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Developing Automotive-Grade Metal Alloys for Additive Manufacturing

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The adoption of metal additive technologies into the automotive market depends substantially on the development, understanding, and the wide availability of metal alloys and their associated properties that meet the needs specific to automotive applications. Often these needs are unique, and cannot be met by simply copying the alloys and processes used to meet the aerospace and medical needs where metal additive has seen recent growth. This talk will examine the work being done in developing automotive-grade alloys suitable for powder bed fusion within General Motors R&D, with a view to how these types of alloys can help expand the automotive market for metal additive manufacturing. The development of alloys that reduce the cost of the process is critical, and while that may include avoiding expensive alloying elements, the alloys must be designed to allow for rapid deposition, minimal heat treatment and postprocessing, and compatibility with joining or other secondary processes. 

Learning Objectives:

  • Understand how automotive alloy and processing needs differ from the existing available alloys, and what features might be more beneficial.
  • See the progress that GM has made to understand two example systems that may be of automotive interest.