 420MPa 'f qldg 20o/ool4. trB 10-5113 camglo/o .J+E =zl olq (a)E +rJ^JEll9 =4g_tr +Aol olol d6}al +E}t4. (b)= "JE+ ^JEXel =49-a A13Mg2 'J4EE 4= =4 olr+. trB 10-521E ar-vrgeo/o +4e tr- (a)E €z]t *ag 4= +EJ^J4E =zlg-tr .Jalql +ag ,*. E+"J aJ.*nloltrI. ol EI+g "Jq +=* DAlMge_E +*qq Z-to/o gdgql^l g zSzlEE 180 -250MPaE +rJB 4. (b)= tE 6Ia 'J El 3 o.J z) oE aeg.ll q 5q ee.Jalql +gg At..Mgz 4=Eol LIE}h+g-e 561 Pzl9zl 4Q. aj-$zlEE 200-25OMPa, oJ^JrlE 350-400MPa "l $4199 35-40o/oZ 7+7+ +q,34. er-vrgE}#9 z}EE .JH}4 oE MgdJ=}4 r'lR"l ?z).;}4 olql rll6}q t ^JHB4 *dde Eqrl4. 7lAl4e-E- =g a}6ol 4+61= +lE, dE, +qI q o v 500 u{ "ll 400 700 600 300 200 10 20 30 40 Mego) ral 10-48 Al-MgZl 8eH-=. 660' L N b0 L+o a >'1 451 C t34 o-+-B B