Properties of dispersion strengthened copper made by high energy milling

FINE DISPERSIONS OF CERAMICS IN COPPER BY MECHANICAL ALLOYING T.!Awl

(‘I if/. (I:ni\c’rGty 01 C’hilc. (‘hilt*.) A stud) of MA variables on proccsslng of (‘[I with I’iIlt, cclraiuic, l)artlclt,b was dt3cCl)ecl. Milling time and spt’c’d. and hall si/.cl wCrv clvaluattvi with rt~gard 10 rnor~~l~olo~icul chaligt5 in tl~tt (‘II powders anti dlst ributiou 01’ the cc*rittni(.h.

I)iffvrvnt r~~covcq varied

ial

thermal analysis htiowvd t’t~ctqst~~llizatir,rl yaks \c hich

and

with

millillx

time.

AMORPHIZATION

OF TUNGSTEN-

COPPER COMPOSITE DURING MECHANICAL ALLOYING I’.Gh,YH~gllc~, \.l’imt(*;~. (M~~tallrirgicxl I<($llrst ., I~onrani;~.) 7’hc dkt of inillitlx tmlrx on MA 01 \Z (‘II

h(tarch

powders wxs invest igatcvi. Anlorphizati( 01 was inoriitorc~tl hy N-ray diffrxtion a~ld t tic,vxlrtrt wits found to illcrcu(* with milling tiincs.

Nanocrystalhe REACTION

materials

OF NANOCRYSTALLINE

COPPER-TIN

WITH GALLIUM-INDIIJM-

TIN EUTECTIC T.F.(;ugor~c~va (v ;r/ (‘ht~mistlg. It

(Ind. of’ Solid

Stat0

Russia.)

wab

rryortvcl that c~stc~ndcd solid 01 2Ow’:StI in (‘u had I)ecn attaintsd t)y MA in Ar with cpstal siz(‘s 7 to :10 nm. On Ilcvtting. an t7c\;c)tlltLrrnic. rcxc,tioir was fourrd at :370 (’ with grain growth x~tl l’ornrat~cm of an cquillbrium

solilbilitj

phxc. A(?ivaticm vn~~r~v of’ 80 klmol ’ intiic7ited that diffusion ocurretl. Hc~action of (‘II 20”,3ii with c,utcv,tic, (;a-111&n was in\.ostigatc~ti at urnbir~nt trml,c’t’atllrc~. C‘II(;;L: brxing forrnr~l at ii ratcl dt~l,c~ndrnt on grain six<,. PHASE FORMATION MECHANICAL

DIJRING

ALLOYING

AND HIP OF

TITANIUM-ALUMINIUM-BORON POWDERS ~.II.FIws

caral. ( I’nlvcbrsit~

of Idahl),

Mos-

~‘O~V.Idaho. 1:SA.j In\cstigatlotls 01 MA iis a mt~~s 01 incorporating Til%2 into Ti aliiminid~5 wvrv tlc3cril)cd. l’rc~alloyt4 Tb48at’:)Al artI clrmc~ntal Ti and 15 wt>rc’ usc~l. MA vnsuretl ii firrcs and uniform tiisptsrsion of Ti and 13. yTiAl formcti during HIP with run SIZNI T& l)articlr~s. I’hasv xnd i11i(.rostrll(.tiIral v\oliitioll wcrtx st IldltYl and t hc> rt5uIts ptw,~tltcYl

atrd

tilscussNi.

USE OF POWDER TECHNOLOGY

IN

PROCESSING ADVANCED NANOCRYSTALLINE PARTICIILATE MATERLALS li.K.Andievski.

I Inst. for

Russia. 1 ‘J’h(l IISCof PM trchnlqurs

N
(‘hernial

Problrms,

rl:mocrystallincJ

materials

to I’;tbricat? was

rc*vitwetl