Zum Einfluss des Lösungsglühens und Aushärtens auf die Mikrostruktur von ZK40-Legierungen, modifiziert durch Zugaben von Ca, Gd, Nd und Y
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Zum Einfluss des Lösungsglühens und Aushärtens auf die Mikrostruktur von ZK40-Legierungen, modifiziert durch Zugaben von Ca, Gd, Nd und Y. / Buzolin, Ricardo Henrique; Mendis, Chamini Lakshi; Tolnai, Domonkos et al.
In: Praktische Metallographie/Practical Metallography, Vol. 55, No. 5, 05.2018, p. 268-287.Research output: Journal contributions › Journal articles › Research › peer-review
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TY - JOUR
T1 - Zum Einfluss des Lösungsglühens und Aushärtens auf die Mikrostruktur von ZK40-Legierungen, modifiziert durch Zugaben von Ca, Gd, Nd und Y
AU - Buzolin, Ricardo Henrique
AU - Mendis, Chamini Lakshi
AU - Tolnai, Domonkos
AU - Kainer, Karl Ulrich
AU - Hort, Norbert
AU - Pereira Da Silva, Erenilton
AU - Cavalcanti Pinto, Haroldo
PY - 2018/5
Y1 - 2018/5
N2 - As-cast ZK40 alloys, modified with the addition of CaO, Gd, Nd and Y were investigated. Solution heat treatments were performed based on differential thermal analysis results. The unmodified ZK40 alloy exhibited microstructure with nearly no intermetallic compound but with precipitates formed during the solution treatment. The modified ZK40 alloys exhibited a semi-dissolved network of intermetallic compounds along the grain boundaries and zones of intermetallic compounds within the grains. Interestingly, no precipitates were observed immediately next to the grain boundaries. The energy dispersive X-ray spectroscopy line scans showed an enrichment of Zn and Zr in the regions where the precipitates are found, suggesting that they are Zn-Zr precipitates. The ageing behaviour was compared between the as-cast and the solution treated materials and it was found that apart from the ZK40-Gd, ZK40-Nd and ZK40-Y aged at 200 °C after solution treatment, there is no notable ageing response for the investigated alloys.
AB - As-cast ZK40 alloys, modified with the addition of CaO, Gd, Nd and Y were investigated. Solution heat treatments were performed based on differential thermal analysis results. The unmodified ZK40 alloy exhibited microstructure with nearly no intermetallic compound but with precipitates formed during the solution treatment. The modified ZK40 alloys exhibited a semi-dissolved network of intermetallic compounds along the grain boundaries and zones of intermetallic compounds within the grains. Interestingly, no precipitates were observed immediately next to the grain boundaries. The energy dispersive X-ray spectroscopy line scans showed an enrichment of Zn and Zr in the regions where the precipitates are found, suggesting that they are Zn-Zr precipitates. The ageing behaviour was compared between the as-cast and the solution treated materials and it was found that apart from the ZK40-Gd, ZK40-Nd and ZK40-Y aged at 200 °C after solution treatment, there is no notable ageing response for the investigated alloys.
KW - Ingenieurwissenschaften
UR - http://www.scopus.com/inward/record.url?scp=85047269209&partnerID=8YFLogxK
U2 - 10.3139/147.110518
DO - 10.3139/147.110518
M3 - Zeitschriftenaufsätze
AN - SCOPUS:85047269209
VL - 55
SP - 268
EP - 287
JO - Praktische Metallographie/Practical Metallography
JF - Praktische Metallographie/Practical Metallography
SN - 0032-678X
IS - 5
ER -