Abstract
A boron alloyed AISI 316L, sintered in pure hydrogen at 1250°C, was investigated to study the effect of the microstructure, with particular reference to the near full dense and boride free surface layers, on corrosion resistance and impact properties. The near full dense and homogeneous austenitic surface layer results from the flow of the liquid towards the bulk of the specimens during sintering. It significantly improves the corrosion resistance, while impact properties are strongly influenced by the bulk microstructure, where the boride network creates favourable conditions for both nucleation and propagation of crack.
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References
1.
Tandon
R.
and
German
R. M.
Int. J. Powder Metall , 1998 , 34 , (1 ), 40 –49 .
2.
Madan
D. S.
,
German
R. M.
and
Lall
C.
Prog. Powder Metall , 1986 , 42 , 307 –326 .
3.
Molinari
A.
,
Kazior
J.
,
Marchetti
F.
,
Cantieri
R.
,
Cristofolini
I.
and
Tiziani
A.
Powder Metall ., 1994 , 37 , (2 ), 115 –122 .
4.
Liu
J.
,
Cardamone
A.
,
Potter
T.
,
German
R. M.
and
Semel
F. J.
Powder Metall , 2000 , 43 , (1 ), 57 –61 .
5.
Molinari
A.
,
Straffelini
G.
,
Pieczonka
T.
and
Kazior
J.
Int. J . 14 . Powder Metall , 1998 , 34 , (2 ), 21 –28 .
6.
Velasco
F.
,
Anton
N.
and
Torralba
J. M.
Mater. Sci. Technol . 15. 1997 , 13 , (10 ), 847 –851 .
7.
Kazior
J.
,
Pieczonka
T.
,
Ploszczak
J.
and
Nikyel
M.
Proc. Euro16.PM2003, Vol. 1, 281-287; 2003, Valencia, EPMA.
8.
Kazior
J.
,
Nikyel
M.
,
Pieczonka
T.
,
Marcu
T.
Puscas and17.A. Molinari: J. Mater. Proc. Technol, 2004, 157-158 , 712 –717 .
9.
Becker
B. S.
and
Bolton
J. D.
Proc. PM World Cong., Vol. 2,409—18.414; 1998; Granada, EPMA.
10.
Toennes
C.
,
Ernst
P.
,
Meyer
G.
and
German
R. M.
Adv. Powder 19. Metall ., 1992 , 3 , 371 –381 .
11.
Sarasola
M.
,
Gomez-Acebo
T.
and
Castro
F.
Powder Metall, 20. 2005, 48, (1), 59-67.21.
12.
Sarasola
M.
,
Gomez-Acebo
T.
and
Castro
F.
Acta Mater ., 2004 , 22 .52 , 4615 –4622 .
13.
Molinari
A.
,
Straffelini
G.
,
Kazior
J.
and
Pieczonka
T.
Adv . 23 . Powder Metall , 1996 , 5 , (17 ), 3 –12 .
14.
Molinari
A.
,
Pieczonka
T.
,
Kazior
J.
,
Gialanella
S.
and
Straffelini
G.
Metall Mater. Trans. A , 2000 , 31A , (6 ), 1497 –1506 .
15.
Selecka
M.
,
Salak
A.
and
Danninger
H.
J. Mater. Proc. Technol ., 2003 , 143 , 910 –915 .
16.
Selecka
M.
,
Danninger
H.
,
Bures
R.
and
Parilak
L.
Proc. PM World Cong. , Vol. 2 , 638 –643 ; 1998 , Granada , EPMA.
17.
Park
H. H.
,
Kang
S. J.
and
Yoon
D. N.
Metall. Trans. A , 1986 , 17A , 1915 –1919 .
18.
German
R. M.
: ‘Liquid phase sintering’ ; 1985 , New York , Plenum Press .
19.
Park
H. H.
,
Kang
S. J.
and
Yoon
D. N.
Metall. Trans. A , 1986 , 17A , 325 –330 .
20.
Lee
S. M.
and
Kang
S. J.
Acta Mater ., 1998 , 46 , (9 ), 3191 –3202 .
21.
International
ASTM
, Designation G 102 –89 .
22.
Sobral
A. V. C.
,
Ristow
W.
,
Azambuja
D. S.
,
Costa
I.
and
Franco
C. V.
Corros . Sci ., 2001, 43, 1019 -1030.
23.
Stoyanova
V.
,
Molinari
A.
and
Straffelini
G.
Powder Metall Prog ., 2004 , 4 , (4 ), 243 –257 .