Influence of internal scrap on mechanical properties of selected cobalt alloys
PBN-AR
Instytucja
Wydział Metali Nieżelaznych (Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie)
Informacje podstawowe
Główny język publikacji
EN
Czasopismo
Journal of Casting & Materials Engineering
ISSN
EISSN
2543-9901
Wydawca
Kraków : AGH University of Science and Technology Press
DOI
Rok publikacji
2017
Numer zeszytu
3
Strony od-do
59--63
Numer tomu
1
Link do pełnego tekstu
Identyfikator DOI
Liczba arkuszy
0.35
Autorzy
(liczba autorów: 3)
Pozostali autorzy
+ 2
Słowa kluczowe
EN
mechanical properties
fracture
cobalt alloy
scraps
Streszczenia
Język
EN
Treść
This paper presents the results of mechanical tests carried out on two different commercially available cobalt alloys applied in dental prosthetics for the production of frame dentures. The test samples were obtained by the method of investment casting using as a charge pure primary materials and pure primary materials mixed with various additions of process scrap (25, 50, and 75%). The tests showed that the alloys could not reach the mechanical properties reported by the manufacturer in either case. In the case of the alloy without the addition of tantalum, the general conclusion was that both the plastic and strength properties decreased with increasing amounts of the introduced process scrap. The mechanical properties (mainly elongation) of the alloy containing Ta reached the highest values in the samples containing 75% of the process scrap. Examinations of fractures carried out by SEM have revealed their varied character – ductile or transcrystalline. All of the samples tested showed the presence of dendrites and solidification areas, with shrinkage porosity occurring in the internal sample zones.
Cechy publikacji
original article
peer-reviewed
Inne
System-identifier
idp:111403
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