Google Scholar

We have 16 guests online
Ulti Clocks content


УДК 621.91.01:543.1


Viktorie Weiss, Ph.D., Ingrid Kvapilova
University J. E. Purkyně, Ústí nad Labem, Czech Republic


ASSESSMENT OF THE EFFECT OF TEMPERATURE AND ANNEALING TIME HOMOGENIZATION AlCu4MgMn ALLOYS IN TERMS OF MICROSTRUCTURE IMAGE ANALYSIS METHODS AND EDX


Виктория Вайс, к.т.н., Ингрид Квапилова
Университет J.E. Purkyně, Усти-над-Лабем, Чешская республика


ОЦЕНКА ВЛИЯНИЯ ТЕМПЕРАТУРЫ И ВРЕМЕНИ ГОМОНИЗАЦИИ ОТЖИГА СПЛАВОВ AlCu4MgMn С ТОЧКИ ЗРЕНИЯ МЕТОДА АНАЛИЗА ИЗОБРАЖЕНИЯ МИКРОСТРУКТУР И EDX АНАЛИЗА

 

Abstract. Homogenization is defined as a method of heat treatment, which consists of holding time at high temperature near the liquidus (approx. 0.7 to 0.8 the melting temperature) to eliminate chemical inhomogeneity diffusion processes. Cause of segregation is selective crystal solidification in the gradual change in composition of the solid phase. Melt began to appear after certain of the hypothermia during cooling, and the growth of germs in accordance with the general laws of crystallization. Each rigid layer has a different chemical composition. The first part of the solid phase ingredient low concentration of the element last, on the contrary, very high. Susceptibility to crystal alloy segregation is greater, the greater the temperature interval solidification of alloys and the horizontal distance between the liquidus and solidus lines. Crystal segregation will also increase with increasing content of alloying elements, which in these experimental alloys occurs as containing 6-9% alloying elements. Crystal segregation can be removed by diffusion, for which it is necessary to create conditions by homogenization annealing.
Keywords: homogenization annealing, AlCu4MgMn alloy, crystal segregation, energy dispersive X-ray analysis (EDX), image analysis

 

REFERENCES
1. GRÍGEROVÁ,T., LUKAČ, I., KOŘENÝ, R. (1988). Zlievárenstvo neželezných kovov, Praha, 1988, 063-566-88.
2. MICHNA, Š.- LUKÁČ, I., LOUDA, P., Očenášek a kol. (2005). Aluminium materials and technologies from A to Z, Adin s.r.o, ISBN 978-80-89244-18-8.
3. LUKAČ, I., MICHNA, Š. (2001). Colour kontrast, strukcture and defects in aluminium and aluminium alloys, Cambridge International Science Publishing, ISBN 18-983-26-70-3.
4. MICHNA, Š.,NOVÁ, I.(2008). Technologie a zpracování kovových materiálu, Adin, s.r.o., Prešov, ISBN 978-80-89244-38-6.
5. VAJSOVÁ, V. (2011). Optimization of homogenizing annealing for Al-Zn5,5-Mg2,5-Cu1,5 alloy, Metallurgist, Volume 54, Issue 9, 2011, ISSN 0026 – 0894
6. VAJSOVÁ, V., MICHNA, Š. (2010). Optimization of AlZn5.5Mg2.5Cu1.5, Alloy Homogenizing Annealing, Metallofizika i noveishie tekhnologii, Volume 32, No.7, ISSN 1024 - 1809 7. VAJSOVÁ, V. (2009). Structural inhomogeneity by Al - Cu alloys casting into metal and bentonic form. Transactions of the Universities of Košice, ISSN 1335 – 2334
8. VAJSOVÁ, V. (2010). Homogenizační žíhaní slitiny AlCu4MgMn, Strojírenská technologie, ročník XIV, ISSN 1211 – 4162
9. VAJSOVA, V. (2010). Vliv formy pro odlévání na strukturu slitiny AlCu4MgMn, Slévárenství, 7 - 8/2010, ISNN 0037 – 6825
10. WEISS, V., MICHNA, Š., STŘIHAVKOVA, E. (2010). Využití barevné metalografie při identifikaci krystalové krystalové a pásmové segregace u hliníkových slitin, Metalografie, metody a postupy, 2010, ISBN 978 – 80 – 89244 – 74 – 4
11. STŘIHAVKOVA, E., MICHNA, Š., WEISS, V. (2010). Úloha barevné metalografie při identifikaci struktury hliníkových slitin, Metalografie, metody a postupy, ISBN 978 – 80 – 89244 – 74 – 4
12. VAJSOVÁ, V, MICHNA, Š, STŘIHAVKOVA, E. (2010). Analysis of the parameters which influence diffusion processes in the course of homogeneous annealing of aluminium alkou doped zinc, Toyotarity. Structure of kontrol elements
importace,Yurii V. Makovetsky, Dnipropetrovsk, ISBN 978 – 966 – 1507 –40-0
13. VAJSOVÁ, V. (2009). Vliv formy pro odlévání na strukturu slitiny AlCu4MgMn, Transactions of the Universities of Košice, 4/2009, ISSN 1335 – 2334
14. WEISS, V. (2011). Vliv formy k odlévaní na kvalitu povrchu a strukturu slitiny AlZn5,5Mg2,5Cu1,5, Slévárenství, LXI, 7 - 8/2011, červenec – srpen 2011, ISSN 0037 - 6825 

15. WEISS, V., STŘIHAVKOVÁ, E. (2011). Optimalizace homogenizačního žíhaní slitiny AlCu4MgMn, Strojírenská
technologie ročník XVI, 10/2011, ISSN 1211 – 4162

.pdf