Register to Watch the Recording:

One sentence to prompt person to register for the webinar.


Webinar On-Demand:

Powder Evolution and its Impact on Additive Manufacturing Production

Understanding the powder evolution with reuse in AM

As the manufacturing landscape for powder bed AM shifts from R&D and prototyping to serial production, more focus is being placed on the reuse of powder. However, metal powder is not infinitely reusable, and there have already been a number of investigations which demonstrate that powder will evolve with repeated reuse. In this webinar we discuss the mechanisms which drive powder evolution and present results from some of LPW’s own powder evolution investigations. Finally we review the range of work conducted on powder evolution by other investigators and summarise how powder evolution differs across materials and platforms.

In collaboration with



  • Mechanisms which drive powder evolution
  • Results from 718 evolution study
  • Introduction of new metric for powder evolution
  • Impact of chemistry variance in virgin powder
  • Factors effective powder evolution
  • Observed defects in powder
  • Review of powder evolution studies


Small header

General one-column text area. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Orion's sword, realm of the galaxies tesseract extraordinary claims require extraordinary evidence colonies, realm of the galaxies globular star cluster, vanquish the impossible of brilliant syntheses intelligent beings at the edge of forever decipherment rings.

  • Bullet 1
  • Bullet 2
Callout Box

Your Speakers:

Dr. Neil Harrison

Materials Development Manager, LPW

Bio: Dr. Neil Harrison uses his knowledge of the behaviors of alloys and materials on LPBF systems to provide technical and consultation services.  His expertise in metal additive manufacturing includes the development and design of alloys and powders optimized for laser powder bed fusion (LPBF), and spans both research and practical implementation. Neil's PhD at the University of Sheffield was on solidification, microstructure and material response of nickel superalloys processed by Laser Powder Bed Fusion (LPBF).  He has published works on microstructure and solidification theory in LPBF, and reduction of microcracking in nickel superalloys.

Dr. Khalid Rafi

AM Lead Development Engineer, UL LLC

Bio:  Joining UL in 2015, Dr. Khalid Rafi is responsible for the development of AM materials validation and process validation programs at UL’s Global AM Center of Excellence in Singapore. Leveraging his 14 years of experience in teaching and research, Rafi is also engaged in the development and delivery of UL’s AM training program. Rafi holds a Masters and PhD in Materials and Metallurgical Engineering from the Indian Institute of Technology, Madras, India and has earned a post-doctoral fellowship from the University of Louisville, Kentucky, USA and Nanyang Technological University, Singapore.