In situ-formed, low-cost, Al-Si nanocomposite materials

• Autorzy: Guba P. , Gesing A.J. , Sokolowski J. , Conle A. , Sobiesiak A. , Das S. K.

Identyfikatory

DOI

10.5604/01.3001.0010.7564

• Języki publikacji: EN

Abstrakty

EN

Aluminum-Silicon (Al-Si) alloys are the “bread-and-butter” of the aluminum foundry industry being cast at an annual rate of over 2 million tonnes/year in North America for use mainly in transportation. Coarse microstructure of these alloys limits their specific mechanical properties and consequently their potential for vehicle lightweighting. Purpose: We report on a new family of cast Al-Si alloys producing in-situ formed nanocomposites of up to 25 vol.% ultrafine equiaxed silicon particles in Al alloy matrix which can be ductile, or reinforced by nano-scale spinodal constituents. Design/methodology/approach: The hypereutectic Al-Si-X alloy (A390) was melted, solidified and cooled on the novel High Pressure Die Casting Universal Metallurgical Simulator and Analyser Technology Platform (HPDC UMSA) at specific process parameters. The HPDC cast samples consecutively were solution treated and artificially aged to spheroidize the Si and to dissolve the intermetallics in Al(SS) and to re-precipitate them in the solid state as nano-sized spinodal structures. The heat treatment was performed using the High Temperature UMSA Technology Platform. Findings: The nano scale structure of these new materials gives them significantly improved strength, hardness, and wear resistance while retaining adequate toughness and ductility for applications in the transportation applications. Research limitations/implications: Desired composite nanostructures have been produced and characterized in-situ in small laboratory test samples. Practical implications: These new materials can be produced by conventional casting technologies such as continuous strip casting, or high-pressure die-casting from conventional low-cost Al-Si melts. Originality/value: These materials can be produced with a significantly higher volume fraction of ultrafine Si dispersoids than has been done to date in in-situ formed materials, while retaining and improving the density-specific mechanical properties.

Słowa kluczowe

EN

metallic alloys; in-situ composites; nanomaterials; hypereutectic Al-Si alloys; UMSA

PL

stopy metaliczne; kompozyty in-situ; nanomateriały; stop nadeutektyczny Al-Si; UMSA

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2017
• Tom: Vol. 84, nr 1
• Strony: 5--22
• Opis fizyczny: Bibliogr. 9 poz., rys., tab.

Twórcy

autor

Guba P.

• Department of Mechanical, Automotive & Materials Engineering, University of Windsor, # 2175 CEI, 401, Windsor, ON, N9B 3P4, Canada

autor

Gesing A.J.

• JGesing Consultants Inc., 36 Danville Dr., Toronto, ON, M2P 1J1, Canada

autor

Sokolowski J.

• Department of Mechanical, Automotive & Materials Engineering, University of Windsor, # 2175 CEI, 401, Windsor, ON, N9B 3P4, Canada

autor

Conle A.

• Department of Mechanical, Automotive & Materials Engineering, University of Windsor, # 2175 CEI, 401, Windsor, ON, N9B 3P4, Canada

autor

Sobiesiak A.

• Department of Mechanical, Automotive & Materials Engineering, University of Windsor, # 2175 CEI, 401, Windsor, ON, N9B 3P4, Canada

autor

Das S. K.

• Phinix L.L.C., 7730 Carondelet Ave., Suite 110, Clayton, MO, 63105, USA

Bibliografia

• [1] E. Lee Bray, Aluminum, U.S. Geological Survey Minerals Yearbook, 2015, 5.1-5.18.
• [2] P. Guba, A Gesing, J. Sokołowski, A. Conle, A. Sobiesiak, M. Kasprzak, Combined Thermal, Microstructural and Microchemical Analysis of Solidification of Al. 25Si 3Cu Alloy, Archives of Material Science and Engineering 85/2 (2017) 49-79, doi: 10.5604/01.3001.0010.3428.
• [3] A. Hellawell, The growth and structure of eutectics with silicon and germanium, Progress in Materials Science 15/1 (1970) 3-78, doi: 10.1016/0079-6425(70)90001-0.
• [4] D.C. Jenkinson, L.M. Hogan, The modification of aluminium-silicon alloys with strontium, Journal of Crystal Growth 28/2 (1975) 171-187, doi: 10.1016/0022-0248(75)90233-X.
• [5] J. Eiken, M. Apel, S-M. Liang, R. Schmid-Fetzer, Impact of P and Sr on solidification sequence and morphology of hypoeutectic Al-Si alloys: Combined thermodynamic computation and phase-field simulation, Acta Materialia 98 (2015) 152-163, doi: 10.1016/j.actamat.2015.06.056.
• [6] I. Häusler, C. Schwarze, M. Bilal, D. Ramirez, W. Hetaba, R. Kamachali, B. Skrotzki, Precipitation of T1 and θ’ Phase in Al-4Cu-1Li-0.25Mn During Age Hardening: Microstructural Investigation and Phase-Field Simulation, Materials (Basel) 10/2 (2017) 28, pii: E117. doi: 10.3390/ma10020117.
• [7] R. Khorshidi, A. Honarbakhsh Raouf, J. Campbell, The Study of Li effect on the microstructure and tensile properties of cast Al-Mg2Si metal matrix composite, Journal of Alloys and Compounds 509 (2011) 9026-9033, doi: 10.1016/j.jallcom.2011.07.012.
• [8] P. Guba, Development of Novel Nano – Single Si Phase Cast Hypereutectic Al-Si Alloys, PhD Dissertation, The University of Windsor, Windsor, Ontario, Canada, 2015.
• [9] M. Khurshed-Ul Alam, Thermal and Microstructural Analysis of the A356 Alloy Subjected to High Pressure in the Squeeze Casting (SC) UMSA Technology Platform, MASc Thesis, The University of Windsor, Windsor, Ontario, Canada, 2014.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).