(&-many 1. The ability of PM nrt~tho(ls need for machining tc sut.h threads and undercuts. accurate dimensions finish was discussed.
IO Imlit asprc.ts
att.ainmrnt and good ‘PI-ocessrs
the as
of very surface and the
EVALUATION OF MACHINABILITY OF PM MATERL4L.S WITH HIGH GREEN STRENGTH S.11. I 2uk %1‘. (‘imino Riverton. N?w .Irrsey,
(Iloeganars
t orp.
I ‘SA).
ability to machines I’M materials wert’ outlined, 1001 matcxrials an
regard
t.o surfac,t,
tcbchniqurs,
such
in-process
rffe4.t s. Somts
novel
spt~e~i cutting
and
as high
w
monitoring.
MACHINABILITY
OF I’M STEELS
EVALITATION Additivrs, of
PM
to lmpro\r
steels,
additives
wertl
on
the* mac.hinabilit,y rtavica\vrri.
sintt~r~~d
machinahilib
WC*IY
in drilling
MACHINING - TOOLS AND CONDITIONS t;. Abbott Amrrira commonly
used
speed
tlt~scribed. ‘I’br gro\vitlfi
MATERIALS
ljarts
arid
sirrtcbrcd anti
turning
mat.c~rials
carbidta firlish
of with
tools
was
Efft:cts 01’ S on machining
described. Tool life, surface
WCIP
this
in
IN
OF PARTS
1j.S. Madan (Elkem klt?als I’ennysylavania. ll!iA ) Machining,
t o, f’lttsburg,
as air ~nlc’gra~ stag,>.
production
of slntcarc*cl parts
was
and
sintc~rc~tl
‘I’hc oh,jcrtivcl
of thr
siatistic’al
ivt’h
paper
10
wt’rt’
c~i1l\anc7~ olrt II~IwI.
was to prc,l~~,sc a
mt’t Irc~d
01
ing
rvalriat
ma~hinabilit) rxl)c~rit~nct~ Iiaving shown that slat ist ii,s arc> roqllirccl ttr ;t\-oiti subjrc’tivity
in assrssrnrnts.
was
discusstad machining
tht,
t~cscd to
was
c~mphasizrd.
selection Machinability factors
of
were
I’M
parts
c~onsitlc~rt~tl
It
character3stic.s
;tlr~ti
and
witli
Intermetallic
was
ORDERING DURING HEAT
.4ND DISORDERING
MECHANICAL
TREATMENT
I Ins c,ffects
to
of (‘II
i n I’i It 1.21t i I) I. I’llarlgt~s i 11 ructurr ant1 i~~l~~c.tioir of cutting
materials.
(;. K~,iirni~rshlrc.hc,ir,
STRESS
MACHINED
Apl)lic2tic~~i
MEASIIREMENT
IN
PM STEEL
ilr
rtbgarcl
10 lJrol)(~rlic~~ aiitl
ac~r0sljac.r~
111
were
use
of addit&s
The
11s~ of
other
resin
I(6
strt’sstss ~~xpcrimc~nt
to
imprc~gnat
for anal was
ion
to
in
\*ith
lo\+ (It-tisltv.
I,OM
1trc* 51i1lrrlatt ic.t
r‘t,c.tiI> this
aiiti
I)y alloying
and
two phastb
altoy
\,‘,‘I‘(’
raiigcs with
bascld
mc~c~hanic.all~
stability order
rcsspcc’t
on Ti l(iat’:,Al
10
thrt
equilibritim
and
‘l31,
long
ua:,
nlilling
from
I Irv
(lcst(‘i inlncd
lime.
statlility was in\~t~stigait~d t rallsfornicd at 400 500 t’. ~~ompositiotl.
all~~yc~l
investigated.
l)aranlc~tc~r
(~omparccl. prcbdic?
ion
of
agrI-r~t~lrlc’llt
rc~p~rt tscl
sterls
Models
were
residual with
REACTIVE OF NICKEL
‘l‘lrc~rmal
and alloys ac.c.ortling to
Ill(‘tilStat)l(’
hiAt>
phast~. HOT ISOSTATIC SILI(:IDE
ii
I’Xr
c,~irl\cntionall?
rt’s111 imprt~gnatcd
good
tcihcsd
clisclissc-tl
was
\titlrc’ c)titlrnrXd. TiAl, Tr,,Al and
Phi
seal
)_
ar~cl Ti.,Al
l)rocessing
l.ht,
ol’
rcbgartl
rc~l)r~rtl~d 1~2 improvc~ also. K~~sid11a1 stresses
fac’torh anal
statistically
drveloped
~ll;i~lllll1n~
with
to ~*nlrailc~t~ mac+~inahility.
porosity wa5 machinability proc’tlsstld
illfb
discussthct
cl~.t, 10
altrinl)ls
O.“‘Y>sl
Problems
(;erniany
01’ TiAl
allo,ys
t ht~rmal steels
AND
t;. l~‘ron~n~t~~t~i~(Max
1’lanc.k Iilht., I hisst~hlort;
tlric~tilily. RESIDUAL
ALLOYING
OF ALUMINIDES
critical
rcsgard
0 I’ rcbsi n micro9
materials
design
that thr\ mav aid niatc~rials a1 t ht> pt‘c prodtlc? ioii stagy.
suggested
part
anal
EURO PMW. The abstracts which follow are of papers which were presented at the European Conference on Advanced PM Materials which was held in Birmingham, IJK. in October 19!k?.
in the
need to undt~rstantl proc.tbsses and t hr machinability of sint rrttd niatrrials
were
addit matr~rials
(II’ I’51
afl‘tA(,t ing
rcaviewcd.
The
and
Fac,tors
a11d cost.s
OF MACH INABILITY
PROCESSING
tool
nrc~tl for mac,hining
tlotcd
considerrd
IMPORTANCE
for
was
nia~hinabiliiy
IIIIIII~I~
stet‘l
presented. were
of
?t ut. (Kotwlc~r~\lt’tal l’owdt~~. ot Indiana. I ISA )
on drilling.
OF
and
Inc, Seymour.
Data high
Wft~cts
l)rol)t’rtit,s
OF MAC:HINABILITY
PM STEELS
PRESSING
to