In-situ synchrotron investigation of the phasesand their morphology-development in Mg-Nd-Zn alloys
Publikation: Beiträge in Zeitschriften › Zeitschriftenaufsätze › Forschung › begutachtet
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in: International Journal of Materials Research, Jahrgang 111, Nr. 1, 01.2020, S. 4-10.
Publikation: Beiträge in Zeitschriften › Zeitschriftenaufsätze › Forschung › begutachtet
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TY - JOUR
T1 - In-situ synchrotron investigation of the phasesand their morphology-development in Mg-Nd-Zn alloys
AU - Tolnai, D.
AU - Sosro, T.
AU - Gavras, S.
AU - Buzolin, R. H.
AU - Hort, Norbert
PY - 2020/1
Y1 - 2020/1
N2 - The addition of Zn to the Mg-Nd system improves the yield strength and creep resistance, however its influence on the intermetallic phases in the ternary system is not yet fully understood. Understanding the sequence of phase-formation and phase-evolution during solidification and processing is essential to microstructure design. The solidification was investigated with in-situ synchrotron radiation-diffraction and tomography during cooling from the molten state to 200°C to investigate the phase-formation and transformation characteristics. The solidification starts with α-Mg followed by two distinct intermetallic phases T2 and T3. The results suggest that Zn stabilizes the Mg3Nd phase and accelerates precipitate formation. The dendritic morphology changes during solidification towards coarser shapes, thus impedes feeding and promotes hot tearing.
AB - The addition of Zn to the Mg-Nd system improves the yield strength and creep resistance, however its influence on the intermetallic phases in the ternary system is not yet fully understood. Understanding the sequence of phase-formation and phase-evolution during solidification and processing is essential to microstructure design. The solidification was investigated with in-situ synchrotron radiation-diffraction and tomography during cooling from the molten state to 200°C to investigate the phase-formation and transformation characteristics. The solidification starts with α-Mg followed by two distinct intermetallic phases T2 and T3. The results suggest that Zn stabilizes the Mg3Nd phase and accelerates precipitate formation. The dendritic morphology changes during solidification towards coarser shapes, thus impedes feeding and promotes hot tearing.
KW - In situ
KW - MgNdZn alloys
KW - Solidification
KW - Synchrotron diffraction
KW - Synchrotron tomography
KW - Engineering
UR - http://www.scopus.com/inward/record.url?scp=85082240090&partnerID=8YFLogxK
U2 - 10.3139/146.111835
DO - 10.3139/146.111835
M3 - Journal articles
AN - SCOPUS:85082240090
VL - 111
SP - 4
EP - 10
JO - International Journal of Materials Research
JF - International Journal of Materials Research
SN - 1862-5282
IS - 1
ER -