Abstract
During the sintering of Fe–Cr–C and Fe–Ni–C steels produced from mixtures of powders with different chemical compositions, homogenization takes place. The degree of uniformity can be evaluated from the standard deviation of histograms of alloying element concentration distributions. Such histograms were obtained both by modelling the diffusion processes in sintering and from experimental data. The theoretical assumptions have been shown to give good agreement with the experimental results. Mechanical properties such as ultimate tensile strength, elongation, reduction in area, hardness, and impact behaviour are shown to improve gradually with sintering and homogenization. PM/0333
Get full access to this article
View all access options for this article.
References
1.
Raychenko
A. I.
: ‘Diffusional calculation for powder mixtures'; 1969, Kiev, Naukova Dumka (in Russian).
2.
Heckel
R. W.
and
BALASUBRAMANIAN
M.
‘Source book On powder metallurgy’ , (ed.
Broadbury
S.
), 182 ; 1979 , Metals Park , Ohio, American Society for Metals .
3.
Voroshning
L. G.
,
VITYAZ
P. A.
,
Kh
A.
NASYBULIN, and B. M. KHUSID: ‘Multicomponent diffusion in heterogeneous alloys'; 1984, Minsk, Wysheyshaya Shkola (in Russian).
4.
Vityaz
P. A.
: in: ‘Material science monographs’, Vol. 14, 263; 1983, Oxford, Elsevier.
5.
Saltykov
S. A.
: ‘Stereometric metallography'; 1970, Moscow, Metallurgia (in Russian).