Determination of material quality by methods of thermal analysis Cover

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Determination of material quality by methods of thermal analysis

Materials and Geoenvironment

Volume 68 (2021): Issue 1 (March 2021)

By: Maja Vončina, Gregor Hvala, Jožef Medved, Borut Žužek and Mitja Petrič

Open Access

|Nov 2022

Figures & Tables

(a) Steel mould with a square profile; (b) Casting obtained from the steel mould for tensile specimens.

The Scheil cooling curve of the non-equilibrium solidification of (a) sample 239 and (b) sample 239D.

The cooling curve and corresponding derivative of (a) sample 239 and (b) sample 239D.

Heating (green) and cooling (blue) DSC curve of the sample (a) 239 and (b) 239D.

Micrographs of (a and b) sample 239 and (c and d) sample 239D.

Micrographs of sample 239 in (a) as-cast state and (b) T6 heat-treated state and of sample 239D (c) in as-cast state and (d) T6 heat-treated state.

Hardness of AlSi10Mg alloy and AlSi10Mg(Fe) alloy in as-cast state and after heat treatment.

Tensile test results for 239 alloys and 239D alloys in the as-cast state and after heat treatment.

The proportions of phase formed during the solidification_

Phase / Sample	239	239D
α-Al	87.00	85.20
β-Si (eutectic)	9.91	9.74
α-Al₁₅(Fe,Mn)₃Si₂	0.89	1.03
β-Al₅FeSi	1.31	3.26
Mg₂Si	0.86	0.65
Q-Al₅Cu₂Mg₈Si₆	0.02	0.11

Chemical composition of the alloys investigated in % by weight_

Sample	Si	Fe	Cu	Mn	Mg	Ni
239	10.398	0.3548	0.005	0.2654	0.5513	0.0038
239D	10.439	0.8788	0.0229	0.3092	0.4459	0.0062
Sample	Zn	Pb	Sn	Ti	Sr	Al	Mn:Fe
239	0.0039	0.001	0.0003	0.0983	0.0369	rest	0.748
239D	0.0167	0.001	0.0004	0.0253	0.0015	rest	0.352

DOI: https://doi.org/10.2478/rmzmag-2021-0006 | Journal eISSN: 1854-7400

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Language: English

Page range: 41 - 49

Submitted on: Oct 21, 2021

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Accepted on: Nov 26, 2021

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Published on: Nov 7, 2022

Published by: Sciendo

In partnership with: Paradigm Publishing Services

Publication frequency: 4 issues per year

Keywords:

casting alloys,

thermal analysis,

solidification,

microstructure,

mechanical properties

Related subjects:

Computer sciences,

Databases and data mining,

Geology and mineralogy,

Materials sciences,

Materials characterization and properties

© 2022 Maja Vončina, Gregor Hvala, Jožef Medved, Borut Žužek, Mitja Petrič, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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