Effect of mischmetal additions and solution heat treatments (T4) on the microstructure and mechanical properties of thixocast ZK60-RE magnesium alloys

Erenilton Pereira da Silva; Ricardo Henrique Buzolin; Bruna Callegari; Fernando Warchomicka; Guillermo C. Requena; Haroldo Cavalcanti Pinto

doi:10.4028/www.scientific.net/MSF.879.2300

Effect of mischmetal additions and solution heat treatments (T4) on the microstructure and mechanical properties of thixocast ZK60-RE magnesium alloys

Erenilton Pereira da Silva, Ricardo Henrique Buzolin, Bruna Callegari, Fernando Warchomicka, Guillermo C. Requena, Haroldo Cavalcanti Pinto

Graz University of Technology (90000)

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Abstract

Solution treatments (T4) at 380 °C for 16 h and 500 °C for 8 h were performed for ZK60 magnesium alloys modified with addition of 0.5, 1.5 and 2.5 wt% of mischmetal (combination of rare-earth (RE) elements). The compression behaviour was investigated at room temperature and at 300 °C correlated with the microstructure and differential scanning calorimetry (DSC) data. The ascast microstructure is formed by -Mg matrix with globular grains reinforced by a semi continuous network of Mg-Zn, Mg-Zn-RE and Mg-RE intermetallic particles. Solution-treated alloys show lower yield strengths due to partial dissolution of precipitates. Work hardening was not observed for the alloys compressed at 300°C with the compression speed of 10^-3 s^-1, whereas it was observed for the compression speed of 10^-2 s^-1 for the all as-cast, ZK60-1.5RE-T4 at 380 °C and ZK60-1.5RE-T4 at 380 °C.

Original language	English
Title of host publication	THERMEC 2016
Publisher	Trans Tech Publications Ltd.
Pages	2300-2305
Number of pages	6
ISBN (Print)	9783035711295
DOIs	https://doi.org/10.4028/www.scientific.net/MSF.879.2300
Publication status	Published - 1 Jan 2017
Event	9th International Conference on Processing and Manufacturing of Advanced Materials: Thermec 2016 - Stadthalle Graz, Graz, Austria Duration: 29 May 2016 → 3 Jun 2016 https://www.tugraz.at/events/thermec-2016/home/

Publication series

Name	Materials Science Forum
Volume	879
ISSN (Print)	0255-5476

Conference

Conference	9th International Conference on Processing and Manufacturing of Advanced Materials
Abbreviated title	THERMEC 2016
Country/Territory	Austria
City	Graz
Period	29/05/16 → 3/06/16
Internet address	https://www.tugraz.at/events/thermec-2016/home/

Keywords

Casting
Magnesium
Mischmetal
Rare earths
Semi-Solid

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.4028/www.scientific.net/MSF.879.2300

Cite this

da Silva, E. P., Buzolin, R. H., Callegari, B., Warchomicka, F., Requena, G. C., & Pinto, H. C. (2017). Effect of mischmetal additions and solution heat treatments (T4) on the microstructure and mechanical properties of thixocast ZK60-RE magnesium alloys. In THERMEC 2016 (pp. 2300-2305). (Materials Science Forum; Vol. 879). Trans Tech Publications Ltd.. https://doi.org/10.4028/www.scientific.net/MSF.879.2300

Effect of mischmetal additions and solution heat treatments (T4) on the microstructure and mechanical properties of thixocast ZK60-RE magnesium alloys. / da Silva, Erenilton Pereira; Buzolin, Ricardo Henrique; Callegari, Bruna; Warchomicka, Fernando; Requena, Guillermo C.; Pinto, Haroldo Cavalcanti.

THERMEC 2016. Trans Tech Publications Ltd., 2017. p. 2300-2305 (Materials Science Forum; Vol. 879).

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

da Silva, EP, Buzolin, RH, Callegari, B, Warchomicka, F, Requena, GC & Pinto, HC 2017, Effect of mischmetal additions and solution heat treatments (T4) on the microstructure and mechanical properties of thixocast ZK60-RE magnesium alloys. in THERMEC 2016. Materials Science Forum, vol. 879, Trans Tech Publications Ltd., pp. 2300-2305, 9th International Conference on Processing and Manufacturing of Advanced Materials, Graz, Austria, 29/05/16. https://doi.org/10.4028/www.scientific.net/MSF.879.2300

da Silva EP, Buzolin RH, Callegari B, Warchomicka F, Requena GC, Pinto HC. Effect of mischmetal additions and solution heat treatments (T4) on the microstructure and mechanical properties of thixocast ZK60-RE magnesium alloys. In THERMEC 2016. Trans Tech Publications Ltd. 2017. p. 2300-2305. (Materials Science Forum). https://doi.org/10.4028/www.scientific.net/MSF.879.2300

da Silva, Erenilton Pereira ; Buzolin, Ricardo Henrique ; Callegari, Bruna ; Warchomicka, Fernando ; Requena, Guillermo C. ; Pinto, Haroldo Cavalcanti. / Effect of mischmetal additions and solution heat treatments (T4) on the microstructure and mechanical properties of thixocast ZK60-RE magnesium alloys. THERMEC 2016. Trans Tech Publications Ltd., 2017. pp. 2300-2305 (Materials Science Forum).

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Effect of mischmetal additions and solution heat treatments (T4) on the microstructure and mechanical properties of thixocast ZK60-RE magnesium alloys

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