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flluecgru8rs ere.lt s,(o11e 09)Z pedVJiIJo sel€r uorsorroc egl 'llnser eql sV 'peurroJred se,r,r. q S'I roJ ) ELg $ luetuleerl leeq ',Q1suep
uorlecolslp Surcnper rog 'ssecord 4y3g Surrnp .fllsuep uorpcolsrp pue spunodruoc cllleleuuelur Sutseercut otr enp eq uec srql 'sessed
4y3g Surseercur ,(q peuelee.u s€1( slsel uorsJerrfiur Suunp peur.rog rulg e,r.rssed e pue 'pelerirlcs se,l\ uorlc€eJ tlpoqpc leql pelseS8ns
selrnc uo4ezrreyod crureu.{por}ue}od 'sessed 4y3g Jo Jegrunu Surseercur ,(q peseercur s,(o11e g9y7 pedvCg Jo seleJ uolsoroc
eqJ 'uoqnlos snoenbe IJ?N %ss?rrr S ul struourernseeru uor]ezrrelod crureu.(porluelod pue slsel uorsJer[ur Eursn pele8rlss,tur
se.r.r, (6y39) Sursserd rep8ue Ieuu?qc lenba ,(q pessecord s,(o11e (99y7) tzohssevtq14t7o4ossewg9-314Jo ocu€lsrser uorsorro3
(Ll1Z' E requreldeg pe.ueceS)
iToJoI IV IIN qn(orr11 'alvfl{ petuuleqnl {'*vi[yxnung o,(A'*vsvn1 oJrrlolol^I
3u1sser4
rBInBuy IauuBrIJ IBnbf, ,(q pessecord s.(o11y runlsau8e14l Jo aruulslso5 uolsorroJ
(E BZ H rr + Lr1Z) +,**WW{!*2|Ety h\1 LT L <.{,-.r n*Y+*EE1 H* Lr)Z
i: ECAP r[rr\, -",l->,, A6b./)mf€141.&t$
tY,tEtjX ( bi.-r(L\/JL\a;rirj,{ f b6. Z-(-, 66+4c{1, HrAE,E,f+ffi tlf+ L L(tu btL6Mg-5.5mass%Zn 0.6masso/ozr (2K60) A /fkit*. L
L, ECAP TErt)\ Z .]frt€l'S f .& [S9- *E{Wk flE b h,
t.-tr 6 A fr\<'ffi ii b'fi ,:> k.
2. tffir,*+w7ir t*, zK60 a /& affi ,!fl fz a f+;d tt L t_ L.
ZDtz+fitrfr,d:Tabte 1 i.z.f. ,{A6l*, -</l-y,
^ EtH tr l: A,tr H,f Yd +h fi\'tX*fr+fr fr.tr 6 tfr t+iffitz
ry & ryidi16'< ?l-:/, A. 6.Tbrv) , .o+tfrVli*, -< V l-r,
^e+olffit€1'4t,:trgf 5 #gff#tr+
o>-->r:b;6. ECApilIi*, Fig. 1 [:zrf,tr##r]rp- 1 10'O#ryft ffi\,., +ryff U{IEA: 2 mrnJmut, +F
rffl LiHtr& s23K L La't1->f:. /rfi, ECAp r[IA:fi )lt*t:, ?7ntta*.*ri* ECAp 6+-e6EB,tL( L* , . Lrt\bh,-;f:ttb, A,trffi.fY,L;+hL:l^
iJtr*lt 616{+|V.N!W (solution treatment, ,-(T ST)
k 6e3 K, 24 h (D +l+<'-*)yt Ltt ttffr l- t:l{, p.c/.p
I[ r afr ,kr 4 ): z'I- - fi. D)T, sr kls -> t:_ zK60
k 0 ^ztt, ECAP r[r&'|1.>fi ZK60 d:?o>t:ztr4il:ffi Da t rzttr, 2 ):z+t, q t:zt:t & ry"$.
6 ---,{,ffiA,Fi o f;tr fr#, b ffi*t 6 f: h #EHE.t(Scanning Electron Microscope, t-(T SEM) k Hvrf:-
tflfrtf;E*Lll">f:.
Table l Chemical composition of ZK60 alloys (mass%).
Cu Ni
5.5 0.60 0.03 0.005 Bal.
mi€'l&oa+'fffii*, JIS H0541 i.#ro L/:lHzki*iH;t,ffAi. } D t1->t:. ffi€.wu, tkwv;< r'l-> , Lt:I 9 pH 6: tO-tt i.;rflgL/:5mass%oNaCti6iit&,Hr,.,
i6r.&i8,tr 308 K & Lft. 6;d$A ilbwtrtrtnti.I D
rp10 x20 mm a Efi:{tl:tZ D frL, SiC ifffiffi&ffir,.< #2 4 0 -#2 0 00 E r i,E ,t6f E L f:t{, t ;-E o i6 l.rt I : ;{
W6WL ffil,,<,,ffiA'f& +-m LWXLf:t(",,C,ffi
Fig. 1. Schematic iilustration of channel in ECAP die.
ffi& a Heffitr n. b,EAE tr k H fr \- t:.* /:, ECAP Inrl:i+ Lf: zK60 66affiixt?.*
++'l+.be+lffi.i- 6 fth , 5mass%NaCl i6i& + ("AfE frfrRktl\tr L/:. AtIUE<"i*, Gffitfrt zK60 A6;{,,54,,Ei, EffiA EAEI6, >WtMk AglAgcl ffitE l L,-;{^EA,H- & 5 mas s %N act lE t&t t 1 B$ Ffi iE ie* L f:Ik t : jlrl
fft'tl-t:. ffi|iffi1ltr,tr1* 0.1 mv/s l: Lf:.
3. ffitfi&d#H3 1 fEfitr*E*ftE*
Fis.2 i:6;{,$A,tio SEM SHAz<f . O ^zttTil, ttt. L /. L.a)Atrffi ,fY,6+rrt*Hl# L, t=if.rFtE &
ft.-:<v\l:. ECAp rtUILffi-+- L E.E,("2.3fu6ARlfrttdth/Ljtf ffi L/:. tfrfr+r)t* ipm UTouJ. g r, r
6 oi. B, s pm fgtrI:FIE L/: 6 o*<"fiE,X < E, 6ltLfi\, t:z*..r-tYfi[ & & 6 t.?D*.**3 5 i*]Htr[ L(t,.6 & ? t.Ha$-tJ bttf:.
Fig.2. SEM images oiLar Sl::- : - la-ss ECAped,
(c) 2 passes EC-{Pec" nar : - :.s:es ECAPed
MgZn
' (D=110"
-26-
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sJsel uorsJeruur ruo{ poJns€oru suerurceds pedYJE
oql Jo so.\rnc uorlezrrelod crueu,{por}uolod' s 8lc
r0l z_01 0_0 l, ,_0 L s-0 L s-0 L /-0 L 8-0 L6-0 L
L'
'suerurcods podvla
sossed, (p) pue 'pedyJg sessed 7 (c) 'peaVJE
ssed 1 (Q ' poJS (p) :uorlnlos IJeN o/osseus ur stsol
uorsrorurur roUE sueruroods eql go ecuereeddy'y'3rg
IJeN %SSeIUS ur slsel uorsJerurur ruo{ pomseolu
suerurceds pedvlg erllJo eler uorso-uo3 'g '3rg
.cz1.N7 +tEH)t Q Y4.1n(F+g
y y +owlLct c- 1 oc-.?'1 E(H+:?{dHlH9€oH.
\t '4 2+n+ffi<qffiu;clw 'r sf )1s-H 0 f :t? ) 2I Els?9ll 'f,l f+ dvlE '+*4H*14(a HW
Fg?'t +94r4+Hfl,gffi 'rrv$FcFtEt{rHlrt r '8rd
' ),1 +' 41Vl {fi :?T'lH $c4 4 tt 4' [(H+sB ER@&a c-fl,:l I +ilq?+\qwy>1 (a dvJE' ) El9 H:?EBl€,rucay*Y |1 0 'qq;LQ g ?Q 4 +?Tl$lH,Wo SY4FC*11+ * HIH e.TWFgHtEt{/HlXl €'8rc
L-aoo r- lq)
r-<,a,_mV-
l-
\qr_TlBslr gH:(f*x;t 0' a T s'31{' ?i1)--t }!44: r/t )--l 0 rElsg€HAEl9 9:l (ftill.rB:741
E,) llH,H ' 61qlH*E+ac--+*4 * trEpoHIEHr(4!9 +WT/ rtr+ g4g-Fit 'f,l4rtrg-tt r1q B E:
# s g ('rds),ryE 9U r I IrHIY* H .J - 1 L )- r 1 st : t'f'li H $1
* u 11 e4 :t -!i!4s9(p )-.:-4'+9" H#H 4+ { a HW
4VflQY 4 /?* ..4 2- ') ? : 2 +t+bV4:14..1 -_
^ 4'!14S - I / CI T rlHi(W4*{,o+HtEt>fgf
ffi'-a +Etw=t T.l,+i*?l gE.w dvcl o'o
' ? 8 J-:7 1 ) 9 11*4Hl,EgIsr11 il-tl4W{ A
r.z ) tYsBMqitlWHl#H '0 Trl 1)2+21+H*\vv y+azrl? B 'H{+:l 4Yt aI rl dvlg 's7
Eh9\lLilHq:1 r I .)- 1 9ttr ItHEF:t + E+E) JS' )- 1
? M Hr:1 1 2l %,:AilH$, I c-f.):l ilr?+ owy : 1 (o
dvls 'J.&W* ''+4tt+ 2Z=? ?1+B+il)rlHflZ Trl4ltrrl+g '?Elczrz ) 8Ys7y y+(orh
971.t-Jg9' a4ltT' 2gn+X+ q .,r ? 9Jz )E!ttx (|awHrl+ga s I 4-H4*2tr8*8. rB' ) 1+xr)E+.j -,r/s7ll*.:l -r L( 'r,18 'rr-s 2,\)-147E{s7 ? ) q q:? I (S}? -f-*il|?@ru rr T rliiliEtl+gq+4 E+S - I / 4E*3it-n'E+..1 -_ i (.4tuklVlHA
FJV '0 qlH? 0 T (E+ aw-D) E*eLv 41*.( z^
' tt rt492y*H9o + q+i "r 4 4 * .I z.' :t ryHHfr -
oa
ao'f-0)
o
3=o0)-
#.8+tl4=lT],HlUr? dVC= Z 0
F'fqU l: b 0, t \ z *\o iffitrn l: & i, +LAE4g ,r 41FU ( E,ffnr,fEv.,fqu) t:E&L(L\6. t*i:, frLEAEtri\Hi.-r f: + ,,:267&E€8.{f & TLAE,ff ,\7FH[:
,\4rr4 5fuA.*.t:, Hlirfi\-l.7 v,'-1.5 y ltfrafi y- i^ffifRl:
*sr,.<, ^
z*7)tYrt[[.i+-, (, lE-€.ff i-*i i] 5Eifrffi,trrltHin u<u\6: L irb, ECAP t.t,q rty* l.'tr,ffO{EEr\trt-;(tu \6: L /jbi.b. l.&i*, Fig. z otrtrl#fB-H-i.^ 3 tLA t ) lt p,cxp o-;
^ z #ka ffiilttr:_l*.> (, 6tr Ffi ,f V,6+hr a +t 4 x'r\ rH
rttvfr: L t. t- D )r y- f^tr,frrr,f/eE $ fuf:. t d:
HffiU<t,.5. 5 bi:, g,1g-1.4V--1.3 \/ 07 / *f'" #fH i: ts t' \ < ii IE -E ti.<' 7 / - f^tr,fi o,*re,t/r*rb, -? r'l-r, A4 *>Dldfr+a,f/Erer\tr:-: (1t 6 . t fi\ttfl'5 . U,LA I t i. B, BCAp lnIl.,f+5 tt f:-< / l-yr.aaai*, ECAP L. & L' aRffrttdthat) 4 Art\ffifirL/:I L i.I6tr*[ffiiet.t 6ffiHo,fEffii:trni, scap trrri: kD#zr,tt ft#ilirt: t_ D -" v" + y, A EtE a H r]-l6hlfi..fr.
D t,f ( /r-: f:L4*<'3 6 {.
3. 4 F,&roIE75rffiilA,lt t= & 6.t Y.tE
fit++o#rEl6qr;, f,{@}Si: t 6@'IH 'BffEffi(",fET 3'ir6 : &
'r(3 5. ?: (", +6rnTtt,
6 ncap tt 0,2,4 r:^tt) i.if L(, 673K,e0 ha+ANltHL t1 -> f:. z a**Nttptt i.r'f L (, lHzkiE
l_<*fiFA&1Tr,., "Dffipfitrb
ris.3 o ECAP HEOHk)frtrLLL$Ltt. ZoffiRb Fie.6 [:z<f. 1
t\7, 2 ,:^tt],.r$L(il, ffiAEtrrr+/5ir, pL,HAtr,troHi'o L q rzttTil, ffi€tr,qii 3
,;a t *.<'lffi.Dt 6 /r P, F,{@rEi. & D ,\S < mf€'fHr\ ffil.t Lt I Lfi\ttft,6 . ao): & i. b , ,9lt (
4 At.X 6,tr#[Efrf,DE.*EEX D , ECAP Fl:g:2 5ttL#*AE k 6 7 ) - pl6fr1t. k 6 *R t$arfi\ )t 3v'h_4Z\*LA.
Fig. 6. Relationship between corrosion rate and
number of ECAP passes in the as-ECAPed and
annealed specimens.
4, ffiEfr
ZK6O -?II-V' AE/TK ECAP tr[Ii:HLf:F*el-frt ft++. t IHzk iEiq*idffi , tr L\ i. A& ffi frfl n. B ;+,fffi
a ta.
Z rlfrER, ECAp ): z*kr_tYrtil,:l+-(, tHzk+
(" oEAE,tr illHtru, f rt t> bfrtft++.fiy+; tzt' 6 .L 6: F-it)|-f:. * l:,,HA#Ho&E*ff#R h' t> t\ z+kat\)ilt. t- D , +LHa#&iEE[n\rHtrn L<1,.6 :L fi\bfi'->fi. At6#fFl.*ju \(, F,CAp t-< z*katYilrt.l+., < +Lfi-ffitrf,i4-,fErl i:trB L ( r, r 6 t L h,
E,, BCAP i:T 4 4ghFF^EEHfiIEB( /r 4, TLA'\E: 4 t,f ( /ro kJ_ Lr\z.r4 5 i-r6. #HfrffiEf,*off#
R L Airii( 4 ZA L, ECAP i. & 5 frt€:++.D'ht?,
l*, ECAP Fl:659U4Bffrtz,/';+hatiltn &, }H
)ilt 6+,rlt-EE l:ftEtr j- 6 6 o> (" &) 6 : & fi\4 z c)
X 6ffi'fA'f+ztZatF.B L L<+li btl6b@ffrtY,A\ht: x 6 F#$H,tfr7>HW Laitirffitrr,t k 67./ - f^
l8frFlEtr 0> Y,eEr tJlAA aHrgrr ,t 3 v' t: 4 z b tt,
6.
L
o
cE
o)(oL
C.9aoL
oO
I
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pacuo^pv ',,ror.Leqeg uorsorJoJ prru sergedor4
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'(bOOd gB-nL'ggg'y Sut"taau8ug puo a)uaDs slDuaruA[
' *qI6Zv Ko1g-y umrseu8etr4l 1se3 erg pe8y go ecu€]srseg
uorsouoC,, 'uqoflS 'H'C pue sol.rog'1'y ,8uog 'g' GAei UZ-AV7' 1p' acuatcg uotsoLto)
'..A\6ZV $erar(Jo uorsoxoJ eql uo ern]on4sorcrl^l
Jo ecuengul, 'qcsn8req 'I I pu€ sue4v 'y .8uog .g
' GOO) AZZ-ZZ7' g9y'spunodwo) puD sto11y to
lou.mol",.(o11y runrseu8eW rcN Jo rorleqeg uorsorroJ
pue ernlcrulsoJcrl^I uorpruJoJec crls?ld eJe^es uoo,^Aleq
uorlelel{ eq1,, ';eu8e16'T prre lezer1g '( 'nureH .g.D
'@tOd OtZ-VZ7';y' {3o7oqca1 puD iluans'Suuaam8ug uotso.t.toJ,.,umrseu8e111 ernd pedvCg
Jo uorsorro3 uo secuengq JelceJeq3 uerg,, 'seneq .1 .11
'3 pu€ reserc '1 '11'ueuuprn s 'uolslsu'(I') .slllqrlg .N
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,
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urnrsou8el4i Surpuelsrepun,, 'sue4y 'y puz Suog .g
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wx*g'2
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