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222 ^11108 Hltr-sr=ql 44 trB 10-4619 =Cg cu 3.78o/o, si .z;o/o, Fe 0.23o/o, Mg 0.02o/o(Et"E:ACZA (lautar))olf, olag ?€i= =zl o_E a+ilE aag zg+e(aNt+Si) q 3g+a (arj+d+si)ol s.+l+ =zl olq, FeE BfE-tr-^-l a^Jg El-EtE^Jo-tr- +4+ zlEel €dgg zJtrl 7JL+. siElulol E*98 39 ElEtEg €^"r6}q ,fleg A+6Ial +q. +4'l* ur' 0.5cc, H2o 99.5cc9 ^I*6194. tf. A1-Cu-Mg-NiZl -Et=el 4^l qag dzlal€ +4, ul:ullf9 l*rlE]e+ 4=r}+s zlE=- tso14, ol 6J7E *lgs.HqzI Hq *r++ql 9aI ga+g(hot tear crack)ol .xlzlzl f + 6J7ol rI. lq+ r.ilgC+ uI"IECol *fal-z d+Cs ++6Iq datrl =oil_=,4dzlt, 6J*zl* ++ql a=_ ol++tr}. tr? 10-471E -J+83 ecseoE =zlg =co9 fzlt ^Iolql AlrNiol ,lA) + 49q 9lgq, Fe= i"* EI++ sl^4el At-Ni-Fezl E]6JE:ol +4+ gl4. ol"I ^JE ++. Alrcu(d), AlrCu-Mg(s), AlsNicu(Y)dt9 = .JA^Jel 4=rlElg zlEE ,*= 'J+9E^.1 561 'll tscol +4. -r.41 gi]4ts Tu7l46IH+. Al-Cu-Ni Al-Ni-Fe q ral 10-47 ACsA 6^l 4. Al-MgZl il= Al-MgB+ql^-l d-$H9l= tZo/oalz) MgE -J++trI. tr? 10-4813 er-ugal ^JEI E= +Eld 4olq. a-a*;tl= Aloil rll+ Mg9 r*nl_E_^.1, Mg9 aql r**3 +sr
234page

4. Al-Mg계 합금
234page

4. Al-Mg계 합금
234page

4. Al-Mg계 합금