Hostname: page-component-cd9895bd7-gbm5v Total loading time: 0 Render date: 2024-12-27T13:10:35.024Z Has data issue: false hasContentIssue false
  • English
  • Français

Evolution of microstructure and elevated-temperature properties with Mn addition in Al–Mn–Mg alloys

Published online by Cambridge University Press:  22 June 2017

Kun Liu  and
X-Grant Chen
Kun Liu*
Affiliation:
Department of Applied Science, University of Quebec at Chicoutimi, Saguenay, QC G7H 2B1, Canada
X-Grant Chen
Affiliation:
Department of Applied Science, University of Quebec at Chicoutimi, Saguenay, QC G7H 2B1, Canada
*
a)Address all correspondence to this author. e-mail: kun.liu@uqac.ca
Get access

Abstract

In the present work, various Mn amounts (up to 2 wt%) have been added into Al–Mn–Mg 3004 alloy to study their effect on the evolution of microstructure and elevated-temperature properties. Results showed that the dominant intermetallics are interdendritical Al6(MnFe) until to 1.5 wt% Mn. With further addition of Mn to 2 wt%, the blocky primary Al6Mn/Al6(MnFe) and high volume of fine Al6(MnFe) intermetallics form in the matrix, leading to the rapid increase on the volume fraction of intermetallics. After the precipitation heat treatment (375 °C/48 h), the precipitation of dispersoids increased with increasing Mn contents and reached the peak condition in the alloy with 1.5 wt% Mn, resulting in the highest yield strength and creep resistance at 300 °C. However, the elevated-temperature properties became worse in the alloy with 2 wt% Mn due to the lowest volume fraction of dispersoids and highest volume of dispersoid free zone.

Keywords

Al–Mn–Mg 3004 alloydispersoidsMn contentselevated-temperature properties
Type
Articles
Information
Journal of Materials Research , Volume 32 , Issue 13 , 14 July 2017 , pp. 2585 - 2593
Check for updates
Copyright
Copyright © Materials Research Society 2017 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Footnotes

Contributing Editor: Jürgen Eckert

References

REFERENCES

Li, Y.J., Muggerud, A.M.F., Olsen, A., and Furu, T.: Precipitation of partially coherent α-Al(Mn,Fe)Si dispersoids and their strengthening effect in AA 3003 alloy. Acta Mater. 60, 1004 (2012).CrossRefGoogle Scholar
Liu, K. and Chen, X.G.: Development of Al–Mn–Mg 3004 alloy for applications at elevated temperature via dispersoid strengthening. Mater. Des. 84, 340 (2015).Google Scholar
Liu, K. and Chen, X.G.: Evolution of intermetallics, dispersoids, and elevated temperature properties at various Fe contents in Al–Mn–Mg 3004 alloys. Metall. Mater. Trans. B 47B, 3291 (2015).Google Scholar
Li, Y.J. and Arnberg, L.: Quantitative study on the precipitation behavior of dispersoids in DC-cast AA3003 alloy during heating and homogenization. Acta Mater. 51, 3415 (2003).Google Scholar
Muggerud, A.M.F., Mørtsell, E.A., Li, Y., and Holmestad, R.: Dispersoid strengthening in AA3xxx alloys with varying Mn and Si content during annealing at low temperatures. Mater. Sci. Eng., A 567, 21 (2013).CrossRefGoogle Scholar
Liu, K., Ma, H., and Chen, X.G.: Enhanced elevated-temperature properties via Mo addition in Al–Mn–Mg 3004 alloy. J. Alloys Compd. 694, 354 (2017).CrossRefGoogle Scholar
Liu, K., Nabawy, A.M., and Chen, X-G.: Influence of TiB2 nanoparticles on the elevated-temperature properties of Al–Mn–Mg 3004 alloy. Trans. Nonferrous Met. Soc. China 27, 771 (2017).CrossRefGoogle Scholar
Kaufman, J.G.: Properties of Aluminum Alloys: Tensile, Creep, and Fatigue Data at High and Low Temperatures (ASM International; Aluminum Association, Materials Park, Ohio; Washington, D.C., 1999); pp. 16–93, 162–232.Google Scholar
Li, Y.J. and Arnberg, L.: Evolution of eutectic intermetallic particles in DC-cast AA3003 alloy during heating and homogenization. Mater. Sci. Eng., A 347, 130 (2003).Google Scholar
Muggerud, A.M.F., Li, Y., and Holmestad, R.: Composition and orientation relationships of constituent particles in 3xxx aluminum alloys. Philos. Mag. 94, 556 (2014).CrossRefGoogle Scholar
Shukla, A. and Pelton, A.D.: Thermodynamic assessment of the Al–Mn and Mg–Al–Mn systems. J. Phase Equilib. Diffus. 30, 28 (2009).CrossRefGoogle Scholar
Liu, X.J., Ohnuma, I., Kainuma, R., and Ishida, K.: Thermodynamic assessment of the aluminum–manganese (Al–Mn) binary phase diagram. J. Phase Equilib. 20, 45 (1999).Google Scholar
Mohammadtaheri, M.: A new metallographic technique for revealing grain boundaries in aluminum alloys. Metallogr., Microstruct., Anal. 1, 224 (2012).Google Scholar
Liu, P.X., Liu, Y., and Xu, R.: Microstructure quantitative analysis of directionally solidified Al–Ni–Y ternary eutectic alloy. Trans. Nonferrous Met. Soc. China 24, 2443 (2014).Google Scholar
Weibel, E.R. and Elias, H.: Quantitative Methods in Morphology (Springer-Verlag, Berlin, New York, 1967); pp. 89–98.Google Scholar
Bahadur, A.: Intermetallic phases in Al–Mn alloys. J. Mater. Sci. 23, 48 (1988).Google Scholar
Kang, H., Li, X., Su, Y., Liu, D., Guo, J., and Fu, H.: 3-D morphology and growth mechanism of primary Al6Mn intermetallic compound in directionally solidified Al–3 at.% Mn alloy. Intermetallics 23, 32 (2012).CrossRefGoogle Scholar
Liu, Y., Huang, G., Sun, Y., Zhang, L., Huang, Z., Wang, J., and Liu, C.: Effect of Mn and Fe on the formation of Fe- and Mn-rich intermetallics in Al–5Mg–Mn alloys solidified under near-rapid cooling. Materials 9, 88 (2016).CrossRefGoogle ScholarPubMed
Zhao, Q., Holmedal, B., and Li, Y.: Influence of dispersoids on microstructure evolution and work hardening of aluminium alloys during tension and cold rolling. Philos. Mag. 93, 2995 (2013).CrossRefGoogle Scholar
Es-Said, O.S., Zeihen, A., Ruprich, M., Quattrocchi, J., Thomas, M., Shin, K.H., O’Brien, M., Johansen, D., Tijoe, W.H., and Ruhl, D.: Effect of processing parameters on the earing and mechanical properties of strip cast type 3004 Al alloy. J. Mater. Eng. Perform. 3, 123 (1994).Google Scholar
Arzt, E.: Creep of dispersion strengthened materials: A critical assessment. Res Mech. 31, 399 (1991).Google Scholar
Knipling, K.E., Dunand, D.C., and Seidman, D.N.: Criteria for developing castable, creep-resistant aluminum-based alloys—A review. Z. Metallkd. 97, 246 (2006).CrossRefGoogle Scholar
Dieter, G.E.: Mechanical Metallurgy (McGraw-Hill, New York, 1986); pp. 449–450.Google Scholar
Karnesky, R.A., Meng, L., and Dunand, D.C.: Strengthening mechanisms in aluminum containing coherent Al3Sc precipitates and incoherent Al2O3 dispersoids. Acta Mater. 55, 1299 (2007).CrossRefGoogle Scholar