Surface modification of Ti-6Al-4V powder during recycling in EBM process
Paper i proceeding, 2020

Surface and Interface Analysis published by John Wiley & Sons Ltd Electron beam melting is an additive manufacturing technology in vacuum that suits Ti-6Al-4V parts, which has a high affinity with oxygen. Since the high cost of the feedstock powder, the un-melted powder is often recycled in the subsequent process. In this study, the influence of powder reuse on the surface characteristics of Ti-6Al-4V powder is examined using a variety of technology including scanning electron microscopy, X-ray photoelectron spectroscopy, and Auger electron spectroscopy. The modification of surface morphology and chemistry either generally or locally are revealed and discussed, which helps the creation of powder recycling strategy. Compared with fresh virgin powder, “worn” and rougher powder particles are observed after recycling. Meanwhile, the average oxide thickness is slightly increased, and less Al enrichment was found at the surface. Locally varied chemistry/oxide thickness on different powder particles or different location on the same particle is observed.

AES

Ti-6Al-4V

XPS

electron beam melting (EBM)

recycling

Författare

Yu Cao

Chalmers, Industri- och materialvetenskap, Material och tillverkning

Mats Delin

GKN Aerospace Sweden

Fredrik Kullenberg

GKN Aerospace Sweden

Lars Nyborg

Chalmers, Industri- och materialvetenskap, Material och tillverkning

Surface and Interface Analysis

0142-2421 (ISSN) 1096-9918 (eISSN)

Vol. 52 12 1066-1070

ECASIA 2019 - 18TH EUROPEAN CONFERENCE ON APPLICATIONS OF SURFACE AND INTERFACE ANALYSIS
Dresden, Germany,

Ämneskategorier

Keramteknik

Materialkemi

Medicinska material och protesteknik

DOI

10.1002/sia.6847

Mer information

Senast uppdaterat

2021-07-09