Next Article in Journal
Influence of Scandium Addition on Stress Corrosion Cracking Susceptibility of Al-Zn-Mg Alloy in Different Corrosive Environments
Next Article in Special Issue
Effect of Microstructures on Working Properties of Nickel-Manganese-Copper Cast Iron
Previous Article in Journal
Effect of Cold Rolling on the Mechanical Properties and Formability of FSWed Sheets in AA5754-H114
Previous Article in Special Issue
Compound Formation and Microstructure of As-Cast High Entropy Aluminums
Article

Room Temperature Mechanical Properties of A356 Alloy with Ni Additions from 0.5 Wt to 2 Wt %

1
Department of Engineering, University of Ferrara, Via G. Saragat 1, I-44122 Ferrara, Italy
2
Department of Engineering and Architecture, University of Parma, Viale G. Usberti 18/A, I-43124 Parma, Italy
3
Brembo SpA, Via G. M. Scotti 66, I-24030 Mapello (BG), Italy
4
Department of Materials Science and Engineering, Norwegian University of Science and Technology, Alfred Getz vei 2 B, N-7491 Trondheim, Norway
*
Author to whom correspondence should be addressed.
Metals 2018, 8(4), 224; https://doi.org/10.3390/met8040224
Received: 6 February 2018 / Revised: 6 March 2018 / Accepted: 26 March 2018 / Published: 29 March 2018
(This article belongs to the Special Issue Microstructure and Mechanical Properties of Casting Alloys)
In recent years, the influence of Ni on high-temperature mechanical properties of casting Al alloys has been extensively examined in the literature. In the present study, room temperature mechanical properties of an A356 alloy with Ni additions from 0.5 to 2 wt % were investigated. The role of Ni-based compounds and eutectic Si particles in reinforcing the Al matrix was studied with image analysis and was then related to tensile properties and microhardness. In the as-cast condition, the formation of the 3D network is not sufficient to determine an increase of mechanical properties of the alloys since fracture propagates by cleavage through eutectic Si particles and Ni aluminides or by the debonding of brittle phases from the aluminum matrix. After T6 heat treatment the increasing amount of Ni aluminides, due to further addition of Ni to the alloy, together with their brittle behavior, leads to a decrease of yield strength, ultimate tensile strength, and Vickers microhardness. Despite the fact that Ni addition up to 2 wt % hinders spheroidization of eutectic Si particles during T6 heat treatment, it also promotes the formation of a higher number of brittle Ni-based compounds that easily promote fracture propagation. View Full-Text
Keywords: casting al alloys; Ni addition; room temperature mechanical properties; microstructure casting al alloys; Ni addition; room temperature mechanical properties; microstructure
Show Figures

Figure 1

MDPI and ACS Style

Lattanzi, L.; Di Giovanni, M.T.; Giovagnoli, M.; Fortini, A.; Merlin, M.; Casari, D.; Di Sabatino, M.; Cerri, E.; Garagnani, G.L. Room Temperature Mechanical Properties of A356 Alloy with Ni Additions from 0.5 Wt to 2 Wt %. Metals 2018, 8, 224. https://doi.org/10.3390/met8040224

AMA Style

Lattanzi L, Di Giovanni MT, Giovagnoli M, Fortini A, Merlin M, Casari D, Di Sabatino M, Cerri E, Garagnani GL. Room Temperature Mechanical Properties of A356 Alloy with Ni Additions from 0.5 Wt to 2 Wt %. Metals. 2018; 8(4):224. https://doi.org/10.3390/met8040224

Chicago/Turabian Style

Lattanzi, Lucia, Maria T. Di Giovanni, Maverick Giovagnoli, Annalisa Fortini, Mattia Merlin, Daniele Casari, Marisa Di Sabatino, Emanuela Cerri, and Gian L. Garagnani 2018. "Room Temperature Mechanical Properties of A356 Alloy with Ni Additions from 0.5 Wt to 2 Wt %" Metals 8, no. 4: 224. https://doi.org/10.3390/met8040224

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop