Thermo-mechanical Fatigue Behaviour of AlSi7Mg Alloy Processed by Selective Laser Melting

Zahra Sajedi, Riccardo Casati, M. C. Poletti, Mateusz Skalon, Christoph Sommitsch, Maurizio Vedani

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Abstract

Heat treatable hypo-eutectic AlSi7Mg (A357) alloy is widely used for lightweight structural parts and for high temperature applications such as in cast cylinder heads.
AlSi7Mg is also a suitable alloy to be processed by selective laser melting (SLM), owing to its narrow solidification range, resistance to hot cracking and good fluidity. Employing SLM-processed parts made by AlSi7Mg in high temperature applications with cyclic thermal loads requires good resistance to thermo-mechanical fatigue due to the critical strains and stresses induced by the fluctuating temperature. In this study, the thermo-mechanical fatigue behaviour of A357 alloy samples produced by SLM has been investigated using a Gleeble®3800 simulator. A correlation has been found between the applied mechanical stress and thermo-mechanical fatigue life. Analyses on the mechanisms of failure allowed to draw conclusions about the relation between the thermo-mechanical fatigue strength and peculiar microstructure formed by SLM-processing.
Original languageEnglish
Title of host publicationEuro PM2019 - Congress and Exhibition
PublisherEuropean Powder Metallurgy Association
Publication statusSubmitted - Oct 2019
EventEuro PM2019 - Congress and Exhibition - Maastricht , Netherlands
Duration: 13 Oct 201916 Oct 2019
https://www.europm2019.com/

Conference

ConferenceEuro PM2019 - Congress and Exhibition
CountryNetherlands
CityMaastricht
Period13/10/1916/10/19
Internet address

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Melting
Fatigue of materials
High temperature applications
Lasers
Cylinder heads
Fluidity
Thermal load
Eutectics
Solidification
Simulators
Microstructure
Processing
Temperature

Cite this

Sajedi, Z., Casati, R., Poletti, M. C., Skalon, M., Sommitsch, C., & Vedani, M. (2019). Thermo-mechanical Fatigue Behaviour of AlSi7Mg Alloy Processed by Selective Laser Melting. Manuscript submitted for publication. In Euro PM2019 - Congress and Exhibition European Powder Metallurgy Association.

Thermo-mechanical Fatigue Behaviour of AlSi7Mg Alloy Processed by Selective Laser Melting. / Sajedi, Zahra; Casati, Riccardo ; Poletti, M. C.; Skalon, Mateusz; Sommitsch, Christoph; Vedani, Maurizio.

Euro PM2019 - Congress and Exhibition. European Powder Metallurgy Association, 2019.

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Sajedi, Z, Casati, R, Poletti, MC, Skalon, M, Sommitsch, C & Vedani, M 2019, Thermo-mechanical Fatigue Behaviour of AlSi7Mg Alloy Processed by Selective Laser Melting. in Euro PM2019 - Congress and Exhibition. European Powder Metallurgy Association, Euro PM2019 - Congress and Exhibition, Maastricht , Netherlands, 13/10/19.
Sajedi Z, Casati R, Poletti MC, Skalon M, Sommitsch C, Vedani M. Thermo-mechanical Fatigue Behaviour of AlSi7Mg Alloy Processed by Selective Laser Melting. In Euro PM2019 - Congress and Exhibition. European Powder Metallurgy Association. 2019
Sajedi, Zahra ; Casati, Riccardo ; Poletti, M. C. ; Skalon, Mateusz ; Sommitsch, Christoph ; Vedani, Maurizio. / Thermo-mechanical Fatigue Behaviour of AlSi7Mg Alloy Processed by Selective Laser Melting. Euro PM2019 - Congress and Exhibition. European Powder Metallurgy Association, 2019.
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