Forming Behaviour at Elevated Temperature of a Laser Heat-Treated AZ31 Magnesium Alloy Sheet

Donato Sorgente; Gianfranco Palumbo; Alessandro Fortunato; Alessandro Ascari; Ali Arslan Kaya

doi:10.4028/www.scientific.net/MSF.941.1270

Paper Titles

Study of Mechanical Degradation and Microstructural Characterization in a Ni-Based Superalloy Component of a Gas Turbine
p.1248

Development of Low-Cost Titanium-Manganese Shape Memory Alloys
p.1254

Fabrication of the Beta-Titanium Alloy Rods from a Mixture of Pure Metallic Element Powders via Selected Laser Melting
p.1260

From Pre-Alloyed Rod to Gas-Atomized Powder and SPS Sintered Samples: How the Microstructure of an Nb Silicide Based Alloy Evolves
p.1264

Forming Behaviour at Elevated Temperature of a Laser Heat-Treated AZ31 Magnesium Alloy Sheet
p.1270

Ultra-Fine Grained Ti-15Mo Alloy Prepared by Powder Metallurgy
p.1276

The Influence of Alloy Composition and Heat-Treatments on the Shape Memory Properties in a Cu-Sn-X Alloy
p.1282

Residual Stress Analysis of A362 Aluminum Alloy Gear Case Using Neutron Diffraction
p.1288

Behavior of Hydrogen in Tensile-Deformed Aluminum Alloys
p.1295

HomeMaterials Science ForumMaterials Science Forum Vol. 941Forming Behaviour at Elevated Temperature of a...

Forming Behaviour at Elevated Temperature of a Laser Heat-Treated AZ31 Magnesium Alloy Sheet

Abstract:

The tailoring of mechanical and technological properties of the initial material in sheet metal forming has been widely investigated and successfully applied. The benefits of such an approach can be found in the improvement of both the post-forming performances of the manufactured component and the forming process capabilities. Different strategies can be found and most of them involve a microstructural alteration by a selective heat source (e.g. laser, induction, UV light). The use of aluminium alloys combined with these strategies has been extensively investigated, while magnesium alloys are almost not yet considered from this viewpoint. In this work, we investigated the effect of a selective laser heat treatment on an AZ31 magnesium alloy sheet. After laser heat treating a single track in the centre of a blank with different heat input values, bulge tests at elevated temperatures were conducted. The dome height evolution was continuously acquired during the tests and differences between the untreated specimen and the laser treated ones have been characterized. The effect of the laser treatment was evaluated also in terms of thickness distribution of the formed specimens. A thickness discontinuity was found along the treated specimens in the transition zone between the treated and the untreated material. Results highlighted that an effective change in the forming behaviour can be induced in the treated zone depending on the laser heat input. It has thus been shown that this approach can be employed for tailoring the magnesium alloy blank properties prior to the gas forming at elevated temperatures.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Materials Science Forum (Volume 941)

Pages:

1270-1275

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.941.1270

Citation:

Cite this paper

Online since:

December 2018

Authors:

Donato Sorgente*, Gianfranco Palumbo, Alessandro Fortunato, Alessandro Ascari, Ali Arslan Kaya

Keywords:

Forming, Heat Treatment, Laser, Magnesium

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

* - Corresponding Author

References

[1] W.J. Joost, P.E. Krajewski, Towards magnesium alloys for high-volume automotive applications, Scr. Mater. 128 (2017) 107–112.

DOI: 10.1016/j.scriptamat.2016.07.035

Google Scholar

[2] R. Neugebauer, T. Altan, M. Geiger, M. Kleiner, a. Sterzing, Sheet metal forming at elevated temperatures, CIRP Ann. - Manuf. Technol. 55 (2006) 793–816.

DOI: 10.1016/j.cirp.2006.10.008

Google Scholar

[3] M.K. Kulekci, Magnesium and its alloys applications in automotive industry, Int. J. Adv. Manuf. Technol. 39 (2008) 851–865.

DOI: 10.1007/s00170-007-1279-2

Google Scholar

[4] A.A. Kaya, D. Eren, D. Turan, D. Sorgente, G. Palumbo, Evolution of Microstructure and Texture in AZ31 Alloy Subjected to Gas Forming, JOM. 69 (2017) 1041–1045.

DOI: 10.1007/s11837-017-2350-6

Google Scholar

[5] W.J. Kim, S.W. Chung, C.S. Chung, D. Kum, Superplasticity in thin magnesium alloy sheets and deformation mechanism maps for magnesium alloys at elevated temperatures, Acta Mater. 49 (2001) 3337–3345.

DOI: 10.1016/s1359-6454(01)00008-8

Google Scholar

[6] Y. Lee, J.J. Kim, Y.N. Kwon, E.Y. Yoon, Formability and grain size of AZ31 sheet in gas blow forming process, in: Procedia Eng., Elsevier, 2014: p.748–753.

DOI: 10.1016/j.proeng.2014.10.071

Google Scholar

[7] M. Geiger, M. Merklein, U. Vogt, Aluminum tailored heat treated blanks, Prod. Eng. 3 (2009) 401–410.

DOI: 10.1007/s11740-009-0179-8

Google Scholar

[8] S. Rhaipu, The effect of microstructural gradients on superplastic forming of Ti--6Al--4V, J. Mater. Process. Technol. 80–81 (1998) 90–95.

DOI: 10.1016/s0924-0136(98)00179-4

Google Scholar

[9] M.K. M. Cusick, F. Abu-Farha, P. Lours, Y. Maoult, G. Bernhart, TOWARDS SUPERPLASTIC FORMING OF AZ31 MAGNESIUM ALLOY WITH CONTROLLED MICROSTRUCTURE, in: 6th EUROSPF Conf., (2008).

DOI: 10.1002/mawe.201200035

Google Scholar

[10] X. Cao, M. Jahazi, J.P. Immarigeon, W. Wallace, A review of laser welding techniques for magnesium alloys, J. Mater. Process. Technol. 171 (2006) 188–204.

DOI: 10.1016/j.jmatprotec.2005.06.068

Google Scholar

[11] L.D. Scintilla, L. Tricarico, Experimental investigation on fiber and CO2inert gas fusion cutting of AZ31 magnesium alloy sheets, Opt. Laser Technol. 46 (2013) 42–52.

DOI: 10.1016/j.optlastec.2012.04.026

Google Scholar

[12] H.Y. Zheng, Y.C. Guan, X.C. Wang, Z.K. Wang, Tailoring material properties induced by laser surface processing, Elsevier Ltd., 2015.

Google Scholar

[13] D. Sorgente, G. Palumbo, L.D. Scintilla, L. Tricarico, Gas forming of an AZ31 magnesium alloy at elevated strain rates, Int. J. Adv. Manuf. Technol. 83 (2016).

DOI: 10.1007/s00170-015-7614-0

Google Scholar

[14] F.S. Jarrar, M. Liewald, P. Schmid, A. Fortanier, Superplastic Forming of Triangular Channels with Sharp Radii, J. Mater. Eng. Perform. 23 (2014) 1313–1320.

DOI: 10.1007/s11665-014-0878-y

Google Scholar