Internship - Ductility of Aluminium - Copper - Lithium alloys for lower wings H/F/X



France, Auvergne-Rhône-Alpes, Voreppe

Remote Position: 


September 11th, 2023



Constellium is a world leader in the development and manufacture of high value-added aluminum products and solutions for a wide range of markets and applications, focusing in particular on aerospace, automotive and packaging. Constellium also has nearly 12,000 employees worldwide.


We are committed to minimizing the environmental impact of our operations and improving the environmental footprint of aluminum throughout the value chain.


In our company, safety is essential, it is one of our core values. Our Research and Technology Center, C-TEC Constellium Technology Center, employs about 240 people. Our research is mainly in the field of casting, aluminum transformation and surface treatment.


By joining our company, you will discover a multicultural company which is committed to diversity and the well-being of its employees.


Intership's topic: «Ductility of Aluminium – Copper – Lithium alloys for lower wings »


The internship takes place in the context of the development of Al-Cu-Li alloys for the aerospace industry and the effort to understand the relationships between the fabrication process parameters, the microstructures, and the mechanical properties. More specifically, the objective is to understand the influence of the microstructure and texture of a lower wing plate on its elongation to fracture in longitudinal and transverse directions.


1 – Analysis of the constitutive behavior:


  • Analysis of the available results on Al-Cu-Li alloys regarding the elongation anisotropy
  • Tensile tests at different strain rates for different tempers
  • Analysis of the strain hardening
  • Modeling, possibly using a crystal plasticity model


2 – Analysis of the fracture modes:


  • Tests on double-notch specimens to observe failure mechanisms
  • Fractography
  • In situ tensile tests in a Scannig Electron Microscope



These trials and analyses will be performed on products having different textures, and subjected to different aging treatments.


The role of the trainee will be to define relevant tests, to launch these tests and to perform the tests in collaboration with lab specialists on the sophisticated instruments.


The trainee will integrate the Metallurgy team and will be supervised by two engineers working dor the development of Al-Cu-Li alloys.






Education level: Master degree preparation or engineering school

Mechanical or Materials engineering


Competencies & technical & soft skills requirement:


  • Basics : Metallurgy
  • Autonomy and team work orientation
  • Interest for experiments and observations
  • Ability for writing and presentating
  • Some French langage knowledge, even very basic, appreciated