Authors:
Benjamin Delignon (Gränges Powder Metallurgy, France)
Hans-Wolfgang Seeliger (Gränges Powder Metallurgy, Germany)
Thomas Dickmann (Gränges Powder Metallurgy, Germany)
Robert Plesa (Gränges Powder Metallurgy, France)
Abstract:
AlSi alloys are used for lightweight applications requiring high stiffness and low CTE, sometimes in combination with high mechanical properties or wear resistance. Even though these applications are becoming more and more common in the semiconductor and automotive industries, AlSi alloys are crack prone materials, which limits their wider democratisation. In this work we developed three different processing solutions for the production of several AlSi alloys:The production of large size components of AlSi40 by HIP process.The development of LPBF printing parameters for AlSi35 and AlSi25Cu4Mg, targeting mid-size components.The process optimisation to achieve high mechanical properties by combination of sprayforming, extrusion and heat treatment of AlSi25Fe4Ni3CuMgMnCrTi.Various microstructural analyses, mechanical tests, and powder controls were performed in order to define the process parameters enabling industrial and cost-efficient production of these alloys.
DOI:
https://doi.org/10.59499/EP256764899
