Designing and controlling the microstructure of 37MnNiMo6-4-3 hypoeutectoid steel after continuous cooling
PBN-AR
Instytucja
Wydział Inżynierii Metali i Informatyki Przemysłowej (Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie)
Informacje podstawowe
Główny język publikacji
EN
Czasopismo
Journal of Achievements in Materials and Manufacturing Engineering
ISSN
1734-8412
EISSN
2300-892X
Wydawca
International OCSCO World Press
DOI
Rok publikacji
2013
Numer zeszytu
1
Strony od-do
24--30
Numer tomu
58
Link do pełnego tekstu
Identyfikator DOI
Liczba arkuszy
0.42
Autorzy
(liczba autorów: 1)
Słowa kluczowe
EN
hypoeutectoid steel
CCT diagram
metallic alloys
EDS analysis
Streszczenia
Język
EN
Treść
Purpose: Present work corresponds to the research on the kinetic of phase transformation of undercooled austenite of 37MnNiMo6-4-3 hypoeutctoid steel. The kinetic of phase transformation of under cooled austenite of investigated alloy was presented on CCT diagram (continuous cooling transformation). Also the methodology of a dilatometric samples preparation and the method of the critical points determination were described. Design/methodology/approach: The austenitising temperature was defined in a standard way i. e. 30-50°C higher than Ac3 temperature for hypoeutectoid steels. The technology of full annealing was proposed for the iron based alloy. The CCT diagram was made on the grounds of dilatograms recorded for samples cooled with various rates. The microstructure of each dilatometric sample was photographed after its cooling to the room temperature and the sample hardness was measured. Also EDS analysis was performed using scanning microscope. Findings: The test material has been hypoeutectoid steel. These steels represent a groups of alloy steels for quenching and tempering. The microstructure of test 37MnNiMo6-4-3 hypoeutectoid steel on CCT diagram changes depending on the cooling rate. Research limitations/implications: The new hypoeutectoid steel and new CCT diagram. Practical implications: The paper contains a description of one from a group of iron based model alloys with 0.35-0.40% carbon content. According to PN-EN 10027 standard this steel should have a symbol 37MnNiMo6-4-3. Originality/value: The new hypoeutectoid steel (Mn-Ni-Mo iron based model alloy).
Cechy publikacji
original article
peer-reviewed
Inne
System-identifier
idp:074318